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JPS5793328A - Photometric distribution switching device of camera - Google Patents

Photometric distribution switching device of camera

Info

Publication number
JPS5793328A
JPS5793328A JP55170622A JP17062280A JPS5793328A JP S5793328 A JPS5793328 A JP S5793328A JP 55170622 A JP55170622 A JP 55170622A JP 17062280 A JP17062280 A JP 17062280A JP S5793328 A JPS5793328 A JP S5793328A
Authority
JP
Japan
Prior art keywords
filter
switching
distribution
photometry
photometric
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
JP55170622A
Other languages
Japanese (ja)
Inventor
Susumu Matsumura
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 JP55170622A priority Critical patent/JPS5793328A/en
Priority to US06/326,284 priority patent/US4445764A/en
Publication of JPS5793328A publication Critical patent/JPS5793328A/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
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09979—Multi-zone light measuring
    • 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
    • G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
    • G03B7/0997—Through the lens [TTL] measuring
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09972—Through the lens [TTL] measuring in mirror-reflex cameras using the mirror as sensor light reflecting or transmitting member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Control For Cameras (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

PURPOSE:To make a device inexpensive, by placing an optical system in an incident optical path of a photodetector, also placing a filter on an image forming position of the optical system, switching the filter, and switching the photometric distribution. CONSTITUTION:At the time of photometry, a transmission light beam of a photographing lens 1 is reflected by one or both of a shutter screen 3 and a film 4, and its reflected ray is detected photometrically by an optical detector 10 through an image formation lens and a filter 9. In this case, the image formation lens 8 forms or nearly forms a shutter screen surface and a film surface on the filter, and this formed image is photometrically detected by the optical detector 10. This filter 9 switches the photometric function by arraying element filters whose tansmittivity distribution is different, in accordance with the photometric function such as partial photometry, mean photometry, etc. and switching each element filter, or switches the photometric function by varying the transmittivity distribution of the filter.
JP55170622A 1980-12-02 1980-12-02 Photometric distribution switching device of camera Pending JPS5793328A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55170622A JPS5793328A (en) 1980-12-02 1980-12-02 Photometric distribution switching device of camera
US06/326,284 US4445764A (en) 1980-12-02 1981-12-01 Light measuring device for a single lens reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55170622A JPS5793328A (en) 1980-12-02 1980-12-02 Photometric distribution switching device of camera

Publications (1)

Publication Number Publication Date
JPS5793328A true JPS5793328A (en) 1982-06-10

Family

ID=15908281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55170622A Pending JPS5793328A (en) 1980-12-02 1980-12-02 Photometric distribution switching device of camera

Country Status (1)

Country Link
JP (1) JPS5793328A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007047713A (en) * 2005-08-12 2007-02-22 Canon Inc Imaging apparatus and its control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007047713A (en) * 2005-08-12 2007-02-22 Canon Inc Imaging apparatus and its control method

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