JPS5511294A - Exposure control device in camera - Google Patents

Exposure control device in camera

Info

Publication number
JPS5511294A
JPS5511294A JP8516979A JP8516979A JPS5511294A JP S5511294 A JPS5511294 A JP S5511294A JP 8516979 A JP8516979 A JP 8516979A JP 8516979 A JP8516979 A JP 8516979A JP S5511294 A JPS5511294 A JP S5511294A
Authority
JP
Japan
Prior art keywords
aperture
information
specified
value
photographing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8516979A
Other languages
Japanese (ja)
Inventor
Yukio Iura
Masayoshi Yamamichi
Takashi Uchiyama
Tetsuya Taguchi
Yukio Mashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP8516979A priority Critical patent/JPS5511294A/en
Publication of JPS5511294A publication Critical patent/JPS5511294A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Control For Cameras (AREA)
  • Stroboscope Apparatuses (AREA)

Abstract

PURPOSE: To obtain proper exposure even in case of breaking accident of aperture information, by controlling the aperture opening on the basis of specified aperture information stored in aperture information memory circuit for regular photographing, at the time of flash photographing.
CONSTITUTION: A control device comprises operational amplifiers OP1 to OP3, a variable resistor for information setting Ro which moves in response to ASA information, and condenser for memory Cr. At the time of flash photographing, by installing a flash device Fo of which specified aperture value is set by resistors r1 to r3, the specified aperture value to give a proper exposure automatically appears in the output of the operational amplifier OP3, and photograph is taken at the corresponding aperture opening. Therefore, since the aperture is automatically adjusted to the specified value and the trouble of setting is eliminated and the information is stored in the condenser Cr at the same time, an appropriate aperture value may be obtained even if the aperture information is interrupted due to defective connection.
COPYRIGHT: (C)1980,JPO&Japio
JP8516979A 1979-07-05 1979-07-05 Exposure control device in camera Pending JPS5511294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8516979A JPS5511294A (en) 1979-07-05 1979-07-05 Exposure control device in camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8516979A JPS5511294A (en) 1979-07-05 1979-07-05 Exposure control device in camera

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49036794A Division JPS50129224A (en) 1974-04-01 1974-04-01

Publications (1)

Publication Number Publication Date
JPS5511294A true JPS5511294A (en) 1980-01-26

Family

ID=13851151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8516979A Pending JPS5511294A (en) 1979-07-05 1979-07-05 Exposure control device in camera

Country Status (1)

Country Link
JP (1) JPS5511294A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907059A1 (en) * 1968-02-13 1969-10-02 Lumina Sprl Device for controlling capacitor discharge pulses
JPS4885135A (en) * 1972-02-14 1973-11-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907059A1 (en) * 1968-02-13 1969-10-02 Lumina Sprl Device for controlling capacitor discharge pulses
JPS4885135A (en) * 1972-02-14 1973-11-12

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