JPH0422931A - Camera provided with automatic zooming mechanism - Google Patents

Abstract

PURPOSE:To prevent failure in photographing caused by the change of composition by providing an automatic zooming function temporarily releasing means for stopping the actuation of an automatic zooming function when an operation is performed by a remote control means in an automatic zooming temporarily releasing mode. CONSTITUTION:This camera is provided with a range-finding means 51, a photographing magnification decision means 52, the remote control means 53 and the automatic zooming function temporarily releasing means 54. When an automatic zooming temporarily stopping mode is set and photographing is performed by the means 53, in such a case, automatic zooming photographing is not performed by a camera main body even though the automatic zooming photographing is commanded by the means 53. Therefore, in the automatic zooming temporarily releasing mode, the automatic zooming mechanism 51 and 52, is not actuated even when the photographing by the automatic zooming mechanism 51 and 52 is instructed by the means 53. Thus, an error in photographing caused by the change of composition in the automatic zooming mode, which is not intended, is prevented.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to automatic photography magnification adjustment (hereinafter abbreviated as autoism).
The present invention relates to a camera having a mechanism, and particularly relates to a camera having an auto-zoom mechanism having a remote control device.

[Prior Art] Conventionally, a camera with a remote control device (hereinafter abbreviated as a remote control) has been proposed. A camera with a remote control is very convenient because the photographer can decide the timing of the release himself when taking a picture of himself. Apart from this, cameras with an auto zoom function have also been proposed. Cameras with an auto zoom function are very convenient because the camera automatically determines the appropriate magnification without the photographer having to perform any zoom operations.

Note that the auto zoom function is a function that automatically adjusts the focal length f of the photographic lens so that it becomes f - β x D in order to obtain the set shooting magnification β for a given subject distance. say. For example, if a photo is taken in a horizontal position, the magnification β is generally 1/120 for a full-body photo.
If it is an upper body photo, it will be selected as β-1/70.
If it is a face photo, β-1/30 is selected.

[Problems to be Solved by the Invention] There may be cases where the auto zoom function is activated by a remote control.

When using a camera with an auto-zoom function to remotely photograph a subject at any angle of view, the camera body is first set to auto-zoom temporary release mode so that the camera does not activate the auto-zoom function.

The photographer then looks through the viewfinder and decides on the composition.

At this time, even though the camera body is in the auto-zoom temporary release mode, the photographer may mistakenly send an auto-zoom command signal using the remote control. In this case, the problem arises that the auto-zoom mechanism works and the composition you have decided on changes.

The second invention was made to solve the above-mentioned problems, and is to solve the problem of shooting failures due to changes in composition due to the auto-zoom mechanism after the composition has been determined, in a camera that is capable of remote-controlled shooting using the auto-zoom mechanism. It is an object of the present invention to provide a camera having an auto-zoom mechanism that can perform two functions.

[Means for Solving the Problems] A camera having an auto-zoom mechanism according to the present invention has a configuration as shown in FIG. 1 in order to achieve the above object. That is, the camera having an auto-zoom mechanism according to the present invention includes a distance measuring means 51 that measures the distance to the subject, a photographing lens 12 whose focal length can be changed, and a photographing magnification when photographing the subject. The focal length of the photographing lens 12 is automatically set from the subject distance obtained by the distance measuring means 51 and the photographing magnification selected by the photographing magnification selection means 52. The camera according to the present invention having a zoom function is operated in an auto zoom mode and an auto zoom temporary release mode for temporarily canceling the auto zoom mode, and the camera according to the present invention further performs the auto zoom function remotely. remote control means 53 for camera or remote control means 5
3 and is operated in the automatic zoom temporary release mode, the automatic zoom function temporary release means 54 stops the operation of the auto zoom function.

However, FIG. 1 is a block diagram showing the configuration of the present invention in functional blocks, and in the embodiments described later, the main part of the above configuration is realized by a microcomputer program.

[Action Co. The operation of this invention will be explained below with reference to FIG.

In a camera capable of auto-zoom photography using the remote-control means 53, when the auto-zoom pause mode is set and the remote-control means 53 takes a picture, even if the remote-control means 53 commands auto-zoom shooting, the camera body Auto zoom shooting is not performed on the side. Therefore, in the auto-zoom temporary anti-snoring mode, even if the remote control means 53 instructs the auto-zoom mechanism to take a picture, the auto-zoom mechanism does not operate.

[Embodiments of the Invention] FIG. 2A is a perspective view of a camera having a remote photographing function and an auto-zoom mechanism according to the present invention.

Referring to FIG. 2A, a camera having a remote photographing function and an auto zoom mechanism according to the present invention is provided on the front side of the camera body, and has a main switch operation lever 10 for enabling zoom operation, and a main switch operation lever 10 on the front side of the camera body. A release button 11 is provided at the top for metering and exposure, a photographic lens 12 is provided at the front of the camera body for photographing a subject, and a release button 12 is provided at the top of the camera body for setting an auto zoom mode. Auto zoom mode button 1 for
3, a zoom operation lever 14 provided on the top of the camera body and serving as a seesaw type switch for switching the focal length of the photographic lens 12 between the telephoto direction and the wide direction; It covers a display LCD 15 composed of a liquid crystal for displaying shutter speed, etc., a shooting mode button 16 for shooting in self mode or remote control mode, a light receiving window 32 for receiving remote control signals, and a lens 12. and a lens cap 30.

The release button 11 is a two-stage push type, and one
The photometry switch S is turned on by pressing it in one step (half-way).
Photometry is started, and the release switch S2 is turned on by pressing down two steps (fully pressed down), and exposure is performed.

The zoom operation lever 14 includes a zoom in switch S4 for moving the taking lens 12 in the telephoto direction (direction in which the focal length becomes larger) and a zoom in switch S4 for moving the taking lens 12 in the wide direction (direction in which the focal length becomes smaller). and an out switch S5. Note that the focal length of the photographic lens 12 is 38 to 90 mm.

The lens cap 30 can be attached to the camera body to protect the camera lens. This lens cap 30 has a built-in transmitting circuit for remote photographing. Further, on the back side (lens side) of the lens cap 30, as shown in FIG. 2B, operation switches S to S16 for remote photography are provided. The light means 33 emits light and sends a signal to the camera.

At locations adjacent to each of the operation switches 513 to S17 on the lens cap 30, there are a one-person shooting mark 30a, a two-person shooting mark 30b, and a three-person shooting mark 30, as shown in FIG. 2C.
c, multi-person shooting mark 30d, release button mark 3
Arrow mark 30f indicating the light projection direction of the 0e1 light projection means 33
It is written that

Note that instead of the photographic marks 30a to 30d, a photographic magnification β suitable for each purpose may be directly written.

FIG. 3 is a perspective view of the lens barrel section 20 for holding the photographic lens 12. Referring to FIG. 3, the lens barrel section 20 includes a lens barrel 21 for holding a photographic lens at one end thereof, and a lens barrel 21 for holding a photographing lens at one end thereof.
a zooming motor M provided near the lens side end of the lens barrel 21 for moving the photographing lens 12 in the telephoto direction or the wide direction by rotating the lens barrel 21;
a zoom encoder 22 for detecting the zoom position by rotation of the zoom encoder 22, and an output signal Sl from the zoom encoder 22.
an encoder brush 26 for taking out the i510;
It also includes a holding member 23 for holding the lens barrel 21 on the camera body. A lens barrel rotation gear 24 for transmitting the driving force of the zooming motor M1 to the lens barrel 21 is provided on the photographing lens 12 side of the lens barrel 21. By operating the zoom operating lever 14 shown in FIG. 2A, the zooming motor M
, is driven, and its driving force is transmitted to the lens barrel 21 via the lens barrel rotation gear 24, and the focal length of the photographic lens 12 changes. The focal length at the lens stop position is detected by the zoom encoder 22, and the focal length at that time is transmitted via the encoder brush 26 as an encoder signal to a control CPU (described later) provided within the camera body. The details will be described later.

FIG. 4 is a diagram showing the relationship between the output signal of the zoom encoder 22 explained in FIG. 3 and the focal length of the photographing lens 12 at that time. Referring to FIG. 4, the zoom encoder 22 is a Gray code type encoder and has an encoder pattern as shown in the center of the figure. The zoom encoder has 21 zoom positions represented by 1 to 21, and a representative focal length value for each zoom position is shown as a representative f value. For example, when the zoom position is 1, the typical f value is 90 mm, and at this time the photographing lens 12 is at the telephoto end. On the other hand, the representative f value at zoom position 19 is 38 mm, and at this time the photographing lens 12 is at the wide end. The zoom position 2021 is when the photographing lens 12 is in a retracted state. The encoder pattern is as shown in the center of the figure, and the output signal 86 ~ as shown in the figure
S, o power (outputted as an encoder signal from the encoder block 26.The signal contents are shown in the function column, where ON and OFF of the encoder pattern are respectively expressed as H.The contents of the function are expressed in hexadecimal notation. This is a hexadecimal code. That is, when the zoom position is determined, the representative f value is determined accordingly, and the output data at that time is output as a hexadecimal code in 5 bits.

FIG. 5 is an overall block diagram showing an electric circuit of a camera having a remote photographing function (hereinafter abbreviated as remote photographing function) and an auto zoom mode according to the present invention. Referring to FIG. 5, an electric circuit of a camera having a remote control photographing function and an auto zoom mode according to the present invention includes a main switch So
5-bit output signals 86 to Sho from the zoom encoder shown in FIG. 3 and the film sensitivity reading terminal D, which will be explained later.
A control CPU which inputs the output signals of Control CPUI
A flash block 5 outputs monitor signals RDYI and RDY2 of the light emission state in response to a flash boost start signal FC from the flash block 5, and a zooming motor M41 winding/rewinding motor connected to the control CPUI and responsive to the output signal. A motor driver section 4 that controls the operation of the controller M, a display section 6 that displays a predetermined display on the display LCD 1.5 in response to output signals LED and LCD from the control CPU, and a display section 6 that receives remote control signals and controls the A remote control receiving circuit 7 that outputs a received signal to the CPU, and remote control operation switches SI3 to S.
16, and a remote control transmitter 8 that generates different remote control signals (details will be described later) depending on the inputs. The photometry/distance measurement circuit section 2 receives the data transmission destination designation signal CSI from the control CPUI and the photometry/distance measurement circuit on signal AFES for turning on the photometry/distance measurement circuit, and transmits the photometry/distance measurement circuit data to the control CPUI. Read signal AFE
Output D. The shutter block 3 receives a data destination designation signal C52, focus data, a shutter control data output signal 5HTD, and a focusing start command signal STR from the control CPUI. The motor driver section 4 includes a zooming motor driver section 4a that controls the zooming motor M, and a second winding/rewinding motor driver section 4b that controls the winding/rewinding motor M2. receives the zooming motor M and drive signals zcw and zccw from the control CPUI, and the winding/rewinding motor driver section 4b receives film winding motor control signals wcw and wccw signals from the control CPUI. The display unit 6 is a display signal LED using a light emitting diode.
and a liquid crystal display signal LCD, and display the respective display contents.

When the remote control receiving circuit 7 receives a remote control signal from the outside, it outputs a received signal RMC to the control CPU 1. The received signal RMC is normally "L", but it becomes "H" when the signal is received.

Zoom motor Fv1. (:') Control signal zcw, zcc
lol.

Table 1 shows the values of and the state of the motor at that time.

In addition, the control signals WCW and wc of the winding/rewinding motor M2 are
cw and the state of the motor at that time are shown in Table 2.

Table FIG. 6 is a diagram showing the display contents of the display LCD shown in FIG. 2A. When the camera is in normal mode, the display as shown in Figure 6(a) is displayed, and when the camera is in auto zoom mode, the display as shown in Figure 6(b) is displayed.
When in the remote control mode, a display as shown in FIG. 6(e) is made, and when in the self mode, a display as shown in FIG. 6(d) is made. The entire display segment necessary for performing such a display is shown in FIG. 6(e).

Referring to FIG. 6(e), the display LCD has an auto zoom mode display segment 151, a film presence/absence confirmation display segment 152, a film counter 153, a film loading confirmation display segment 154, and a self mode display segment 155. , a remote control mode display segment 156.

The camera capable of remote photographing and automatic zoom according to the present invention has a normal mode, an automatic zoom mode, a self mode, a remote control mode, and an automatic zoom temporary cancellation mode, as shown in FIG. FIG. 7 shows the relationship between such transitions of each mode. Here, the normal mode is a mode in which self-photography and remote photography are not performed, and is not an auto-zoom mode but an initial mode when the camera is activated. Selfie mode is a mode for taking self-photographs, a mode for taking group photos, etc. After pressing the release button 11,
In this mode, exposure is performed after a certain period of time has elapsed. Auto zoom mode (hereinafter abbreviated as AZ mode) is a mode in which the focal length f of the photographic lens is automatically adjusted so that a photograph with a photographic magnification set for a given distance fiD to a subject is obtained. The AZ temporary release mode is a mode that temporarily releases the AZ mode. The remote control mode is a mode for remote photographing using a remote control.

The transition between the above five modes will be explained with reference to FIG. To change from normal mode to AZ mode when the camera is activated, the auto zoom mode button 13 shown in FIG. 2A can be pressed. The same applies when returning from AZ mode to normal mode. That is, the normal mode and the AZ mode are repeated each time the auto zoom mode button 13 is pressed once. When changing from normal mode to self mode, the user only has to press the photographing mode button 16 shown in FIG. 2A. Moreover, when changing to the remote control mode, it is sufficient to press the photographing mode button 16 in the self mode. When the shooting mode button 16 is pressed in remote control mode, the mode returns to normal mode. In other words, each press of the shooting mode button 16 switches to normal mode →
Switches from self mode to remote control mode to normal mode. In addition, when in selfie mode, the camera automatically returns to normal mode after the selfie shot is finished.

To switch from the AZ mode to the AZ temporary release mode, the zoom operation lever 14 shown in FIG. 2A can be operated to press the zoom-in switch S4 or the zoom-out switch S5. Conversely, from AZ temporary release mode to A
To return to the Z mode, the auto zoom mode switch S may be turned on by pressing the auto zoom mode button 13 shown in FIG. 2A, or single frame photography may be terminated. When switching from the AZ temporary release mode to the selfie mode, the selfie switch S1□ may be turned on by pressing the photographing mode button 16. To switch between AZ mode and self mode, press auto zoom mode switch S or self switch S5.
Just turn on.

To switch from remote control mode to AZ mode, it is sufficient to turn on the auto zoom mode switch S3.

FIG. 8 is a flowchart of a main routine showing the operation of the camera shown in FIG. The camera having a remote photographing function and an auto zoom mode according to this embodiment starts its operation by inserting a battery into the camera body and resetting it. Referring to FIG. 8, when the camera is reset, an initialization subroutine (#2) is entered for initializing various parameters, flags, memory, etc. for operating the camera. Next, the main routine (#4) is entered, and it is determined whether or not the main switch SO has changed (#6). Here the main switch So
When it is determined that the main switch has changed, the main switch check routine (#20) is executed to check the main switch.
). If it is determined in #6 that the main switch So has not changed, the main switch So
It is determined whether or not is on (#8). Main switch S
If o is off, the process moves to the main routine (#4). If it is determined that the main switch So is on, it is determined whether the photometry switch S1 is on or not (#
10). If it is determined that the switch is on, the processing flow moves to a photometry switch-on routine (#22). If the photometry switch S is not on, it is determined whether the auto zoom mode switch S3 is on (#12). If it is determined that the switch is on, the processing flow moves to the zoom mode switch-on routine (#24). When it is determined that the auto zoom mode switch S is off, it is determined whether or not the shooting mode switch 512 is on (#14), and when it is determined that the shooting mode switch 512 is on, the shooting mode switch on routine (#26) is performed. The processing flow moves to , and if it is determined that the zoom-in switch S4 is off, it is determined whether or not the zoom-in switch S4 is on. If the zoom-in switch S4 is not on, it is determined whether the zoom-out switch S5 is on. If the zoom-in switch S is on or the zoom-out switch S5 is on, the processing flow moves to a zoom switch-on routine (#28). If the zoom out switch S5 is off in step #18, it is determined in step #19 whether or not the remote control mode is set.

If it is not remote control mode, the program moves to the main routine (#4). If remote control mode is activated, signal R
The state of the MC is determined. If the signal RMC is H' upon reception of the remote control signal, the program moves to #23, a remote control determination routine. If it is "L", the processing flow moves to the main routine (#4).

FIG. 9 is a flowchart showing the contents of the main switch SO check routine shown at step #20 in the main routine of FIG. Referring to FIG. 9, in the processing flow, when the main switch So check routine is entered, the main switch S is first checked.

It is determined whether the change was from off to on (#
30). If the change is from off to on, the photographing lens 12 is set in the drive direction or telephoto direction (#3
2). Next, take the photographic lens] to the 2nd stop position or to the wide end (4th
19) at the zoom position shown in the figure.

On the other hand, when it is determined in step #30 that the change in the main switch So is from on to off, it is necessary to retract the photographic lens 12, so the drive direction is set to the wide direction (#38), and the photographic lens 12 is set to the wide direction (#38). The stop position of is set to the sinking position (the position of the zoom position 21 shown in FIG. 4) (#40). After the stop position is set in step 34 or step 40, the processing flow moves to a zooming subroutine (#36), and then moves to the main routine (#4).

Note that the drive direction set in steps #32 and #38 is specifically stored as data of 1 or 0 on the RAM of the control CPUI.

That is, when the drive direction is the telephoto direction, 1 is set, and when the drive direction is the wide direction, O is set.

Next, the collapsing operation of the photographic lens 12 will be explained. Collapsing the photographic lens 12 refers to storing the lens barrel 21 within the camera body when the photographic lens 12 is not used. When the photographic lens 12 is at the retracted zoom position shown in FIG. 4, the photographic lens 12 is covered with a barrier 25 as shown in FIG. In addition, photographing lens 1
When the barrel is in the middle of collapsing from the zoom position 2, as indicated by 20, the barrier 25 is half-open, making it impossible to take photographs.

Next, remote control signal discrimination will be explained with reference to FIGS. 10A to 11. First, the remote control signal waveform will be explained with reference to FIG. 10A. This figure shows a received signal RMC when a remote control signal is received.

First, the signal becomes "H" for 10 m5 (remote control start signal). The time of 10 m5 is sufficiently longer than the time required to determine each switch in the main routine described above. This signal causes the control CPU to:
Shift the program to the remote control identification routine. Next 1
It is set to "L" for ms, and thereafter remote control mode data is sent in 3 bits to "H" or "L" every 1 ms.

The remote control mode data and its contents are shown in FIG. 10B.

For example, when the remote control mode data is 000, the camera only performs release when performing auto zoom.

Also, the remote control mode data is 001.010.011.
When the value is 100, the release is performed after performing auto zoom, but the release is performed after the size of the subject is set to the desired size by the photographer (described later) according to the data contents. These signals are sent one-to-one to the operation switches S+3 to S7 on the lens cap.
It is compatible with , and the photographer can be selected arbitrarily.

Next, a flowchart of the remote control determination routine will be described with reference to FIG. First, in #501, it waits for the reception signal RMC to become "L".

After the 10m5 remote control start signal is output, “L”
When # is reached, the program advances to #503 and from there the control CPUI waits 1.5ms. Then, the received signal RMC is input and stored in memory (#505, #507). Next signal 3
Determine whether or not a bit has been received, and if 3 bits have not been received, wait for 1 ms at #511, and the program returns to #5.
Go to step 05 and repeat the above operation. When 3 bits are received, the program proceeds from #509 to #513, and the mode is determined as explained in FIG. 36C.

Next, it is determined whether auto zoom is necessary (#515).

When it is determined in #515 that zooming is not necessary, the program proceeds to #5]9 where the auto-zoom flag is set.

When it is determined in #515 that auto zoom is necessary, the process further proceeds to #516, where it is determined whether or not the AZ temporary release mode is set. If it is not the AZ temporary release mode, the program proceeds to #517 and sets the auto zoom flag FAZ. On the other hand, when it is determined in #516 that the mode is the AZ temporary release mode, it is displayed that the mode is in effect and that the auto-zoom command signal from the remote control is ignored, and the auto-zoom flag FAZ is reset in #519. Here, the auto zoom flag FAZ is a flag for performing auto zoom even in remote control mode, and becomes 1 when auto zoom is necessary.

Then, the remote control flag FRMC is set to 1 (#521), and the process moves to the S, ON routine described later. Here, the remote control flag FRMC is a flag for storing whether or not the release is performed by the remote control, and is set to 1 when the release is performed by the remote control. In this embodiment, the desired photographing magnification can be selected using the remote control, but auto zoom may not be performed during remote control photographing. By doing so, the remote control signal is simplified and the structure of the remote control transmitter becomes simple.

Next, the processing flow when the photometry switch S is pressed or when the release is performed using the remote control will be described with reference to FIG. When the photometry switch S is turned on by pressing the release button 11 one step,
Alternatively, when a release signal from the remote controller is received, the processing flow moves to a photometry/distance measurement subroutine (#50), and then it is determined whether or not AZ mode is used (#52). AZ
If it is determined that it is in the mode, the AZ operation subroutine (
#54), AE calculation (#56), flash boost subroutine (158), zooming subroutine (#6)
0) are executed.

However, AE calculation 156) is the AZ calculation subroutine (#5
This is performed based on the zoom position obtained from the calculation result in step 4). If it is determined in step #52 that the mode is not AZ mode, then in step #53 it is determined whether FAZ is 1 or 0. FAZ-1
If so, the program advances to #54 and performs the operations described above. When FAZ-○, AE calculation (#62) is performed without performing AZ calculation, and flash boosting (#62) is performed.
64) is performed. After the zooming subroutine (#60) in AZ mode or the flash boost (#64) when not in AZ mode, it is determined in #65 whether or not the release was performed by the remote control, and if the release was not performed by the remote control, the metering switch is turned on again. It is determined whether S1 is turned on (#66). If the photometry switch S is on, it is determined whether the release switch S2 is on or not, and if the release switch S2 is off, the flash boost is performed again (#70). The processing flow moves to step #66. If the release button S2 is on in step #68, or if it is determined in step #65 that the release is by remote control, it is determined in step #69 whether or not the self mode is on.
After waiting for 0 seconds (#71), if the mode is other than self mode, immediately proceed to the next step. Then, the prism (#72) (described later) performs minute zooming to ensure resolution, and the focusing/exposure subroutine (#74)
, after one frame winding (#76), it is determined whether the AZ temporary release mode is set (#78).

If it is AZ temporary release mode, the shooting mode changes from AZ temporary release mode to AZ mode (#80), the current mode is displayed on the display LCD 15, and after setting the remote control flag FRMC to 0 (#83), the program moves to the main routine. In step #66, set the photometry switch S.
If I is off, or if the AZ temporary release mode is not set in step #78, the program proceeds to the main routine after similarly setting the flag FRMC to 0.

The method of displaying the mode on the display LCD 15 is as follows:
If in AZ mode, auto zoom mode display (Fig. 6)
The segment indicated by 151 in d)) is lit, and if the AZ temporary release mode is selected, the auto zoom mode display 151 is displayed.
is flashed at a frequency of 2Hz.

Note that this AZ temporary release mode is used in the following cases. For example, when the AZ mode is selected, the size of the subject (imaging magnification) is determined by the camera. However, you may not like this size. In such a case, by operating the zoom operation lever 14 and setting the AZ temporary release mode, the size of the subject can be changed by operating the same lever in the same way as during normal zooming.

FIG. 13 shows a subroutine when the auto zoom mode switch S3 is turned on. Referring to FIG. 13, when the auto zoom mode switch S is turned on, it is determined whether the AZ mode is selected (#90). If it is determined that the mode is the AZ mode, the shooting mode or the AZ mode is switched to the normal mode (#92). Step #90
If it is determined that the camera is not in AZ mode, the shooting mode is set to AZ mode (#94) if it is normal mode or AZ temporary release mode, and it is determined whether the zoom lens is equipped with a teleconverter. (#98)
, if it is determined that the teleconverter is included, the processing flow moves to step #92. If the teleconverter is not included, the self mode is canceled regardless of whether it is in the self mode or not (#100). Remote control mode is also canceled. And the processing flow is #96
mode display, and the shooting mode at that time is the 6th mode.
It will be displayed as shown in the figure.

Note that the determination in step 98 as to whether or not the teleconverter is attached is made using the teleconverter switch S, which is switched by the teleconverter disposed near the photographic lens 12.
The judgment is made by turning on/off 11. Note that step 98
The reason why the AZ mode is switched to the normal mode when a teleconverter is installed is as follows. In cameras that do not have interchangeable lenses, to which this invention is applied, a front converter is generally used, which is large and heavy. Therefore, when zooming is performed under such conditions, the load on the zoom motor M becomes large and the zoom speed becomes slow. Therefore, it takes a long time for automatic zooming, and the time lag when pressing the release button becomes large, making it impossible to take a photograph with good timing.

Next, with reference to FIG. 14, a subroutine when the photographing mode switch S, 2 is on will be described. If the shooting mode switch S12 is on, it is first determined whether the camera is in self-mode or not (#110), and if it is self-mode, the mode is changed from self-mode to remote control mode (#11.2), and the mode is changed from self-mode to remote control mode (#11.2). If not, it is determined whether the mode is remote control mode (#113). If it is not in remote control mode, that is, in normal mode, self mode is set (#114), the shooting mode is changed from AZ mode or AZ temporary release mode to normal mode (#116), and the program moves to #118. . When in remote control mode, the remote control mode is changed to normal mode (#1.15), and the program moves to #118. The shooting mode in that state is displayed on the display LCD as shown in FIG. 6 (111
8). After that, the processing flow moves to the main routine.

Therefore, self mode and remote control mode and AZ
Duplicate settings of mode or AZ temporary release mode are not performed. However, it is possible to perform auto zoom in remote control mode.

FIG. 15 shows a subroutine when the zoom operation lever 14 shown in FIG. 2A is operated and either the zoom-in switch S4 or the zoom-out switch S is turned on. When either the zoom in switch S4 or the zoom out switch Ss is turned on, the shooting mode changes to A.
It is determined whether or not it is the Z mode (#120), and if it is the AZ mode, the photographing mode is switched from the AZ mode to the AZ temporary release mode (#122), and the mode is displayed (#124). After it is determined in step #120 that the mode is not in the AZ mode, or after the mode is displayed in step #124, it is determined whether the zoom-in switch S4 is on. If the zoom-in switch S4 is on, the driving direction of the photographic lens 12 is set to the telephoto direction (#134), and the stop position of the photographic lens 12 is set to the telephoto end (#136). If the zoom-in switch S4 is off, it is determined whether the zoom-out switch S is on.

If is on, it is an instruction to zoom out, so the driving direction of the photographic lens 12 is set to the wide direction (#1
30), the stop position of the photographic lens 12 is set to the wide end (#132). After the stop position of the photographic lens 12 is set to one of the above positions, the processing flow moves to a zooming subroutine (#138). Step #
If the zoom out switch S5 is turned off in step #128 or after zooming is completed in step #138, the processing flow returns to the main routine.

Note that if both the zoom-in switch S4 and the zoom-out switch Ss are off in steps #126 and #128, this is a case where an erroneous signal such as noise has been input. Further, the setting of the stop position of the photographing lens 12 is as shown in #34 and #40 in FIG.
The zoom position data is stored on the RAM of the control CPU as shown in FIG.

Next, the zooming subroutine will be explained with reference to FIG. When the zooming subroutine is called, the zoom position is first read (#140), and it is determined whether the photographing lens 12 has reached the telephoto end, wide end, or AZ stop position (#140). 14
2). When it is determined that the camera is not in the stop position, it will move to ZCW if it is in the telephoto direction depending on the driving direction of the photographic lens at that time.
A signal is output (#146), the zoom motor M1 is rotated in the forward direction, and if the driving direction is the wide direction, a ZCCW signal is output (#148), the zoom motor M is rotated in the reverse direction, and the zoom motor M1 is rotated in the reverse direction.
It is determined whether the mode is Z mode or not (#150). Step #
When it is determined in step 150 that the camera is in the AZ mode, it is determined whether the release switch S2 is on or not (#152), and if the release switch S2 is off, it is determined whether the photometry switch S is on or not. (#154). If the photometry switch S is turned on in step #154, the zoom position is read (#154), and it is determined whether the photographic lens 12 has reached the stop position (#158). Step #
If it is determined in step 150 that the mode is not AZ mode, it is determined whether the zoom-in switch S4 or the zoom-out switch S is on (#160), and if it is determined that the zoom-in switch S4 or zoom-out switch S is on, the processing flow proceeds to the zoom position reading subroutine (#160). #1
56). If it is determined in step #158 that the main switch SO is not at the stop position, it is determined whether or not the main switch SO is on. If it is determined that the main switch SO is on, the processing flow returns to step #150.

When it is determined in step #160 that the zoom switches S4 and S5 are not on, or when it is determined in step #162 that the main switch So is off (#1
62) applies a brake to the zoom motor M, so the processing flow moves to step #164. Step #1
52, when it is determined that the release switch S2 is on, the brake is applied to the zoom motor M (#17
2) Wait for 0.1 seconds (#174) and stop outputting the brake signal to the zoom motor M.#17
6) AE calculation is performed (#178). In this case, although the mode is AZ mode, the photographing lens 12 has not been moved to the original target position for photographing the subject, so the AE calculation is performed again at the zooming stop position. The reason why the AE calculation is performed again in this way is
This is because the aperture F value of the photographing lens 12 differs depending on the zoom position.

If it is determined in step #154 that the photometry switch S is not on, the processing flow moves to step #64 to apply a brake to the zoom motor M. That is, steps #150, #152, #154 and #16
4, when the photometry switch S1 is turned off even during zooming in AZ mode, the zoom motor N is immediately turned off.
The brake is applied to 1, and the activation and cancellation of autozoom is controlled by the user. Therefore, it is possible to provide an auto-zoom camera that allows the user to take pictures without feeling any discomfort since there is no difference in timing between camera operations and manual operations during photography.

In step #164, to brake the zoom motor M, the zcwSzccw signal is output because the motor is braked by setting both output signals to L as shown in Table 1. It's for a reason.

When the brake is applied to the zoom motor M, 0.
The brake is applied for one second (#1.66), and the drive of the zoom motor M is stopped (#168). Thereafter, the processing flow moves to an overrun check subroutine (#170) to check whether the photographic lens 12 has overrun a predetermined position.

Next, the photometry/distance measurement subroutine will be explained with reference to FIG. In the photometry/distance measurement subroutine, first, an AFES signal for turning on the photometry/distance measurement circuit is output (#180). Next, a serial communication clock SCK signal is output as an operating clock for A/D conversion (#182), and after a predetermined number of clocks have been output, a C81 signal is output to specify the data destination (#18).
4). Next, AFE is used to set photometry/distance data.
The S signal output is stopped (#186), and the SCK signal, which is a serial communication clock, is output (#188). AFED to read photometry and distance measurement data in synchronization with this
After the signal is input (#190) and reading of the photometry/distance measurement data is completed, the output of the C5I signal is stopped in order to turn off the photometry/distance measurement circuit (#192).

The signal timing and the like in the photometry/distance measurement operations described above will be explained with reference to FIG. 18. First, referring to (1) in FIG. 18, when the AFES signal becomes L, photometry and distance measurement are started. When the AFES signal becomes L, the SCK signal, which is the operating clock of the photometry/distance measurement circuit, generates 512 pulses per cycle in synchronization with this. During this time, A/D conversion of the photometer and distance measurement values is performed. And C8I
When the signal becomes L, the SCK pulse signal is synchronized and the AFED
is outputted to the control CPU 1 in the order of photometry data and distance measurement data. Both of these data are transferred as 8-bit serial data. For example, when photometric data (1) is output at the bottom of (1) in Figure 18, the pulse of the serial communication clock SCK and the AF output at that time
The relationship with ED is shown in an enlarged manner. Referring to the diagram of the AFED, one bit of photometric data is transmitted every cycle of the SCK signal. Details of the photometry data and distance measurement data are described in (2) of FIG. Referring to this figure, photometric data is 8-bit data, with the upper 5 bits representing an integer and the lower 3 bits representing a decimal. This data is a BV value and represents the brightness of the subject.

The distance measurement data is 8-bit data, or the lower 5 bits are used, and this distance data represents the distance to the subject using a predetermined zone number. FIG. 9 shows the relationship between the distance to the subject and the zone number that is the distance measurement data at that time.

FIG. 20 is a flowchart showing the subroutine of AZ calculation. Referring to FIG. 20, when the processing flow is transferred to the AZ calculation subroutine, filtering (#
200) is performed and a reference table is created (#
202).

This filtering is performed for the following purposes.

When auto zooming is performed continuously, the subject may move out of the distance measurement area. When the subject moves out of the distance measurement area in this way, the distance to the background is measured, resulting in a zoom state similar to when the subject is at infinity, and the zooming operation becomes less smooth. There is a high probability that this phenomenon will occur, especially when the subject is moving.

Therefore, by filtering the distance measurement data, distance measurement data that does not correspond to the subject distance is invalidated, and this is done in order to smooth the zooming operation.

As a method for this filtering, for example, if the same data is obtained multiple times, that data may be considered valid. In other words, if there is any sudden data among a plurality of consecutive data, that data is invalidated. However, this method cannot be applied when the subject is moving forward and backward relative to the camera. Another possible method is to compare the distance measurement data from the previous time, and if the difference is greater than a certain value, the current data is invalidated. The latter method has the advantage that even if the distance measurement circuit itself has an error of about ±1 zone in the distance data, such distance measurement error can be absorbed.

Next, the reference table will be explained. The reference table is a table for referring to the subject distance or the zoom stop position in the AZ mode.

An example of such a lookup table is shown in FIG. Referring to FIG. 21, the reference table includes table (1) and table (2). Table (1) is for referring to a predetermined parameter D from data in which distance data determined based on the subject distance shown in FIG. 19 is expressed by a zone number. This parameter D represents the actual distance in mm. The focal length f is determined by calculating the product of this parameter D and magnification data β determined in advance according to the photographing mode.

Data (2) represents the stop position of the photographing lens in the AZ mode as a zoom position based on the focal length Jlif which is the calculation result. Table (1) and table (2)
Both are created on the RAM of the control CPUI.

In remote control mode, the auto zoom subject magnification can be selected depending on the content of the received signal. Number of people photographed (1
(one person, two people, three people, many people), and the predetermined shooting magnification β is set in each mode.
have. For example, if the number of subjects is one, β-1/3
0, for 2 people it is β-1150, for 3 people it is β-1/70, and for many people it is β-1/120.
It has a predetermined imaging magnification β. The focal length f is calculated by calculating the product of this imaging magnification β and the parameter D. FIG. 22 shows an example of auto-zooming during remote control photography.

Returning to the AZ calculation routine in FIG. 20, after the focal length f corresponding to the stop position is determined (#204), the driving direction of the photographing lens is calculated (#206). The calculation of this driving direction is determined by comparing the current stop position of the photographing lens with the stop position corresponding to the obtained focal length f using the stop positions in table (2) shown in FIG. be done.

Next, the AE calculation subroutine will be explained.

FIG. 23 is a flowchart of the AE calculation subroutine. Referring to FIG. 23, in the AE calculation subroutine, it is first determined whether the shooting mode is the AZ mode (#210), and if it is the AZ mode, it is determined whether the release switch S2 is turned on or not. is determined (#224
), p, z mote or release switch S
If 2 is on, the zoom position will be read (#
212).

Note that the reason why it is determined in step #224 whether or not the release switch S2 is turned on is to determine whether or not photography is being performed with release priority.

After the zoom position is read in step #212, the aperture F value is determined. The reason why the aperture F value is determined after the zoom position is read in this way is that the aperture F value of the photographing lens 12 is different from the zoom position. Note that if the release switch S2 is off in step #224, A
The open F value is adopted at the stop position resulting from Z$11 (
#226), the processing flow moves to step #214. Incidentally, a table (3) showing the relationship between the zoom position and the open F value (AVo) is shown in FIG. Furthermore, the table (3
) is provided on the ROM or RAM of the control CPUI.

Next, returning to the AEa calculation subroutine, after determining the open F value, the ISO information is read (#216), the shutter control value is calculated (#218), the state of charge is read (#220), Other AE information is displayed in the finder (#222).

Figures 25A and 25B are step #216 in Figure 23.
FIG. 3 is a diagram specifically explaining the content of reading the SIO information described in FIG. The ISO sensitivity indicating the sensitivity of the film and the corresponding ISO code are as shown in FIG. 22A. The ISO sensitivity is expressed as an Sv value, and the Sv value for the ISO sensitivity is shown in parentheses next to the ISO sensitivity. Next, a method of converting an ISO code to an Sv value will be explained with reference to FIG. 25B. When ISO information is read, first the ISO code is read as the lower 3 bits of 8 bits. In this case, the data of the upper 5 bits is 1. This state is shown in No. 25B (1). Next, the data shown in (1) is inverted to become the data shown in FIG. 25B (2). 03H is added to this as shown in FIG. 25B (3) and converted to a film sensitivity value of 5V. This value corresponds to the numerical value shown in parentheses next to 150 sensitivity in the film sensitivity table shown in FIG. 25A. Next, the shutter control value calculation shown in step #218 in FIG. 23 will be explained. Shutter control EViliE
Vc is EVc-BV+Sv-(AVo(fx)-AV.

(f-38))...Represented by (1).

This shutter control EV value changes the zoom position to the focal length fx
This is the case when expressed as . Here, EVc: shutter control EV value Bv: photometric data representing subject brightness (see Figure 18) S: film sensitivity (see Figure 25) AV (f,): zoom position (focal side M) Open f-number AVo (“-38”) at f8mm: This is the open f-number when the focal length is 38 mm, that is, at the wide end.

In other words, control! Is the 1lEV value a comparison of the shooting lens at 12 or wide end? Display the IJEV value.

When the calculated EVc is smaller than EVT□, which is the threshold value for determining whether flash mode is selected, the photographing mode is automatically set to flash mode. The above is AEIt
It is L calculation.

Next, calculations in flash mode will be explained.

In the flash mode calculation, the shutter control (flash emission) AV value AVT in the flash mode is determined. The calculation formula is AVT-IV+Sv DV (AV (fx)-
AV (f-38)) ...(2). Here, IV: represents the flash illuminance, and is expressed as the logarithm of the guide number.

DV: represents the distance to the subject and is expressed as the logarithm of the distance.

Shutter control AV value in flash mode calculated as above or shutter control EVI calculated as below.
It will be converted into money.

EVc =F (AVT) - (3) where F() represents a function.

FIG. 26 is a flowchart showing the contents of the BriZoom subroutine. Here, BriZoom refers to the lens barrel 21
This refers to the operation to always reduce the play between the cam groove 31 and the pin 33 in the same direction.

FIG. 27 is a sectional view of the lens barrel section. Referring to FIG. 27, the lens barrel 21 is provided with a cam ring 32, and the cam ring 32 is provided with a cam groove 31. A pin 33 is moved along the cam groove 31 via a lens frame 34 provided on the outer periphery of the photographic lens 12 so that the photographic lens 12 is moved along the cam groove 31 to a predetermined focal length. Ru.

As shown in FIG. 27, the width of the pin 33 is smaller than the width of the cam groove 31. Therefore, depending on the moving direction of the photographing lens 12, there is a certain amount of play, and even if the lens barrel 21 is rotated by the zooming motor M1, the amount of rotation of the zooming motor M1 and the amount of movement of the photographing lens 12 are not proportional. (a) of FIG. 27 shows the positional relationship between the pin 33 and the cam groove 31 when the zoom direction is the wide direction, and (b)
) indicates the relationship when the zoom direction is the telephoto direction.

Referring to FIGS. 27(a) and 27(b), when the zoom direction is different, an error of Δd occurs in the lens position even at the same zoom position, and the optical performance deteriorates. Therefore, when the zoom direction in Fig. 27(a) is the wide direction, minute zooming is performed in the telephoto direction at the initial stage of release, and the zoom direction in Fig. 27(b) is always
By reducing the backlash in the same direction, the error Δd in the lens position at the same zoom position is virtually eliminated.

Returning to the flowchart of the brizoom shown in FIG.
Since it is necessary to perform a pre-zoom to eliminate the error of d, a ZCW signal is outputted to rotate the zoom motor M in the forward direction (#252). Next, a certain rotation time (Δ
T+) is secured (#254), zcw and zccw signals are output to brake the zoom motor M (#256), and after a predetermined braking time (ΔT2) is secured ((#258), The output of the zcw and zccw signals is stopped to turn off the zoom motor (#2
60). Note that if the previous zoom direction is the wide direction in step #250, there is no need to perform the pre-zoom, and the process flow returns as is.

Note that the braking time (ΔT2) is shorter than the time (ΔTs) required to actually stop the motor rotation. This is to keep the release time lag to the minimum necessary.

It's actually a zoom motor M.

is stopped during lens set (d), which will be explained later. Further, by configuring the drive power source with a constant voltage or constant current circuit, the amount of movement of the photographic lens 12 can be kept constant at all times.

FIG. 28 is a flowchart showing the focusing/exposure subroutine. Focusing and exposure are carried out by simply transmitting focus data and shutter control data to the shutter block 3 and outputting an STR signal instructing the start of focusing.

Referring to FIG. 28, in the focusing/exposure subroutine, the data output edge is first specified, and the C52 signal is output to turn on the shutter block (#2
28). Next, SCK, which is a clock signal for serial communication,
A signal is output (#282), focus data (lens set data), and shutter control data are output (128).
4) An STR signal is output for a command to start focusing (3286). Next, a predetermined time wait is performed until the exposure is completed (#288), and the output of the STR signal is stopped in order to turn off the shutter block 3 (#290).
, the output of the C52 signal is stopped (#292), and the LED display of the finder (not shown) is turned off (#294).
.

In the flash mode, the flash trigger signal TRG (see the electrical circuit diagram in Figure 5) is automatically output from the shutter block 3 to the flash block 5 by setting bit 7 (b7) of the shutter control data. be done.

Next, the zoom position reading subroutine will be explained. FIG. 29 is a flowchart showing the zoom position reading subroutine. Referring to FIG. 29, in the zoom position reading subroutine, a reference table (4) is first created (#300), a hexadecimal signal from the zoom encoder is read (1302), and the signal is used as an address to zoom The position data is accessed and the zoom position is determined (#304).

FIG. 30 is a diagram showing the zoom position reading reference table (4) described in step #300 of FIG. 29. 30th
Referring to the figure, the address is expressed using the lower 5 bits of 8 bits, and the address expressed as a 2-digit hexadecimal number corresponds to decimal zoom position data. Next, we will explain how to read this table by giving an example. For example, when 13H is read as a zoom encoder signal, zoom position data 8 (decimal) is obtained using this 13H as an address. In this case, the representative f value is 70 mm from the zoom encoder explanatory diagram of FIG. 4. Note that the fact that the zoom position data is 0 indicates that the zoom position data is impossible.

Then Oh! This section explains the lunch check subroutine. FIG. 31 is a flowchart showing the overrun check subroutine. In the case of overrun, if the camera is in photography mode or AZ mode, the photography lens is driven again until it reaches the target position, and if it is not in AZ mode, it is driven again only when it is at an irregular position. Note that the irregular position here means that the photographing lens 12 is located between the wide end and the retracted position.

In the overrun check subroutine, the zoom position is first read (#310), and it is determined whether the read zoom position is the stop position of the photographic lens 12 (#312), and if it is not the stop position, the AZ mode is selected. If it is not the AZ mode, it is determined whether the position is irregular (#316), and if the position is not irregular, the processing flow returns. Step #31
If the zoom position read in step 2 is the stop position, the process returns directly. When it is determined in step #314 that the mode is AZ mode, the driving direction is calculated from the stop position (#320) and zooming is performed (#322).
. When it is determined in step #316 that the position is irregular, the driving direction of the photographic lens 12 is set to the telephoto direction, since escaping from the irregular position is always by driving the lens in the telephoto direction (#318 ). After that, zooming is performed (#322).

Next, the driving direction calculation subroutine will be explained. Third
FIG. 2 is a flowchart of the driving direction calculation subroutine. Referring to FIG. 32, in the drive direction calculation subroutine, the zoom position is first read (#340).

Next, it is determined whether the zoom position is larger than the stop position by comparing the sizes of the numbers at the stop position (
#342). When it is determined that the zoom position is larger than the stop position, the driving direction is set to the telephoto direction (#344), and in the opposite case, the driving direction is set to the wide direction (#340). This drive direction is controlled by CP
Written on UIORAM.

FIG. 33 is a diagram for explaining the timing at the time of release when brizoom is performed.

Referring to FIG. 33, when release switch S2 is turned on, ZCW is activated to start normal rotation of zoom motor M1.
A signal is output, and then a zccw signal for stopping the zoom motor M1 is output. Zoom motor at this time ~1. The speed change is written next to M in FIG. 33. Referring to this figure, when the release switch S2 is turned on, the zoom motor M is rotated in response to the forward rotation start signal and the brake signal, and then the zoom motor M is stopped after undergoing inertia rotation. . The rotation start-up time is represented by (a), the braking period is represented by (b), and the inertial rotation period is represented by (c), as shown in the figure. When the BriZoom ends, a signal C52 designating the data transmission destination is output, and the signal is transmitted to the shutter block 3. In other words, serial communication clock SC
K is output, and in synchronization with this, a pressure signal 5HTD that outputs focus data and shutter control data is output.

After the focus data and shutter control data are output, a focusing start command signal STR signal is output. As a result, focusing shown in the lower part of FIG. 33 is started, and the lens is set for focusing. The period required for this lens set is, for example, about 150 msec,
This period is represented by (d). After focusing is completed,
The shutter is opened and closed. Before the shutter opens and closes, there is a lens stabilization period (e) to stabilize the lens.
is held, and then exposure (f) is performed. Referring to the focusing signal and the operation diagram of the zoom motor M1 in FIG. 33, the brizoom and the accompanying inertial rotation of the zoom motor M must be completed before the focusing is completed.

That is, the time represented by ΔT in the figure needs to be positive. Note that after the release switch S2 is turned on,
The release time lag until focusing is completed is about 0.4 seconds at most.

Next, the timing of transmitting data to the shutter block at the time of release shown in (e) and (g) of FIG. 33 will be explained. FIG. 34A is a diagram showing details of data transmission timing to the shutter block at the time of release. Referring to FIG. 34, when the signal C82 designating the data transmission destination to the shutter block is output, the serial communication block SCK is output in synchronization therewith. In response to each cycle of this serial communication clock SCK signal, 8-bit shutter data 5HTD is serially output in the order of focus data and shutter control data. After this focus data and shutter control data are output, a focusing start command signal STR is output. The contents of the shutter data 5HTD will be explained with reference to FIG. 34B. The shutter data 5HTD includes focus data and shutter control data EVc. Both the focus data and shutter control data EV0 are 8-bit data, but the focus data uses the lower 5 bits of the 8 bits, and the upper 3
The bit is set to zero. The shutter control data EVc indicates flash mode or non-flash mode by the most significant bit, the next 5 bits represent an integer, and the lower 2 bits represent a decimal. Note that when the most significant bit is 1, it represents flash mode, and when it is 0, it represents non-flash mode.

Next, details of the shutter control data EVc explained in FIG. 34B will be explained with reference to FIGS. 35A and 35B. FIG. 35A is a graph in which the aperture value (F value) is plotted on the Y axis and the shutter opening time is plotted on the X axis. Referring to FIG. 35A, the smaller the aperture value (F value), the longer the shutter opening time To becomes. The area of the triangle in FIG. 35A corresponds to the exposure amount.

FIG. 35B is a diagram showing an example of EV and values of shutter control data. Referring to FIG. 35B, once the shutter control data EVc value is determined, the corresponding shutter opening time To is determined. In this case, the shutter opening time To
is expressed in ms.

Next, another embodiment of the remote control shown in FIG. 2C will be described. FIG. 36 is a diagram showing a modified embodiment of the remote control device shown in FIG. 2C.

The remote control 30', which also serves as a lens cap, has a mark 30'a indicating the person's face to shoulder, a mark 30'c indicating the half of the body from the face to the copper, and a mark 30'd indicating the whole body. It is provided with push buttons S13', s15' and 816' arranged corresponding to each mark. This remote control 30' is configured such that when the push button 813' is pressed, the photographing magnification β of the camera body is set to 1/30, and when the push button 815' is pressed, the photographing magnification β is set to 1/7o.
When the push button 816' is pressed, respective remote control command signals are outputted so as to set the imaging magnification β to 1/120. The camera body operates the zoom motor M, depending on these remote control signals and the shooting distance to the subject.
and pushbuttons 813', 815' and 816'
When is pressed, the photographing lens 12 is driven so that the photographic magnification is 1/3o to photograph the subject's face to shoulders, the photographic magnification is 1/70 to photograph the half body, and the photographic magnification is 1/120 to photograph the whole body.

[Effects of the Invention] As described above, in the camera capable of auto-zoom shooting with the remote control according to the present invention, when the auto-zoom pause mode is in the auto-zoom pause mode and remote-control shooting is performed, even if the command for auto-zoom shooting is not issued by the remote control. Even if the camera is set, auto zoom shooting will not be performed. Therefore, in the auto-zoom temporary release mode, the auto-zoom mechanism does not operate even if an instruction for auto-zoom photography is issued using the remote control. As a result, it is possible to provide a camera having an auto-zoom mechanism that can prevent photographing errors due to unintentional changes in composition due to auto-zoom mode.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the main parts of this invention, and the second
Figures A to 2C are external views of the camera body to which this invention is applied, Figure 3 is a view showing the lens barrel of the photographing lens of the camera to which this invention is applied, and Figure 4 is a view of the zoom lens. FIG. 5 is an explanatory diagram of an encoder, and FIG. 5 is an electric circuit diagram of a camera capable of auto zoom and remote photography according to the present invention.
FIG. 6 is a diagram showing display segments of a display LCD,
FIG. 7 is a diagram showing the transition of the shooting mode of the camera capable of auto zoom and remote shooting according to the present invention;
FIG. 9 is a flowchart showing a main routine of a camera capable of auto zoom and remote shooting according to the present invention, FIG. 9 is a flowchart of a main switch So check routine, and FIG. 10A is a diagram showing remote control signals. FIG. 10B is a diagram showing remote control signal data and its contents, FIG. 11 is a flowchart showing a remote control determination subroutine, FIG. 12 is a flowchart of the photometry switch S, ON routine, and FIG. 14 is a flowchart showing the routine when the shooting mode switch is on; FIG. 15 is a flowchart showing the routine when the shooting mode switch is on;
FIG. 16 is a flowchart showing the zoom switch-on routine, FIG. 16 is a flowchart showing the zooming subroutine, FIG. 17 is a flowchart showing the photometry/distance measurement subroutine, and FIG. 18 is a flowchart showing the photometry/distance measurement signal timing. FIG. 19 is a diagram showing the relationship between subject distance and distance measurement data, and FIG.
21 is a flowchart of the calculation subroutine, FIG. 21 is a diagram showing the contents of AZ calculation, FIG. 22 is a diagram showing an example of auto zoom when shooting with a remote control, and FIG.
The figure is a flowchart showing the AE calculation subroutine, FIG. 24 is a table (3) showing the relationship between the zoom position and the aperture f-number, and FIGS. 25A and 25B show information on film sensitivity. 26 is a flowchart of the brizoom subroutine, FIG. 27 is a sectional view of the lens barrel, and FIG. 28 is a flowchart of the focusing/exposure subroutine. FIG. 29 is a flowchart of the zoom position reading subroutine, FIG. 30 is a diagram showing the zoom position reading reference table (4), FIG. 31 is a flowchart of the overrun error subroutine, and FIG. 32 is a flowchart of the zoom position reading subroutine. 33 is a flowchart showing the calculation subroutine, and FIG. 33 is a diagram showing the timing at the time of release;
34A and 34B are diagrams showing the data transmission timing to the shutter block at the time of release;
35B are diagrams showing specific examples of shutter control data, and FIG. 36 is a diagram showing a modified embodiment of the remote control. In the figure, 1 is the control unit 1ailcPU, 2 is the photometry/distance measurement circuit, 3 is the shutter block, 4 is the motor driver section, 5 is the flash block, 6 is the display section, 10 is the main switch operation lever 11 is the release button, and 12 is the shooting button. Lens, 13 is an auto zoom mode button, 14 is a zoom operation lever, 15 is a display LCD, 16 is a self mode button, 51 is a distance measuring means, 52 is a shooting magnification determining means, 5
3 is a remote control means, and 54 is an auto zoom function temporary release means. Figure 1 Figure 2A Figure lo-2 (In switch 4 Sugi 1 work Reno <- (So) Drelise ° Methane (SI, 5z) 2: a Shadow angle 13, Autozunim mode button (S3) 14: Sum stock 4 levers (54, 55) 1S, front LCD 16: Pre-photograph mode - dobutton (SIz) 30: Lens frame 32 mm, 7-point light reception, 4P Fig. 28 10A Figure 2C, $lOB Figure 3 2o411 part 21: 4L'I!: J 22: 7 Sim encode 23: 4j! ``γ?＞(56%-510)hM Near Komisikku 2-Evening 31:n Musei 33:c 41J H FF Figure 6 7 Figure 1 Figure 11 Figure 1z Figure 813 Figure Minute Figure 15 Figure 16 Figure 17 Figure 1B Figure 19 Figure 20 Figure 26 Figure 1) Figure 21 Poofen (2) Figure 2z (α) - People's Last Days (Rii 2 6 o'clock (C) Nibemeshi (d) 9th Grade Figure 23 Figure 24 Tefu no U Figure 25A Figure 25B ↓ v t L Muzo Floor Figure 27 32 ：Tōmu l1 34:3 Wait 35: Lens " Figure 28 Figure 29 Figure 30 Tenz Shikoku 4) Figure 31 Figure 32 Figure 3b Figure M2

Claims (1)

[Claims of Claims] A camera comprising: a distance measuring means for measuring the distance to a subject; a photographing lens capable of changing the focal length; and a photographing magnification selection means for selecting a photographing magnification when photographing the subject. The camera has an auto zoom function in which the focal length of the photographing lens is automatically set based on the subject distance obtained by the distance measuring means and the photographing magnification selected by the photographing magnification selection means. The camera is operated in an auto-zoom mode in which the auto-zoom function is activated and an auto-zoom temporary release mode in which the auto-zoom mode is temporarily canceled, and the camera further operates in an auto-zoom mode in which the auto-zoom function is activated remotely. and an automatic zoom function temporary release means for stopping the operation of the automatic zoom function when the camera is operated by the remote control means and is operated in the automatic zoom temporary release mode. A camera having an auto-zoom mechanism.