JPH02214829A - Information or mode setting device for camera - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improving the operability of a camera equipped with a manual exposure mode or an auto-bracketing function.

[Conventional technology]

In the past, it was common for eye reflex cameras to have a shutter dial on the body side and an aperture ring on the interchangeable lens side, but with recent camera automation and electronic technology, the aperture dial has been placed on the camera body side. The mainstream is to have a setting member and centralize automatic exposure input and control on the body side, and the aperture ring on the lens side is becoming obsolete, partly to reduce costs. This kind of camera has an electronic dial or up/down dial on the camera body.
It is configured to be equipped with keys to set the shutter speed and aperture value, but since AE photography is the mainstream, these electronic dials or close-up controls are used to set manual exposure.
Having two sets of down keys (one for shutter speed and one for aperture value) on the camera body is not desirable due to cost and layout considerations, and instead of having one set of electronic dials or up/down keys, manual exposure is required. In mode, the shutter speed can be set by operating only the electronic dial or up/down keys, and the shutter speed can be set by operating the electronic dial or up/down keys together with another operating member (for example, by pressing a switch consisting of The aperture value can be set by rotating the dial while holding the camera.

Furthermore, cameras are already known that have a so-called auto-bracketing function, in which a plurality of photos are taken while automatically shifting the exposure. Conventionally, in this type of camera, for example, in auto bracket shooting in shutter priority mode, the shutter speed is fixed and bracket shooting is performed while changing the aperture value, and in auto bracket shooting in aperture priority mode, the aperture value is fixed. Bracket photography is performed while changing the shutter speed.

In auto bracket photography in manual exposure mode, either the shutter speed or the aperture value is fixed, and the other is changed.

[Problem that the invention is trying to solve] However,
In the conventional example above, the operability when setting manual exposure information is such that the photographer who shoots with manual exposure prioritizes the aperture value based on his or her preferences and the nature of the subject, and fine adjustments to the exposure level are made by adjusting the shutter speed. It is relatively easy to use for those who prefer to change the shutter speed, but for those who preferentially determine the shutter speed and make fine adjustments to the exposure level by changing the aperture value. There is a drawback that the second operating member is forced to be used in combination, making it inconvenient to use.

Also, when shooting with auto bracketing for manual exposure, use the above method (
Generally, there are cameras that only have a shooting mode that fixes the aperture value and changes the shutter speed, or conversely, those that only have a shooting mode that fixes the shutter speed and changes the aperture value, depending on the photographer's preference. It was not possible to change either the aperture or the shutter speed.

[Means for solving problems]

The present invention has been made in view of the above-mentioned matters, and includes a third operating member for switching functions in the manual exposure mode on the camera, and the user can set the manual exposure mode in advance by operating the third operating member. You can set the shutter speed by operating the first operating member depending on your preference or the nature of the subject to be photographed, and you can adjust the aperture value by operating the first operating member and the second operating member. In the first mode, the aperture value can be set by operating the first operating member, and the shutter speed can be set by operating the first operating member and the second operating member. This eliminates the drawbacks of the conventional example by making it possible to switch to a second mode that can be set.

Furthermore, the present invention has an operating member for switching functions in the manual exposure mode on the camera, and by the user operating the operating member, the auto-bracketing function during manual exposure can be changed in advance by changing the shutter speed while fixing the aperture value. By making it possible to select whether the shutter speed is fixed or the aperture value is changed, the above-mentioned drawbacks of conventional cameras are eliminated.

〔Example〕

FIG. 1 shows the electric circuit configuration of one embodiment of the present invention, and the second
The flowcharts are shown in FIG. 3, FIG. 4, and FIG.

Further, FIG. 5 shows the arrangement of each operating member when the camera incorporating the device embodying the embodiment shown in FIG. 1 is viewed from the front, and FIG. 6 shows the arrangement of each operating member when viewed from above. FIG. 7 shows the arrangement of each operating member when viewed from the back side.

In Figures 5 to 7, l is the release button and 2 is the continuous shooting (
The operating lever 3 for selecting the shooting mode of C) or single shooting (S) is the operating lever for selecting the self-timer, and the operating lever 4 is for shutter priority (Tv), aperture priority (Av), or manual (M). ), and 5 is the shutter speed, aperture value, or exposure step number information during auto bracket shooting (for example, 0
．． For example, a so-called electronic dial with a brush and a 2-bit conductive pattern with a phase difference of 90 degrees is used to set information for each 5-stage or 1-stage.
w M normally functions as a switch for setting the aperture value,
In the manual exposure mode, the aperture value can be changed by pressing the switch SWM and operating the dial 5. However, in the camera according to the present application, this s
w Change the function of M and use s in manual exposure mode.
It is possible to change the shutter speed by pressing wM and operating the dial 5. More details will be given later. 6 is a switch lid of a storage section 7 that stores switches that are rarely used; swAEB is a switch lid of the storage section 7;
Auto bracket switch housed in swME
are the same (the multiplex shooting switch stored in the storage section 7).

swCOMP is an exposure compensation setting switch, and when setting exposure compensation, the exposure compensation value can be set or changed by operating the dial 5 while pressing the switch swCOMP. s w M
N is an operation member that allows the user to change the functions and operability of the camera in manual mode according to the user's preference.

The method of operating this switch and the changes to the functions and operability of the camera will be described later.

Next, FIG. 1 will be explained.

FIG. 1 shows a specific example of an electric circuit in which a microcomputer COM is used to control a series of operations.

The light-receiving element SPC receives reflected light from the subject and outputs a light-receiving signal to a high input impedance operational amplifier OPI whose feedback circuit is connected to a compression diode D1. Operational amplifier OPI outputs logarithmically compressed object brightness information Bv via resistor R1. A variable resistor vR1 connected to the constant voltage source VGI outputs film sensitivity information Sv. An operational amplifier OP2, whose feedback circuit is connected to a resistor R2, calculates and outputs photometric information Ev=(Bv+Sv). The photometric information Ev is converted into a 4-bit digital value by an A/D converter ADC, and is input to input ports PGO to PG3 of the microcomputer COM.

When the dial 5 is operated, a number corresponding to the number of clicks is counted by the dial interface circuit DIF, and the value is converted into 4-bit information and input to the input ports PHO to PH3 of the microcomputer COM. . The information in the dial interface circuit DIF is such that the pulse signal is sent to the output port P of the microcomputer COM.
It is reset by input from E3. Depending on which mode is selected by the exposure mode selection knob 4, two exposure mode switches swSEL are turned on and off, and 2-bit information corresponding to the selected exposure mode is sent to the input port of the microcomputer COM. PP0-
Input to PPI.

When the battery BAT is loaded into the camera, the microcomputer COM and display system decoders TD and AD are activated.

FD CD and dial interface circuit DI
A power supply Vbat is supplied to F and the like. Also, the release button 1
When the first stroke switch swl connected to the input port PAO is turned on by the first stroke of The voltage of the operational amplifier OPI for photometry is set as the power supply Vcc.

OP2 is supplied to circuits that consume less power.

Microcomputer COM input port PAL~13
There is a second stroke switch s w 2 that is turned on by the second stroke of the release button 1, and a mirror up switch s that is turned off when the mirror is up and turned on when the mirror is down.
w M RU P , charge completion detection switch 5WCGE that turns on when mechanical charging is completed
% A film switch swFLM that is turned on each time the feeding of one frame of film is completed, a trailing curtain switch 5wCN2 that is turned on when the trailing curtain has completed running, and a film switch 5wCN2 that is turned on when the self-timer is set by the operation lever 3. a self-switch 5w5ELF, a switch 5WC that is turned on when, for example, quick-shot mode is selected by the operation lever 5, and turned off when single-shot mode is selected;
81 the aperture value setting switch s w M-, the switch 5w5ET which is off when the switch lid 6 is closed and turned on when it is opened, and the multiplex shooting switch s
w M E , the auto bracket switch swAE
B, the exposure compensation setting switch s w COM P and the manual function change switch s w MN are connected, respectively.

The bases of transistors TR0-TR2 are connected to the output ports PE0-PE2 via resistors RIO-12, and the transistors TRO-TR2 are connected to the first clamping magnet MG.
O, controls the energization of the leading curtain magnet MCI that makes the leading curtain run, and the trailing curtain magnet MG2 that makes the trailing curtain run, respectively. Also, resistors R are connected to output ports PD, PC, and PB.
The bases of transistors TR3 to 5 are connected through transistors 13 to 15, and transistor TR3 is connected to charging motor MD.
The transistor TR4 controls the drive of the rewind motor MC, and the transistor TR5 controls the drive of the winding motor MD which winds the film at high speed.

From the output port PTD, the contents of the shutter time information register RGTv in the microcomputer C0M are output to the decoder TD, and the decoder TD converts the contents into a signal for displaying the shutter time. The signal is output to the displayed display 5EGI.

Output ports PFL and PAEB output signals of "1" (meaning high level) or "0" (meaning low level) to decoder AD, and decoder AD receives a signal of "1" from output port PFL. If input, a signal for displaying a blinking bracket mark on the connected display 5EG2, which is composed of a liquid crystal or the like, is output. Output port P
If a signal of “1” is input from AEB, display 5
Outputs a signal for displaying the auto bracket mark to EG2.

A signal of "1" or '0'° is output from the output port PME to the display 5EG4, which is made up of a liquid crystal, etc.
EG4 displays a multiple shooting mark when a signal of "1" is input.

From the output port PFD, the microcomputer C0M
The contents of the aperture value information register RGAv or the contents of the multiplex number information register RGME are output to the decoder FD, and from the output port PBD, the contents of the AEB step display register RGAEBD are also sent to the decoder FD and decoder CD. is output. - On the other hand, the contents of the exposure correction value display register PGCOMPD in the microcomputer C0M are outputted from the output port PCD to the decoder CD. The decoder FD outputs a signal for numerical display corresponding to each of the above contents to the connected display 5EG5, which is made up of a liquid crystal, etc., while the decoder CD outputs a signal for displaying numerical values corresponding to each of the above contents to the connected display 5EG6, which is made up of a liquid crystal, etc. Outputs a signal for bar graph display corresponding to the content.

From the output port PAV, the contents of the aperture value information register RGAv in the microcomputer C0M are output to the aperture control drive circuit DAV. The aperture control drive circuit DAV outputs information converted into actual aperture information to a connected driving actuator CAV, such as a stepping motor, and drives this to perform appropriate aperture control.

Note that the microcomputer COM has a built-in rewritable nonvolatile memory EEPROM.

Next, the operation of the microcomputer COM is shown in Figures 2 to 4.
This will be explained using the flowchart shown in the figure.

When the battery BAT is loaded into the camera and the power supply Vbat is generated, the microcomputer COM starts the operation from the start of the flowchart shown in FIG.

[Step 1] Suppose the photographer only makes the first stroke of the release button l, and the first stroke switch s
When the wl on signal is input to the input J port PAO,
Proceed to step 2.

“Step 2” Output a “1” signal from the output port PF, turn on the transistor TRbat, and connect the power supply Vcc.
is supplied to each part. Next, a photometry timer is started. The photometry timer is used to continuously supply power Vcc for a predetermined period of time from the input of the off signal to the first stroke switch swl.
Even if you take your hand off the button, you can check the photometry status for a predetermined period of time, and use the exposure mode selection knob 4 to change the predetermined information while looking at the display. Note that this configuration can be easily implemented using a hardware timer built into the microcomputer COM.

[Step 15] Transfer the contents of the shutter speed information stack register RGTvS to the shutter speed information register RGTv and the aperture value information stack register RGAv.
The contents of S are respectively stored in the aperture value information register RGAv. This is to restore the shutter speed or aperture value stored in the register RGTv or RGAv to the original setting value when auto bracket photography is performed in manual mode.

[Step 3] The photometric information Ev converted into a 4-bit digital value by the A/D converter ADC is stored in the internal register RGEv, and the process proceeds to Step 16.

[Step 16] Add the exposure correction information of the digital value stored in the register RGCOMP to the photometry information Ev stored in the register RGEv, and store the result in the register RGEv as new photometry information Ev including the exposure correction information. . For inputting exposure compensation information, please refer to Step 1.
64 to 166 will be described in detail later.

Next, proceed to step 4.

[Step 4] It is determined whether the shutter priority mode is set based on the input states of the input ports PPO and PPI. If the shutter priority mode is currently set, proceed to step 5.

[Step 5] Subtract the contents of the shutter information register RGTv, which stores the information set by operating the dial 5, from the contents of the register RGEv, and store the result (aperture information Av) in the aperture information register RGAv. let It is assumed that the contents of all registers in the microcomputer C0M are held while the battery FAT is loaded. Further, when the battery BAT is loaded for the first time, it is assumed that a frequently used value, for example, information such as 1/125 seconds is initially set.

[Step 6] The contents of the register RGAEB that stores the auto bracketing exposure step number information are stored in the aperture bracketing step number register RGBAv.

Also, the contents of the register RGBTv for the number of bracket stages of the shutter are set to zero (0).

[Step 7] Determine the state of flag FAEB indicating whether auto bracketing mode is set. Assuming that auto bracketing mode is not currently set, proceed to step 8.

[Step 8: Determine the state of flag FME indicating whether multiple shooting mode is set. Assuming that the multiple shooting mode is not currently set, the process advances to step 9.

[Step 9] Auto bracket switch swAEB
A flag FsAB indicating whether or not has been operated is set to 0. Further, a flag FsME indicating whether the multiplex photographing switch swME has been operated is reset to 0.

[Step 10] The contents of the aperture information register RGAv are output from the output port PFD, and the contents of the shutter information register RGTv are output from the output port PTD. As a result, the aperture value calculated by the calculation is displayed on the display 5EG5, and the set shutter time is displayed on the display 5EGI. Proceed to step 160.

[Step 160] Exposure compensation value display register RG
The contents of COMPD are output from the output port PCD, and the contents of the auto bracket stage number display register RGAEBD are output from the output ports I) BD. Incidentally, if the microcomputer COM has just been loaded with the battery BAT, RGCOMP, RGAEB, RGCOMPD.

It is assumed that the registers RGAEBD and RGAEBN are initially set to all 0s, and there are no settings for auto bracketing or exposure compensation.

Decoder C by the output of output ports PCD and PBD
D outputs an output corresponding to the exposure compensation value and auto bracketing step value and displays 5EG6, but here decoder C
The operation of D will be explained. Figure 8(a) shows decoder C
This figure shows the basic configuration of the display device 5EG6 and the decoder CD, and the part surrounded by a broken line in the figure is a decoder CD, and the inside is made up of a data converter DEC and segment drivers DRO to DR16. The data converter DEC is equipped with a data input terminal that receives data from the output ports PCD and PBD of the microcomputer COM.
Here, as an example, we will use data representing the number of exposure compensation steps and AE
The data representing the number of B setting steps are expressed as 5-bit and 3-bit data as shown in FIG. 8(b) and FIG. 8(C), respectively, and the output port PCD is used to output the exposure compensation display data. There are a total of 8 data input terminals, 5 data input terminals CO to C4 as data input terminals that receive data from the AEB step display, and 3 data input terminals AO to A2 that receive data from the output port PBD that outputs AEB step display data. be. The display data converted according to the data input to the data input terminals Co-C4 and AO-A2 in the DEC is sent to the data output terminals DO to D1.
DRO, which is a display segment driver, outputs to
~DR16 respectively, and the drivers DRO~D
R16 is each segment 5EG600 to 5E in 5EG6
Each G616 is driven independently to perform display. Here, the segment corresponding to the terminal that outputs "H" level among DO to D16, for example, if DO is "H", 5
If EG600 and D8 are "H", 5EG608 lights up. The data conversion unit DEC can be configured, for example, by an AND-OR decoder as shown in FIG.
When =AI=AOO, only the D8 output becomes “H”,
Each output of Do-D7 and D9 to D16 becomes "L'', and C4=C3C2=1.C1=C0=O (the number of exposure compensation steps is -2,0) and A2=1.AI=AO=O (AEB
If the step is 2.0), Do, D4. Three outputs of D8 become "H" and the other outputs become "L".

Returning to the explanation of step 160, here it is assumed that there is no AEB setting and no exposure compensation setting, so RGAEBD=000. Since RGCOMPD=00000 and this value is output to the output ports PBD and PCD, the inputs A2 to AO, C of the data converter DEC
4 to CO are all 0, so DEC sets driver DR8 to 5EG608 in order to set only D8 output to “H”.
The other segments are turned off and the display 5 is turned on.
EG6 enters the display state shown in FIG. 10(a), indicating that if photography is continued as is, photography will be performed without exposure compensation.

[Step 161] Put the contents of register RGAEB into register RGAEBD. This step has meaning when auto-bracket photography is being performed, but if auto-bracketing is not set, the contents of both registers are 000, so this step has no particular meaning.

[Step 162] Check whether the content of the auto-bracketing shooting number register RGAEBN is 3.

Since there is no auto bracket setting here, RGAEBN
Since the answer is O, the process advances to step 163.

[Step 163] Check whether the contents of the register RGAEBN are 0. Here, since RGAEBN=O as described above, the process advances to step 164.

In addition, register RGAEBN is set during auto bracket shooting.
If the content of is 2 or 1, the program proceeds to step 94 without going through the exposure compensation value change program in steps 164 to 167, but this may confuse the photographer if the exposure compensation value is changed during auto bracket shooting. This is because there is a possibility that it will happen.

[Step 164] The level of the input capo-PA12 is read and it is determined whether the exposure compensation setting switch swCOMP is on. Here s w COM
If P is on, the process proceeds to step 165; if it is off, the process proceeds to step 94.

The operation in the case where s w COMP is on and the process advances to step 165 will be described below.

[Step 165] Here, an information reading routine associated with the operation of the dial 5 is executed. Here, the information reading routine accompanying the dial operation will be explained with reference to FIG.

"Information reading routine" [Step 80] The information input to the input ports PH0-PH3 is stored in the dial register RGH.

At this time, the register RGH stores a numerical value corresponding to the number of clicks on the dial 5 and information as to whether the numerical value is positive or negative depending on the direction of rotation of the dial 5. That is, 4-bit information indicating how many steps to shift up or down from the current information is stored.

[Step 81] Output a pulse signal from output port PE3. As a result, the value of the dial interface circuit DIF is reset to zero.

[Step 82] Return to the original step.

Returning again to the flowchart in FIG.

[Step 166] Exposure compensation value storage register RG
The value set by the dial operation (contents of register RGH) is added to COMP and stored in RGCOMP, which becomes a new exposure correction value. In addition, in this embodiment, RGCOMP
The data length is 5 bits, and the data length of RGH is 4 bits, but the addition can be performed without problems by adding O to the upper 4 bits of RGH to make 5 bit data.

The same applies to operations between registers having different bit lengths.

[Step 167] Dewdrop correction value storage register RG
The contents of COMP are stored in register RGCOM for displaying exposure compensation value.
The data is stored in the PD and the program returns to 5TART.

If data 0001 is stored in RGI (in step 165), RGCOMP=00001 in step 166, and RGCOMPD=00001 in step 167.This means that the exposure compensation value +0.5 has been set (8th Figure (b)),
The program returned to 5TART is executed again by going through the steps described above, and in step 160 register RGC is
When the contents of OMPD are output to the output capo PCD, only the D9 output of the decoder CD becomes "H" level in the data converter DEC, and the driver DR9 switches to segment 60.
In order to light up 9, the display state of 5EG6 is as shown in Figure 10 (
The value shown in b) indicates that an exposure compensator of 0.5 steps has been set.

If s w COMP is off at step 164, the process advances to step 94.

[Step 94] Check the contents of flag FAEB indicating whether autobracketing mode is set. Up to this point, we have assumed that the autobracketing mode is not set, so it is FAEBO, and in this case, proceed to step 11.

[Step 11] The second stroke of the release button 1 is performed, and it is determined whether the on signal of the second stroke switch sw2 is input to the input port FAI.

Assuming that the on signal of the golden brother 2-stroke switch s w 2 is not input, the process returns to the start.

Also, while the ON signal of the first stroke switch s w 1 is being input, this routine records the subject brightness information,
Calculation information can be obtained from film sensitivity information and setting information, and this information can be displayed.

Further, if the aperture priority mode is set, the process proceeds from step 4 to step 12-1 to step 13.

[Step 13] From the contents of register RGEv, subtract the contents of register RGAv, which stores information set by operating dial 5 and aperture value setting switch swM, and store the result in shutter information register RG.
Store it on TV. Note that when the battery BAT is loaded for the first time, a frequently used value, for example, information such as F5.6 is initially set.

[Step 14] The contents of the bracket step number register RGAEB, which stores the exposure step number information of auto bracketing, are transferred to the shutter bracket step number register RGBTv.
to be memorized. Also, register RG for the number of aperture bracket stages.
Clear the contents of BAv to zero.

Thereafter, in the aperture priority mode, the same sequence as in the shutter priority mode is performed, and the aperture value set in step 10 is displayed on the display 5EG5, and the shutter time calculated by calculation is displayed on the display 5EGI. Is displayed.

Also, if manual exposure mode is set, step 4 → step 12 → step 17 → step 18
Proceed to.

[Step 17] Set the manual function setting bit stored in the EEPROM to the manual function setting flag FMN.
Load into. This camera according to this embodiment has the flag F.
When MN is set to 0'', the function and operability in manual exposure mode is to first perform AEB photography by fixing the aperture value at the set value and performing stepwise exposure by varying the shutter speed. Also, if you operate only dial 5 when setting manual exposure, the shutter speed will be changed, and if you operate dial 5 while turning on swM, the shutter speed will change.
When operated, the aperture value is changed. This will be referred to as manual mode 1. On the other hand, if the flag FMN is set to "1", the functions and operability in manual exposure mode are such that when AEB photography is performed, the shutter speed is fixed at the set value and the aperture value is shifted. If you operate only dial 5 when setting manual exposure, the aperture value will be changed.
When you operate , the shutter speed is changed. This will be referred to as manual mode 2. Hereinafter, a description of this embodiment will be continued in which the switching of the functions and operability described above using the flag FMH can be realized. Furthermore, the flag FMN
Setting and switching will be described in steps 170 to 187.

[Step 18] Determine the contents of the manual setting flag FMN, and if it is "0", proceed to step 14,
From then on, the same sequence as in the aperture priority mode is followed, and the aperture value set in step 10 is displayed on the display 5EG5.
The set shutter seconds and times are displayed on the display 5EG1. On the other hand, the content of the flag FMN is “l”
If so, proceed to step 6, and thereafter proceed with the same sequence as in the shutter priority mode, and the aperture value set in step lO is displayed on the display 5EG5, and the set shutter time is displayed on the display 5EG1. be done. The above describes the operation when swl is turned on and the metering timer starts, but the exposure compensation setting switch s
Even if wCOM P is pressed, photometry and display are performed through the same sequence. That is, if it is determined in step l that swl is off, the process advances to step 19.

[Step 19] The level of the input port PA12 is input and it is determined whether the exposure compensation setting switch swCOMP is on or off. If the switch is on, the program advances to step 2 and proceeds to the photometry/calculation/display routine described above, and this camera also uses the shutter speed based on the photometry value even when the exposure compensation setting member is operated. and aperture value are displayed.

Furthermore, as described above, in steps 164 to 167 among these steps, it is possible to receive an input for changing the exposure correction value by operating the dial 5 and to display the change.

Next, setting and changing of the manual function setting flag FMN by operating sWMN and the dial 5 will be described.

During the above sequence, the pressing of the release button 1 (first stroke) is stopped, and the exposure compensation operation member s w C
If the OM P input is also turned off, the program goes to step 1.
→ Step 19 → Step 170.

[Step 170] Read the level of input port PA13 and change the manual mode function change switch s w M
Determine whether N is turned on. The switch s
If it is determined that wMN is on, the program advances to the manual function change routine at step 171.
becomes.

[Step 171] Output ports PTD, PFL, P
A.E.B.

Turn off the output of PME, PFD, PBD, and PCD to turn off all displays. Next, the contents of the shutter time storage register RgTV are temporarily saved in the shutter time stack register RGTvS. This is because data other than the shutter time information will be stored and used in the shutter time storage register RGTv in a later step to display a confirmation display when setting or changing the manual function.

[Step 172] Set the manual function setting bit stored in the EEPROM to the manual function setting flag FM.
Read into N. The function of this flag is as described above in step 17.

[Step 173] It is determined whether the content of the manual function setting flag FMN is "0" or "1".

If the content of the flag FMN is 0, it means that the manual mode 1 mentioned above has been set, and the program proceeds to step 174. On the other hand, if the content of the flag FMN is "1°", the above-mentioned manual mode 2 is set, and the program proceeds to step 177.
Proceed to.

[Step 174] Manual function change register R
Store data oooo in GMN. Here, since the data from the DIF connected to the dial 5 is 4 bits, RGMN is set to 4 bits along with the bit length, but RGMN does not necessarily have to be 4 bits.

[Step 175] Shutter second time storage register R
Using 7 segments of display 5EG1 for GTv, fH
Store data that is displayed as 11. As for what kind of data is actually stored, various forms can be considered depending on the configuration of the display SEG 1 and the decoder TD.
It would be redundant to discuss their configuration here, so I will not mention it.

The program then proceeds to step 176, but before that, the case where the content of the manual function setting flag FMN is determined to be "1" in step 173 will be described. In this case, step 173 → step 177 → step 178 →
Proceed to step 176.

[Step 177] Manual function change register R
Store data 0001 in GMN.

[Step 178 Shutter second time memory register R
Using the 7 segments of display 5EG1 on GTv, ", 1
Stores data that is displayed as I+.

The program continues step 1 as from step 175.
Proceed to 76.

[Step 176] Shutter second time storage register R
Output the contents of GTv to output port PTD. Therefore, if the content of the manual function setting flag FMH is set to "0" as a result of steps 170 to 178 above, ", ft 11" is displayed on 5EGI in this step, and the currently set manual function is displayed. is displayed to mean that it is in manual mode l.

Conversely, if the content of the flag FMN is set to "1", "I" is displayed on 5EGI in this step, indicating that the currently set manual function is manual mode 2. The meaning will be displayed.

[Step 179] Read the level of input port PA13 and change the manual mode function change switch s w M
Determine whether N continues to be turned on. here,
The process proceeds to step 181 assuming that the switch s w M N continues to be turned on.

[Step 181] An information reading routine associated with the operation of the dial 5 is executed. The details of the information reading routine are as described in the explanation of step 165.

[Step 182 Command function change register R
The contents of the register RGH, which stores the value set by the dial operation, are added to GMN, and the result is stored in the manual function change register RGMN.

[Step 183] The contents of the register RGMN are ANDed with the binary data 0001, and the result is stored in the register RGMH. Therefore, the contents of register RGMN are the value obtained in step 182, and the upper three bits are unconditionally oo.

Therefore, only the least significant bit is used as is, and becomes the value before performing the AND operation. That is, at this stage, the contents of the register RGMN are either "oooo" or "0001".

[Step 184] The contents of the register RGMH are “
o o o o” or other (i.e. “
0001''').

[Step 185] and [Step 186] In the above step 184, the contents of the register RGMH are “oo
oo"", the contents of the manual function setting flag FMN are reset to "0". Conversely, if the content of register RGMN is "0001", the content of the flag FMN is set to "1".
”.

[Step 187] Step 185 or Step 1
At 86, the contents of the manual function setting flag FMN, which has a new value, are stored in the non-volatile memory EEPROM.

Here, the program returns to step 173 again, so in accordance with the content of the flag FMN, which has become a new value according to the above explanation, in step 176, "U" is displayed on the display 5EGl.
” or “I” is displayed. For example, EEP
Assuming that the content of the manual function setting bit stored in the ROM is "0", FMN=0, so in step 176, ", n I+" is displayed on the display 5EGI, indicating that manual mode 1 is in effect. If the camera user operates the dial 5 by one force count while turning on s w M N, then in step 182 RGMN will be 0000+0001 =
Since it becomes OO01, step 183 → 184 → 186
Then, the content of the flag FMN becomes "1'°" and is stored in the EEPROM in step 187, and then the process proceeds again in steps 173 -> 177 -> 178 -> 176, and "I" is displayed on the display 5EGI. is displayed to indicate that the mode has been switched to manual mode 2.

If the s w M N is turned off while these steps 170 to 187 are being executed, this is detected in step 179 and the process proceeds to step 180.

[Step 180] Shutter second time memory disc R
Register RGTvS for shutter time stack in GTv
Stores the contents of. As a result, the shutter time information stored in the register RGTv before step 171 is returned to RGTv. After this, the program exits the manual function change routine and returns to the start.

Next, we will describe information setting by dial operation while the photometry timer is operating. When the press of the release button 1 (first stroke) is stopped during the above-mentioned sequence, the off signal of the first stroke switch swl is inputted, and the exposure compensation setting switch sw COM P and the manual function change switch are inputted. If it is determined that the input of s w M N is stopped and all of them are off, the program proceeds in the order of step 1 -> step 19 -> step 170 -> step 20.

[Step 20] It is determined from the state of the switch 5w5ET whether or not the switch cover 6 has been opened. Assuming that the switch lid 6 remains closed, the input port PA
Since the off signal of switch 5w5ET is input to 9,
Proceed to step 21.

[Step 21] It is determined whether the photometry timer is in operation. Since this is immediately after the photometry timer has been activated in step 2, the process advances to step 22.

[Step 22] It is determined whether the shutter priority mode is set based on the input states of the input ports PPO and PPI. If the shutter priority mode is currently set, the process advances to step 23.

[Step 23] The information reading routine associated with the operation of the dial 5 described above is executed.

[Step 24: Add the numerical value set by the dial operation (contents of register RGH) and shutter information (contents of register RGTv), and store it again in the shutter information register RGTv. Also, the contents of the shutter information register RGTv are stored in the register RGTvS.

[Step 25] It is determined whether a certain code indicating a bulb mode located next to the longest shutter speed is stored in the register RGTvS. If it is not the valve mode now, jump to NEXTI, that is, step 15.

In this way, during the photometry timer after the press of the release button 1 (first stroke) is stopped, the setting information can be changed by operating the dial 5, and then the routine from step 15 described above is executed. By doing so, the aperture value and shutter speed are displayed on the display 5EGI in step 10.
, 5EG5, respectively.

Further, if the aperture priority mode is set, the process proceeds to step 22 -> step 26 -> step 27.

[Step 27] Similar to step 23, here, an information reading routine associated with the operation of the dial 5 is executed.

[Step 28] The numerical value set by the dial operation (the contents of register RGH) and the aperture value information (the contents of register RGH) are
GAv contents) and register R for aperture information again.
Store it in GAv. Also, the aperture information register RGAv
The contents of are also stored in the register RGAvS. Also, in the case of aperture priority mode, jump to NEXTI, that is, step 3, and display the aperture value and shutter speed on the display 5EG in step 10, as in the shutter speed priority mode.
It can be displayed on I, 5EG5, respectively.

If the manual exposure mode is set, the process goes from step 22 to step 26 to step 35.

[Step 35] Set the manual function setting bit stored in the EEPROM to the manual function setting flag FM.
Load into H.

[Step 36] The content of the flag FMN is “0”
or "'l". If the content of this flag is “0°゛,” the manual function is in manual mode l.
, and the process advances to step 37. Conversely, if the content of the flag FMN is "1", it means that the manual function is set to manual mode 2, as described above, and the process proceeds to step 38.

[Step 37] As described above, proceeding to this step is in manual mode I.

In this case, the manual aperture value setting switch swM functions as it is for changing the manual aperture, so in this step, it is determined whether the step swM is on or off, and if it is on, the aperture value cannot be changed by dial operation. In order to enable this, the process advances to step 27, and thereafter a routine similar to that in the aperture priority mode is executed. On the other hand, if the switch swM is turned off, the process proceeds to step 23 to enable the shutter speed to be changed by dial operation, and thereafter the same routine as in the shutter priority mode is executed.

[Step 38] As mentioned in the explanation of step 36, the case where the process advances to this step is in manual mode 2. In this case, the switch swM for setting the manual aperture value is used to change the manual shutter speed, contrary to the case of manual mode 1, so in this step, the on/off state of the switch swM is determined. If this is on, the process advances to step 23 to enable changing the shutter speed by dial operation, and thereafter the same routine as in the shutter priority mode is executed. On the other hand, if the switch swM is turned off, the process proceeds to step 27 to enable the aperture value to be changed by dial operation, and thereafter the same routine as in the aperture priority mode is executed.

When a predetermined period of time has elapsed after the pressing operation of the release button 1 was stopped, the photometry timer operation ends. Accordingly, the program advances from step 21 to step 30.

[Step 30] Output ports PTD, PFL, PA
E.B.

Set the output of PME, PFD, PBD, and PCD to “0”,
All the displays on the displays 5EGI-3EG6 are turned off. Also, the output of the output port PF is set to "0", and the transistor T
R, bat is turned off to stop the supply of power supply Vcc.

[Step 31] Similar to step 9, both the flag FsAB indicating whether the auto bracketing switch swAEE has been operated and the flag FsME indicating whether the multiplex shooting switch swME has been operated are reset to 0. .

The program then jumps to the start. Therefore, after the photometry timer ends, Step 1 → Step 19 → Step 170 → Step 20 → Step 21 → Step 30
→The standby mode of step 31 will be repeated.

Next, a description will be given of the time when the auto bracketing mode is set. First, a case will be described in which only the opening operation of the switch cover 6 is performed to set the auto bracketing mode. When the switch cover 6 is opened, the switch 5WS is activated in conjunction with it.
ET is turned on, and this on signal is input to input capo PA9. The program then proceeds from step 20 to step 40.

[Step 401 Auto bracket switch swA
Determine EB. Since the switch lid 6 has just been opened and the auto bracket switch swAEB has not been operated, the process advances to step 41.

[Step 41] Multiple shooting switch s w M E
Make a determination. Similarly, multiplex shooting switch s w M E
Since this operation has not been performed, the process advances to step 42.

[Step 42] Multiple shooting switch s w M E
A flag indicating whether or not a pressing operation has been performed
Determine E. Since the flag F s M E has been reset to 0 in step 9 when the battery BAT is in the initial loading state and the first stroke switch s w 1 is on, the process advances to step 43 .

[Step 43] Auto bracket switch swA
Flag FsAB indicating whether or not the EB pressing operation has been performed
Make a determination. As in step 42, step 9
Since the flag FsAB is reset to 0,
Step 21 Hejump.

If the switch lid 6 is opened in this manner and only the ON signal of the switch 5w5ET is input, nothing is executed.

Next, from the above state, remove the auto bracket switch s w
A case where pressing operations of A E B are performed once will be explained. When the auto bracket switch swAEB is pressed, an on signal is input (capo)PA
Il is input. The program then proceeds from step 40 to step 44.

[Step 44] It is determined whether the contents of the register RGTvS indicate the valve mode. If it is in valve mode, it will return to the start and will not enter auto bracket mode. If the valve mode is not set, proceed to step 45.

[Step 45] Auto bracket switch s w
A flag FsAB indicating that AEB is turned on is set to 1, and a flag FsME indicating that the multiplex shooting switch swME is on is reset to O.

[Step 46] Output ports PTD, PFL, PA
E.B.

The outputs of PME, PFD, PBD, and PCD are set to "0", and all the displays on indicators 5EGI to 5EG6 are turned off.

Next, the output of the output port PAEB is set to "1", and the auto bracket mark on the display 5EG2 is lit.

[Step 47] A flag FAEB indicating that the auto bracketing mode has been set is set to 1.

[Step 48] Step 23 or Step 2
7, the information reading routine associated with the operation of the dial 5 is executed. In this case, in step 80, if the stage number information is set to 0.5 using the dial 5, for example, the stage number is [-0, 5, O, 0, 5J, and if 1 is set, r- Three preset auto-bracket photographs will be taken in which the exposure is automatically changed in steps of 1, 0, and IJ.

Note that shooting with the number of steps r-0, 5, 0, 0, 51 means 0.5 of the standard exposure value calculated by calculation.
This means that photography is performed continuously using three exposure values: an exposure value that is one step under, a standard exposure value, and an exposure value that is 0.5 steps over the standard exposure value.

Proceed to step 71.

[Step 71] Determine whether the content of the register RGAEBN for storing the number of auto-bracketing shots is 3, and
If AEBN=3, proceed to step 49 and RGAEB
If N≠3, the process advances to step 72.

[Step 72] Determine whether the contents of the register RGAEBN are 0. If RGAEBN=0, proceed to step 49; if RGAEBN≠0, proceed to step 73.
Proceed to.

[Step 73] If this step is passed, the content of RGAEBN is 2 or 1 in step 71 and step 72 described above (the content of RGAEBN is 0 to 1).
It only takes values up to 3. ). When the value stored in RGAEBN is 3, there is an AEB setting and the specified A
Indicates that none of the three EB shots have been taken yet, and when RGAEBN = 2, the specified AE
B shows a state in which the first one of the three images has been taken, and two more remain to be taken. Similarly, when RGAEBN=1, it indicates that two out of three predetermined images have been taken and the last one remains, and R
When GAEBN=0, it indicates that the predetermined number of three AEB images has been taken, or that there is no setting for AEB photography. Therefore, if the content of RGAEBN is 2 or I, it means that AEB photography is in the middle of completing only one or two out of three images, and from this state it is possible to change the number of AEB steps. Accepting new dial operations may confuse the photographer, so it is necessary to prohibit this. Therefore, in this step, the register R in which the dial input value is stored is
Clear the contents of GH to 0.

This prohibits the contents of the AEB stage number storage register RGAEB from being updated in the next step 49.

[Step 49] Bracket stage number register RGA
Add the contents of EB and the contents of the dial, and register R again.
Store it in GAEB. As mentioned above, the minimum resolution by one click of the dial 5 can be set freely in increments of 0.5 steps or in increments of 1 step. Note that if the shutter speed and the aperture value are different from each other, a program that multiplies the contents of the register RGAEB by an integer may be inserted, and a detailed explanation will be omitted here since this is not relevant to the actual situation. Proceed to step 74.

[Step 74] AEB stage number register RGAEB
The contents of are stored in the AEB stage number display register RGAEBD. Further, the contents of the exposure correction value storage register RGCOMP are stored in the exposure correction value display register RGCOMPD.

[Step 75] AEB stage number display register RGA
The contents of EBD are output to the output port PBD, and the contents of the exposure compensation value storage register RGCOMPD are output to the output port PC.
Output to D.

As a result, the AEB settings are displayed on the displays 5EG5 and 5EG6.

The display 5EG5 displays numerical values indicating the number of stages, such as ro and 5J. In addition, the decoder CD used at this time,
The display 5EG5 is also used to display the aperture, and the aperture value is decoded from the apex value Av to the F number number, and the auto bracketing is decoded as a value every 0.5 stops, so the decoded content is However, it is necessary to display the AEB step number on the display 5EG5 only when entering the AEB step number setting mode, which is the flow from step 40 described above. The shutter speed display and the aperture value display are turned off at DISP OFF in step 46, and it can be considered that a blank code is output from the output port PFD to the decoder FD. Therefore, in the configuration of the decoder FD, if data such as aperture value display is output from the output port PFD, it is decoded with priority and displayed on 5EG5, and the output content from the output port PFD is displayed blank. In this case, if the AEB stage number is displayed based on the AEB stage number data output from the output capo-1-PBD, an appropriate numerical value can be displayed.

On the other hand, the display device 5EG6 is connected to the output port PB as described above.
AEB stage number data output from D and output port PC
Display is performed using exposure compensation data output from D. As an example of the display when AEB is set, if exposure compensation is 0.0, C4 to CO are ooooo, AE
If the B stage number is 1.0, A2 to AO become 010 and are output from the output capo) PCD and PBD, respectively.
The data converter DEC in the decoder CD outputs D6. B8. In order to set Dlo to "H" and the others to "L", drivers I) R6, DR8, and DRIO are set to 5 each.
5EG606, 5EG608, 5EG610 in EG6
is lit, and the display state is as shown in Figure 1 (C), indicating that the set AEB shooting is correct with no under-compensation by 11 steps against the appropriate exposure calculated from the photometric value),
A display that allows you to see at a glance that three photos will be taken with +1 step over is displayed.

If the AEB step number is the same 1.0 and exposure compensation +0.5 is set, A2 to AO will be the same (010XC4 to CO will be ooooi and C from output port PBD and PCD
D7. D9. Set only the Dll to “H” and set the others to “H”
L”, so drivers DR7 and DR9DRII
by 5EG607, 5EG609SE in 5EG6
G611 is turned on and displayed as shown in FIG. 10(d), and the set AEB shooting is -0.5 steps under, 100.
At a glance, you can tell that the camera takes three shots: 5 stops over and +1.5 stops over.

After such a display is made, the program proceeds to step 76.
Proceed to.

[Step 76] It is determined whether the contents of the aforementioned AEB shooting number storage register RGAEBN are 0 or not.

If this is other than O, the AEB setting has already been made or AEB photography is in progress, so the program jumps to the start without doing anything in particular.

If RGAEBN=O, this means that a new AEB setting has been performed. In this case, the process advances to step 77.

[Step 77] Since AEB photography has been newly set, 3 is set in the AEB photography frequency storage register, and it is stored that three AEB photography will be performed from now on. Step 5
Go to 0.

[Step 50] A flag FME indicating whether the multiple shooting mode is set is determined. If you are not in multiple shooting mode, return to the start. If the mode is multiple shooting mode, the process advances to step 51.

[Step 51] Register RGME for the number of multiple shots
Set the content to "3". This is because the number of auto bracket shots is predetermined to be three, so even if the number of multiplex shots is set arbitrarily, it will be forced to three, which will prevent photographers from making operational mistakes and prevent incorrect exposure. This is to eliminate danger. The program then returns to the start. Also, once the on signal of switch s w A E B is input,
After that, since the flag FsAB is set to 1 in step 45, even if the swAEB off signal is input, the program continues from step 40 → step 41 → step 42.
→ Step 43 → Step 48, and it is possible to continue to maintain the auto bracketing step number change mode with dial 5, and the photographer can operate dial 5 with the suppression operation of switch swABR stopped. .

The auto bracketing step number change mode can be canceled by turning on the first stroke switch swl, or by turning on the exposure compensation switch swCOMP, or by turning on the manual function change switch swMN, or by turning on the switch lid. This can be done by closing switch 6 and turning off switch 5w5ET. That is, when the ON signal of the first stroke switch swl is input, the program progresses in the order of step 1 → step 2 → step 15 →...
Even if the on signal of the exposure compensation switch s w COMP is input, the program proceeds in the order of step 1 → step 19 → step 2 → step 15 → etc. In step 9, the flag FsAB is reset to 0, and its display is also In step 10, the display switches to normal display. Also switch s w
When MN is turned on, step 170 → step 171 →
...and enters the manual function change routine, but does not proceed to the auto bracket stage number change mode. Further, when the off signal of switch 5w5ET is input, step 20→
In the process of the program progressing from step 21 to step 30 to step 31, the auto bracket mark display disappears at step 30, the step 31 flag FsAB is reset, and the program does not proceed to the auto bracket stage number change mode again.

Next, exposure calculation in auto bracketing mode will be explained. In the case of shutter priority mode, the contents of the bracket stage number register RGAEB are transferred to the aperture bracket stage number register RGBAv, as described in step 6, and in the case of aperture priority mode, the contents are transferred to the shutter bracket stage number register RGBTv as described in step 14. are memorized respectively. On the other hand, in the case of manual exposure mode, as described in step 18, it is determined whether it is manual mode 1 or manual mode 2 based on the contents of the manual function setting flag, and if it is determined that manual mode 1 is selected, the process proceeds to step 14. As in the aperture priority mode, the contents of the bracket stage number register RGAEE are stored in the shutter bracket stage number register RGBTv.If manual mode 2 is determined, the process proceeds to step 6, and the contents of the bracket stage number register RGAEE are stored in the shutter bracket stage number register as in the shutter priority mode. The contents of RGAEB are stored in the aperture bracket stage number register RGBAv. As a result, in auto bracket shooting in manual exposure mode, bracket shooting is performed by changing the shutter speed in manual mode 1, and bracket shooting is performed by changing the aperture value in manual mode 2. . In step 7, since the auto bracketing mode is set and the flag FAEE is set to 1, the process advances to step 52.

[Step 52] Bracket stage number register RGA
It is determined whether the contents of EB are zero or not. If the content is zero, the same exposure (standard exposure in the example)
This results in three shots being taken, which is pointless, so it is necessary to disable auto bracket shooting.

Therefore, in this case, the process advances to step 53.

[Step 53] A flag FAEB indicating auto bracketing mode is reset to 0. Matade Capo) PAE
Set the output of B to "0" and turn off the auto bracket mark display. Proceed to step 56.

[Step 56] Auto bracket shooting count register RGAEBN is set because auto bracket shooting is prohibited.
Clear the contents to O.

Next, by proceeding to step 8, the auto-bracketing exposure calculation is not performed, the flag FsAB is reset to 0, and a normal routine is executed.

In step 52, if the contents of the bracketing stage number register RGAEB are not zero, it is necessary to perform exposure calculation and displaying an auto bracketing mark based on the stage number information, so the process proceeds to step 54.

[Step 54] The output of the output port PAEB is turned on, and the auto bracket mark is displayed. This means that when the switch cover 6 is closed from the auto bracket mode setting state and the switch swSET is turned off, This is because all the displays are turned off in step 30, so if the first stroke switch s w 1 is turned on, it is necessary to turn it on again.

[Step 55] It is determined whether the first stroke switch swl is turned on. If it is turned on, the process advances to step 141.

[Step 141] The contents of the shutter speed information register RGTv are stored in the shutter speed information stack register RGTvS, and the contents of the aperture information register RGAv are stored in the aperture information stack register RGAvS. This is because in AEB photography, three photos are taken while changing the shutter speed or aperture value, but in order for the microcomputer COM to control the camera, the shutter speed information or aperture value information before changing is required. It is.

[Step 142 Since it has been confirmed in step 55 that the first stroke switch s w 1 is turned on, the AEB step display register RGAE is
Set the contents of the BD to 000. This is for displaying while sw1 is on during shooting with AEB settings, which will be described later.

[Step 143] and [Step 144] In both steps, it is determined whether the content of the AEB shooting number register RGAEBN is 3, 2, or 1. In other words, it is determined which of the three predetermined AEB photographs the next photograph is to be taken. If RGAEBN=3, that is, if the first one of the three predetermined AEE images is to be photographed, the process advances from step 143 to step 147.

Further, when RGAEBN=2, that is, when photographing the second image out of the predetermined three images for AEB photography, the process proceeds from step 143 to step 144 to step 148.

Furthermore, when RGAEBN=1, that is, when photographing the last one of the three prescribed AEB photographs, step 143→
The process proceeds from step 144 to step 145.

"Step 147" As mentioned above, if the AEB shooting number register RGAEBN = 3, proceed to this step and calculate the AE from the contents of the exposure compensation value storage register RGCOMP.
The contents of the B stage number storage register RGAEB are subtracted and the result is stored in the exposure correction value display register RGCOMPD.

Proceed to step 149.

[Step 149] Renstar RGAvO for aperture information
The contents are added to the contents of the register RGBA for the number of aperture bracket stages, and the result is stored in the register RGAv again. Also, the contents of the shutter information register RGTv and the contents of the shutter bracket stage number register RGBT are added and stored in the register RGTv again. This is the calculated aperture information in manual mode 2 during shutter priority mode and manual exposure mode, and the calculated shutter speed in manual mode 1 during aperture priority mode and manual exposure mode. This means that the information is changed according to the number of auto bracketing stages. In other words, if the autobracketing step number is set so as not to be a negative number at step 49, the value after the calculation at step 149 will be an underexposure value with respect to the standard exposure value.

Next, a case where the AEB shooting number register RGAEBN=2 will be explained.

[Step 148] RGAEBN=2, that is, AE
If this is the second of the three predetermined images for B photography, proceed to this step. In this step, the exposure compensation value display register RG
The contents of the exposure correction value storage register RGCOMP are stored as they are in COMPD.

Since the second shot is taken at the standard exposure value regardless of the number of bracket stages, the program continues from step 93 onward without performing the shutter speed or aperture shift calculations performed in step 149. Proceed to.

Next, the case where the AEB shooting number register RGAEBN=1 will be explained.

[Step 145] RGAEBN=1, that is, AE
If the first image is the last of the three predetermined B images, the process advances to this step. In this step, the exposure compensation value display register RGCOMPD is set to the exposure compensation value storage register RGC.
The sum of the contents of OMP and the contents of AEB stage number storage register RGAEB is stored.

[Step 1461: Subtract the contents of the aperture information register RGAv from the contents of the aperture bracket stage number register RGBA, and store the result in the register RGAv again. Also, the content of the shutter information register RGTv is subtracted from the content of the shutter bracket stage number register RGBT, and the result is stored in the register RGTv again.

This changes the aperture information in shutter priority mode and manual mode in manual mode 2, and the shutter speed information in manual mode 1 in aperture priority mode and manual mode, depending on the number of auto bracketing steps. means to change.

In this step, contrary to step 149, the calculated value becomes an exposure value that exceeds the standard exposure value by the number of bracket steps.

[Step 93 In step 55 described above,
The flag Fs is determined to indicate that the switch sw1 has been turned on and the process has proceeded to step 141 and subsequent steps.
Set the contents of w1 to “1”.

Further, in step 55, the first stroke switch sw
If it is determined that l is turned off, the photometry timer is in operation, so the process proceeds to step 90 and subsequent steps, in addition to steps 141 and subsequent '' described above.

[Step 90] Similarly to step 141, the contents of the shutter speed information register RGTv are stored in the shutter speed information stack register RGTvS, and the contents of the aperture information register RGAv are stored in the aperture information stack register RG.
Each is stored in AvS.

[Step 91] AEB stage number storage register RGA
The contents of EB are stored in the AEB stage number display register RGAEBD, and the contents of the exposure correction value storage register RGCOMP are stored in the exposure correction value display register RGCOMPD.

[Step 92] In step 55, the switch s
The content of the flag F s w 1 is reset to "0°" to indicate that it is determined that wl is off.

Steps 141 to 149 → Step 93 and Step 90 → Step 91 → Step 9 explained above
FIG. 8(d) shows an arrangement of the data stored in each register through each process according to the flowchart 2. By further proceeding with the program steps using the processing data shown in FIG. 8(d), step 10
Shutter speed display using 5EGI and 5EG5
The aperture value is displayed in step 160, and the exposure correction value in 5EG6 and the AEB step value are displayed in step 160.

After this, as described above, in step 163 the register R
If the content of GAEBN is not 0°゛ and step 16
If it is determined in step 4 that the switch s w COMP is off, the process advances to step 94 . Since it is now assumed that auto bracket photography is set, the content of the flag FAEB is "1" and the process proceeds to step 95.

[Step 95] Determine whether the content of the flag Fswl mentioned above is "1".
If the content of is "1", step 5 is performed as described above.
In step 5, it is determined that the switch sw2 is turned on, and the shutter speed or aperture value is shifted in steps 143 and below. This is determined, and if it is turned on, the process proceeds to the release sequence described later. On the other hand, if the content of the flag Fswl is "0°°", the switch s
It is determined that w1 has been turned off, and the process proceeds to step 90. Since no shutter speed or aperture shift calculation has been performed, the program does not proceed to the release sequence and returns to the start.

Next, a case will be described in which the valve mode is set by operating the dial 5 after the auto bracket mode is set.

Bracketing during bulb photography is basically meaningless, so it is more effective to cancel auto bracketing mode. Therefore, if it is determined in step 25 that the mode is the valve mode, the process advances to step 57.

[Step 57] Set the output of output port PAEB to “0”
” to turn off the auto bracket mark display.

Also, reset the auto bracket mode flag FAEB to O.

Next, when the contents of the AEB shooting number register RGAEBN are cleared to O, the setting of the multiple shooting mode will be described. In conjunction with the opening of the switch cover 6, the switch s w M E
When the ON signal is input, the process proceeds from step 41 to step 60.

[Step 60] Multiple shooting switch s w M E
A flag FsME indicating that is turned on is set to 1.

Also, a flag FsAB indicating that the auto bracketing switch swAEB is turned on is reset to O.

[Step 61] Output ports PTD, PFL, PA
E.B.

Set the output of PME, PFD, PBD, and PCD to 0°',
Turn off all displays. Next, set the output of only the output port PME to “1” and set the multiple shooting mode mark on the display 5.
Display it on EG4.

[Step 62] Flag FM indicating multiple shooting mode
Set E to 1.

[Step 63] It is determined whether or not the auto bracketing mode is set. If the auto bracket mode is selected, the process advances to step 64.

[Step 64] Since the mode is auto bracketing, similarly to step 51, the number of multiple shots is forcibly set to three, that is, the content of the register RGME for the number of multiple shots is set to "3".

If the auto bracketing mode is not set in step 63, the process advances to step 65.

[Step 65] Similar to step 48 and the like, an information reading routine associated with dial operation is executed.

[Step 66] Add the contents of the multiplexing number register RGME and the contents of the dial register RGH, and store the result in the register RGME again. Note that the number of times of multiplexing is an integer, so if the resolution of one click of the dial 5 is 0.5 steps, the contents of the dial register RGH are
It will be multiplied and then added.

It is also necessary to prevent the contents of the register RGH from becoming a negative number, but this is omitted here.

[Step 67] The contents of the multiple sheet same month register RGME are output from the output port PFD and displayed on the display 5EH5.

The program then returns to the start. Furthermore, once the on signal of the switch s w M E is input, the flag F s M E is set to 1 in step 60, so even if the OFF signal of the switch s w M E is input afterwards , step 41 → step 42 → step 63
Then, it becomes possible to maintain the multiple shooting number setting mode. The switch from auto bracketing step number change mode to multiple shooting setting mode is switch s w M E
You only need to turn on once, and the reverse transition can also be done by turning on switch s
It is clear from the flowchart in FIG. 2 that w A E B only needs to be turned on once.

Next, if the number of times of multiplexing is set once and then the number of times of multiplexing is set to zero (0), it is necessary to cancel the multiplex photography mode and turn off the multiplex photography mark.

Since the flag FME is set to 1 in step 8, this program is executed by proceeding to step 68.

[Step 68] Register RGME for the number of multiple shots
If the content is zero, the process advances to step 69.

[Step 69] Flag FM indicating multiple shooting mode
Reset E to O. Further, the output of the output port PME is set to "0", and the display of the multiple shooting mark is turned off.

If the contents of the register RGME for the number of times of multiple photographing are not zero in step 68, the process proceeds to step 70.

[Step 70] Set the PME output to “1”
Then, the multiple shooting mark will be displayed. This is because all the displays are turned off in step 30, so when the first stroke of the release button 1 is made again, the photographer is notified that the multiple shooting mode is in effect.

As described above, the preparation stage for photographing is completed.

Next, the sequence after the second stroke of the release button 1 is performed will be described. When the second stroke of the release button 1 is performed and the on signal (release signal) of the second stroke switch sw2 is input to the input port PAI, the process proceeds from step 11 in FIG. 2 to step 100 in FIG. 3.

[Step 100: Determine whether auto bracket mode is set or not based on the state of flag FAEB. If it is auto bracket mode, go to step 101.
Otherwise, proceed to step 102.

[Step 101] Set the output of the output port PFL to "'1"
", and the auto bracketing mark on the display 5EG2 is displayed blinking. This allows the photographer to reliably know that auto bracketing photography has started.

[Step 102] It is determined whether the ON signal of the self-switch 5ELF is input to the input port PA6. If the ON signal is input, it means that the photographing is by self-timer, so the process goes to step 103; otherwise, the process goes to step 104.

[Step 103] A self-timer measures 10 seconds.

[Step 1041: Output the contents of the aperture information register RGAv from the output port PAV. As a result, the aperture control drive circuit DAV converts the contents of the register RGAv into actual aperture information, and starts aperture control via the aperture drive actuator CAV such as a stepping motor.

[Step 105] A pulse signal is output from the output port PEO to turn on the transistor TRO and energize the mirror-up magnet MGO, which is the first fixed combination magnet. As a result, the mirror is raised by a known spring force.

[Step 106] It is determined whether an on signal of the switch sw MRUP for detecting the completion of mirror up is inputted to the input port PA2. Here, this loop is repeated until the ON signal is input, that is, until the mirror is completely raised, and when it is completely raised, the process proceeds to step 107.

[Step 107] Shutter information register RG
Since the contents of Tv are apex values, they are converted (expanded) into real-time data.

[Step 108] A pulse signal is output from the output port PEI, and the transistor TRI is turned on to energize the shutter front curtain magnet MCI. This results in
The shutter front curtain moves.

[Step 109: Determine whether the contents of register RGTvS indicate valve mode. If the valve mode is set, the process proceeds to step 110; otherwise, the process proceeds to step 111.

[Step 110] Second stroke switch sw2
Wait for the off signal to be input. This is because, since this is the valve mode, it is necessary to keep the shutter open while the on signal of the second stroke switch sw2 is being input.

[Step 111] Since it is not the bulb mode, a real time count is performed using the data expanded in step 107, and the calculated shutter time is measured.

[Step 112] When the real time count ends, a pulse signal is output from the output port PE2, the transistor TR2 is turned on, and the shutter rear curtain magnet MG2 is turned on.
energize. This causes the shutter trailing curtain to run.

[Step 113] It is determined whether the ON signal of the shutter trailing curtain switch 5wCN2 is input to the input capo PA5. Here, this loop is repeated until the ON signal is manually input, that is, until the shutter trailing curtain completes running, and once completed, the process proceeds to step 114.

[Step 114] Set the output of output port PAV to “0”
''. This returns the diaphragm to its open state.

[Step 115] Set the output of the output port PD to “1”
Then, the transistor TR3 is turned on to rotate the charging motor MD for mirror down and shutter charging.

[Step 116] It is determined whether the multiple shooting mode is set or not based on the state of the flag FME. If it is the multiple shooting mode, the process proceeds to step 117; otherwise, the process proceeds to step 120.

[Step 117] Subtract 1 from the contents of the multiplexing number register RGME and store it in the register RGME again.

[Step 118] It is determined whether the contents of the multiplexing number register RGME are zero. If it is zero, the process advances to step 119; if it is not zero, the process advances to step 121.

[Step 119] Since the content of the multiplexing number register RGME is 0, this means that multiplex photography has ended, so the flag FME indicating the multiplex photography mode is reset to O. Also, the output of the output port PME is set to O, and the multiple shooting mark display is turned off.

[Step 120] Start a timer for film feeding. Also, the output of output port PB is set to “1”,
The transistor TR5 is turned on to rotate the film feeding motor MB.

If the multiplex shooting mode is continued, the contents of the multiplex number register RGME are not zero, so the process advances from step 118 to step 121, and since step 120 is not passed, no film feeding is performed. Therefore, multiple photography is performed. Furthermore, when the multiplex photography is completed, the contents of the register RGME become zero, so the film is fed in step 120 after the multiplex photography mode is canceled as described above.

[Step 121] It is determined whether the ON signal of the charge completion detection switch swCGE is input to the input port PA3. On signal is not input,
In other words, if charging is not completed, step 123
The process proceeds to step 122, and when charging is completed, the process proceeds to step 122.

[Step 122] Since charging is completed, the output of the output port PD is set to “0” and the charging motor MD
Cut off the power to.

[Step 123] A switch s w F L M is turned on each time one frame of film is fed to the input capo-1-PA4.
It is determined whether or not the ON signal is input. If the ON signal has not been input, that is, if the feeding of one frame of film has not been completed, the process proceeds to step 124, and when the feeding is completed, the process proceeds to step 125.

[Step 124] Determine the state of the film feeding timer. Once the film has finished, the film cannot be fed any further, so the switch swFLM is not turned on. Then, proceed to step 150, and if not completed, proceed to step 1
21 and repeats the aforementioned sequence (step 121→step 123).

[Step 125] In step 123, switch s
When it is detected that the FLM off signal has been input, the output of the output capacitor PH is set to "0", the transistor TR5 is turned off, and the film feeding motor MB is stopped.

[Step 126] It is determined whether the auto bracket mode is set or not based on the state of the flag FAEB. If it is not the auto bracketing mode, the process proceeds to step 132; if so, the process proceeds to step 127.

[Step 127] The contents of the shutter speed information stack register RGTvS are stored in the shutter speed information register RGTv. Same (the contents of the aperture value information stack register RGAvS are changed to the aperture value information register RGAv)
Store in. This allows shutter speed information register R
Shutter speed information and aperture value information, which are the exposure amount of the standard exposure value before bracketing calculation, are returned to GTv and aperture value information register RGAv, respectively.

[Step 128] Subtract 1 from the contents of the auto bracketing (AEB) shooting number register RGAEBN and store it in the AEB shooting number register RGAEBN again.

[Step 129] The AEB shooting number register RGAEB is decremented by 1 as described above in step 128.
Determine whether the content of N has become 0. If the contents of this register RGAEBN are 0, it means that the predetermined three AEB photographs have been taken, and the program proceeds to step 134. If not, proceed to step 130.

[Step 130] Based on the on/off state of the switch 5wC8 input to the input port PA7, it is determined whether the mode is the quick shooting mode or the single shooting mode. N for snapshot mode
Jump to EXT3 (step 7 in Figure 2). In the case of single shot mode, proceed to step] 3.1.

[Step 131] Second stroke switch sw2
Wait for the off signal to be input. Since this is the single-shot mode, the sequence does not proceed to the next unless the photographer releases the release button 1 and releases the second stroke switch s w 2 from the on state. When the off signal is input, the program jumps to NEXT3.

Jumping from step 130 or 131 to NEXT3 is when AEB shooting is in progress and the prescribed three shots have not yet been taken. AE in steps 141 to 149 described above makes it possible to calculate the shift and move on to the next shooting.
This is as explained in the B operation.

A case where it is determined in step 129 that the predetermined three images of AEB photography have been completed will be explained.

[Step 134] Output 0 from PFL. As a result, 5EG3 stops blinking and becomes a normal lighting state.

[Step 135] AEB shooting number memory R
Set data 3 to GAEBN. This makes it possible to take three new AEB shots.

[Step 136] Second stroke switch sw
Wait for the 2nd off signal. Since we have just finished taking the prescribed three images for AEB photography, the s connected to input port PA7
w Regardless of whether the mode is single shooting mode or continuous shooting mode set by CS, the photographer releases the pressure on release button 1 and presses the second stroke. Unless the switch sw2 is turned off once, the next photographing cannot proceed.

When the off signal of the second stroke switch sw2 is input, the program is started.

Next, a case where the auto bracket mode is not used will be described. In this case, since the flag FAEB is 0, the process advances from step 126 to step 132.

[Step 132: Input Capo] Based on the on/off state of switch 5wC8 input to PA7, it is determined whether the mode is continuous shooting mode or single shooting mode. In the case of quick shooting mode, the process returns to the start, and in this case, the release button 1 is pressed and the 1st. Since the ON signal of the second stroke switch swl, 2 has been input, the next photographing begins. In the case of single shooting mode, the process advances to step 133.

[Step 133] Second stroke switch s w
Wait for the second off signal to be input. Since the camera is in single shot mode, the photographer should loosen the pressure on release button 1 and press the second release button.
Unless the stroke switch sw2 is turned off once, the next photographing sequence cannot proceed. When the off signal is input, the process returns to the start.

Next, we will discuss the case where the film ends during shooting. In this case, as mentioned above, the time measurement by the film timer, which is a one-second timer, for example, ends, so step 12
4, proceed to step 150.

[Step 150] The output of the output port pc is set to "1", the transistor TR5 is turned on, and the rewind motor MC is rotated. Thereby, rewinding of the film is started.

[Step 151] Start a rewind timer used to detect whether rewinding of the film has finished.

[Step 152] It is determined whether the state of the film switch swFLM has changed. If it has changed, the process returns to step 151 and the rewind timer is started again. If there is no change, the process advances to step 153.

[Step 153] It is determined whether or not the time measurement by the rewind timer has ended. If the process has not ended, the process returns to step 152.

As can be seen from the above, step 152. The process proceeds through the loop of step 153, and when the completion of feeding of one frame is detected, the process proceeds from step 152 to step 151, and this loop is repeated when rewinding the film. After that, when all the films are wound up in the cartridge, for example, the cartridge stops rotating and the state of the film switch swFLM no longer changes. If this is detected, the process proceeds to step 154.

[Step 154] Set the output of the output port PC to “0”
and turns off the transistor TR5 to stop the rewind motor MC. This completes the rewinding of the film.

[Step 155] FAEB, which is a flag indicating auto bracketing mode, is reset to O. Also, the contents of the auto-bracketing shooting number register RGAEBN are also cleared to 0. Furthermore, the outputs of output ports PAEB and PFL are both set to 0, and the blinking display of 5EG3 (AEB mark) is turned off.

[Step 156: The contents of the auto bracket stage number storage register RGAEB and the auto bracket stage number display register RGAEBD are both cleared to 000.

Furthermore, the AEB stage number display register RGAEBD (-00
0) is output to the output port PBD.

The program then returns to the start.

Also, during auto bracket shooting, in other words,
If you have to take a series of shots, but the film runs out midway through, step 1 after the 1st or 2nd frame.
It enters the routine after 50. In such cases, if auto bracketing continues with the newly loaded film, there is a risk that the subject may be different or the photographer may misunderstand, so at the same time, the photographer should be informed of this. It is desirable to cancel auto bracketing mode. Looking at this in the flowchart of FIG. 3, when the film ends after the auto-bracketing mark is flashed in step 101, the process automatically shifts to film rewinding. While this film rewinding is being executed, the flashing display of the auto bracket mark has not yet been canceled. Therefore, the auto bracket mark, which normally would not be displayed, is displayed during film rewinding, making it difficult for the photographer to know that the film has ended without auto bracket shooting being completed completely. You can know.

In other words, this is the warning display. Also, in step 155, the flag FAEB indicating the auto bracketing mode is reset to 0, and the contents of the AEB shooting number storage register RGAEBN are also cleared to O, so that the newly loaded film can be automatically bracketed like a conventional camera. There is also the inconvenience of continuing filming.

〔Effect of the invention〕

As explained above, a camera with a manual exposure mode has a third operation member for switching functions in the manual exposure mode, and the operability of the manual exposure mode can be changed in advance according to the operation of the third operation member. A first mode in which the shutter speed can be set by operating the first operating member and the aperture value can be set by operating the first operating member and the second operating member; It is possible to switch between a second mode in which the aperture value can be set by operating the first operating member and the shutter speed can be set by operating the first operating member and the second operating member. This has the effect that the user can obtain a camera with easy-to-use operability that suits the user's preferences and the nature of the subject to be photographed. Furthermore, since the information on the selected operability mode is stored in the non-volatile memory, there is no need to worry about user confusion due to this information being canceled when replacing the battery.

In addition, a camera with an auto-bracketing function in manual exposure mode has an operating member for changing the manual function, and depending on the operation of this operating member, the aperture value is fixed and the shutter speed is changed during auto-bracketing shooting in manual exposure. By making it possible to select in advance whether to perform bracket photography that changes the shutter speed or to change the aperture value while fixing the shutter speed, camera users can use the camera more frequently depending on their own preferences and what they are photographing. This has the effect of allowing you to use the high bracketing mode without any trouble when shooting. Furthermore, since the information on the selected bracketing mode is stored in the non-volatile memory, there is no need to worry about the information being canceled and causing confusion to the user when the battery is replaced.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of a camera having an information or mode setting device according to the present invention, FIG. 2, FIG. 3, and FIG.
The figures are an explanatory diagram showing a program flow for explaining the operation of the embodiment shown in Fig. 1, Fig. 5 is a front view showing the configuration of the first illustrated camera, Fig. 6 is a top view showing the configuration of the first illustrated camera, 7
The figure is a rear view showing the configuration of the first illustrated camera, FIG. 8(a)
8(b), (c), and (d) are explanatory diagrams for explaining the display operation of the first illustrated camera, and FIG. 9 is a circuit diagram showing the configuration of the display of the first illustrated camera. Figure 8 (a)
FIG. 1O is an explanatory diagram showing the display state on the display 5EG6 of the first illustrated camera.

Claims (4)

[Claims] (1) A first operating member for selecting the first manual exposure mode or the second manual exposure mode, second and third operating members for setting exposure information, and the first operating member for setting exposure information.
In the manual exposure mode, the shutter speed is set as exposure information in response to the operation of the second operation member, and the aperture is set as exposure information in response to the combined operation of the second and third operation members. setting the aperture value as exposure information in response to the operation of the second operation member in the second manual exposure mode, and setting the aperture value as exposure information in response to the operation of the second operation member and the third operation member in the second manual exposure mode. An information setting device for a camera having an information setting circuit that responsively sets a shutter time as exposure information. (2) The information setting circuit has a first memory for setting the shutter speed and a second memory for setting the aperture value, and further includes a second operation member in the first manual exposure mode. transmitting an operation signal to the first memory;
The contents of the first memory are updated by the operation signal, while in the second manual exposure mode, the operation signal of the second operation member is transmitted to the second memory, and the contents of the second memory are updated by the operation signal. A first selection circuit is updated by the signal, and in the first manual exposure mode, the operation signal of the second operation member is transmitted to the second memory by the operation signal of the third operation member, and the operation signal of the second operation member is transmitted to the second memory. The contents are updated by the operation signal of the second operation member, while in the second manual exposure mode, the contents are updated by the operation signal of the third operation member.
Claim 1, further comprising a second selection circuit that transmits the operation signal of the operation member to the first memory and updates the contents of the first memory with the operation signal of the second operation member. Information setting device for cameras. (3) A rewritable nonvolatile memory is provided for storing the first manual exposure mode or the second manual exposure mode set by the first selection means, and the information setting circuit selects the information setting circuit according to the contents of the memory. An information setting device for a camera according to claim 1, which controls the operation of the camera. (4) A first mode in which multiple frames are taken at the manually set aperture value while shifting the manually set shutter time, and multiple frames are taken at the manually set shutter time. A camera comprising: an operating member for selecting a second mode in which the manually set aperture value is shifted; and an exposure control circuit for performing photographing in the first and second modes. .