JPS57172332A - Dimming confirmation system using focusing detector - Google Patents

Dimming confirmation system using focusing detector

Info

Publication number
JPS57172332A
JPS57172332A JP56058175A JP5817581A JPS57172332A JP S57172332 A JPS57172332 A JP S57172332A JP 56058175 A JP56058175 A JP 56058175A JP 5817581 A JP5817581 A JP 5817581A JP S57172332 A JPS57172332 A JP S57172332A
Authority
JP
Japan
Prior art keywords
unit
light
luminous flux
dimming
detection
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
JP56058175A
Other languages
Japanese (ja)
Inventor
Mitsuya Hosoe
Takao Kinoshita
Masayoshi Yamamichi
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 JP56058175A priority Critical patent/JPS57172332A/en
Priority to US06/368,433 priority patent/US4429966A/en
Priority to DE19823214063 priority patent/DE3214063A1/en
Publication of JPS57172332A publication Critical patent/JPS57172332A/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
    • G03B7/099—Arrangement of photoelectric elements in or on the camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stroboscope Apparatuses (AREA)
  • Indication In Cameras, And Counting Of Exposures (AREA)
  • Automatic Focus Adjustment (AREA)
  • Exposure Control For Cameras (AREA)
  • Focusing (AREA)

Abstract

PURPOSE:To confirm the operation state of an illuminating means, by leading a part of the luminous flux, which comes from an object during the exposure of a film, onto a photoelectric converter of a focusing detector to detect the reflection luminous flux. CONSTITUTION:For example, a photodetecting unit 31 is provided in a single- lens reflex camera main body 25, and the unit 31 receives the incident luminous flux of a lens 24 through a quick return mirror 27a and is used for the detection of the focusing state. Further, the unit 31 is constituted so as to receive the reflection light from a film 34 through a small mirror 39 at an exposure time. When the dimming confirmation mode is set and a flash 40 emits the light, an electric charge corresponding to the quantity of light emission is integrated in a signal processing circuit 32 in respect to the detection light of the unit 31, and the state of the operation of an illuminating means is displayed on a basis of the integration holding value. Thus, the photodetecting unit for focus detection is switched and used to confirm the dimming.
JP56058175A 1981-04-16 1981-04-17 Dimming confirmation system using focusing detector Pending JPS57172332A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56058175A JPS57172332A (en) 1981-04-17 1981-04-17 Dimming confirmation system using focusing detector
US06/368,433 US4429966A (en) 1981-04-16 1982-04-14 Camera with photoelectric focus detecting device
DE19823214063 DE3214063A1 (en) 1981-04-16 1982-04-16 CAMERA WITH A PHOTOELECTRIC FOCUS DETECTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56058175A JPS57172332A (en) 1981-04-17 1981-04-17 Dimming confirmation system using focusing detector

Publications (1)

Publication Number Publication Date
JPS57172332A true JPS57172332A (en) 1982-10-23

Family

ID=13076655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56058175A Pending JPS57172332A (en) 1981-04-16 1981-04-17 Dimming confirmation system using focusing detector

Country Status (1)

Country Link
JP (1) JPS57172332A (en)

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