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JPS57132122A - Diaphragm and shutter prioirity camera - Google Patents

Diaphragm and shutter prioirity camera

Info

Publication number
JPS57132122A
JPS57132122A JP56208905A JP20890581A JPS57132122A JP S57132122 A JPS57132122 A JP S57132122A JP 56208905 A JP56208905 A JP 56208905A JP 20890581 A JP20890581 A JP 20890581A JP S57132122 A JPS57132122 A JP S57132122A
Authority
JP
Japan
Prior art keywords
diaphragm
shutter
priority
time
switch
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
JP56208905A
Other languages
Japanese (ja)
Inventor
Yukio Mashita
Fumio Ito
Tadashi Ito
Masanori Uchitoi
Masayoshi Yamamichi
Tokuichi Tsunekawa
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 JP56208905A priority Critical patent/JPS57132122A/en
Publication of JPS57132122A publication Critical patent/JPS57132122A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/081—Analogue circuits
    • G03B7/087—Analogue circuits for control of both exposure time and aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE:To realize the control of exposure with simple circuit constitution, by performing automatic exposure control with priority of a specific diaphragm value when both the diaphragm and shutter second-time setting means are set at a specific position, respectively. CONSTITUTION:An automatic exposure controlling camera can selectively switch the exposure control mode between the shutter second-time priority and the diaphragm priority. In case both the shutter dial and the diaphragm preset ring are set at the AUTO mark, the signals sent from priority signal sources TA and AA are applied to an analog switch AS4 via a gate G23. Then the terminal of the switch AS4 is switched to (b) from (a), and accordingly the signal applied from a diaphragm input means AROM to which the diaphragm value having a high using frequency is set is supplied to an adder ADD1. Based on this diaphragm value, the shutter second time is automatically controlled.
JP56208905A 1981-12-23 1981-12-23 Diaphragm and shutter prioirity camera Pending JPS57132122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56208905A JPS57132122A (en) 1981-12-23 1981-12-23 Diaphragm and shutter prioirity camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56208905A JPS57132122A (en) 1981-12-23 1981-12-23 Diaphragm and shutter prioirity camera

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP49147842A Division JPS5173439A (en) 1974-10-07 1974-12-23

Publications (1)

Publication Number Publication Date
JPS57132122A true JPS57132122A (en) 1982-08-16

Family

ID=16564062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56208905A Pending JPS57132122A (en) 1981-12-23 1981-12-23 Diaphragm and shutter prioirity camera

Country Status (1)

Country Link
JP (1) JPS57132122A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410959A1 (en) * 1973-03-07 1974-09-12 Canon Kk ELECTRONIC EXPOSURE CONTROL

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410959A1 (en) * 1973-03-07 1974-09-12 Canon Kk ELECTRONIC EXPOSURE CONTROL

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