FR2414741A1 - Appareil de prise de vues a systeme de mesure de lumiere par reflexion pour determiner l'exposition correcte - Google Patents

Appareil de prise de vues a systeme de mesure de lumiere par reflexion pour determiner l'exposition correcte

Info

Publication number
FR2414741A1
FR2414741A1 FR7900209A FR7900209A FR2414741A1 FR 2414741 A1 FR2414741 A1 FR 2414741A1 FR 7900209 A FR7900209 A FR 7900209A FR 7900209 A FR7900209 A FR 7900209A FR 2414741 A1 FR2414741 A1 FR 2414741A1
Authority
FR
France
Prior art keywords
photography
correct exposure
measuring system
reflection light
light measuring
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.)
Granted
Application number
FR7900209A
Other languages
English (en)
Other versions
FR2414741B1 (fr
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.)
Olympus Corp
Original Assignee
Olympus Optical Co Ltd
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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Publication of FR2414741A1 publication Critical patent/FR2414741A1/fr
Application granted granted Critical
Publication of FR2414741B1 publication Critical patent/FR2414741B1/fr
Granted 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
    • G03B7/09971—Through the lens [TTL] measuring in mirror-reflex cameras
    • G03B7/09974—Through the lens [TTL] measuring in mirror-reflex cameras using the film or shutter as sensor light reflecting member

Landscapes

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

Abstract

Appareil de prise de vues qui comprend un obturateur plan focal comportant un rideau frontal et un rideau postérieur pour mesurer la lumière réfléchie par la surface du rideau frontal afin de déterminer l'exposition correcte, cet appareil étant caractérisé en ce que ledit rideau frontal comprend une partie centrale à faible pouvoir réflecteur et une partie d'extrémité postérieure, au moins, présentant un pouvoir réflecteur élevé comparativement à la partie centrale, en considérant le sens du déplacement du rideau frontaL
FR7900209A 1978-01-11 1979-01-05 Appareil de prise de vues a systeme de mesure de lumiere par reflexion pour determiner l'exposition correcte Granted FR2414741A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP165378A JPS5495232A (en) 1978-01-11 1978-01-11 Camera

Publications (2)

Publication Number Publication Date
FR2414741A1 true FR2414741A1 (fr) 1979-08-10
FR2414741B1 FR2414741B1 (fr) 1985-02-15

Family

ID=11507470

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7900209A Granted FR2414741A1 (fr) 1978-01-11 1979-01-05 Appareil de prise de vues a systeme de mesure de lumiere par reflexion pour determiner l'exposition correcte

Country Status (5)

Country Link
US (1) US4392728A (fr)
JP (1) JPS5495232A (fr)
DE (1) DE2900606C2 (fr)
FR (1) FR2414741A1 (fr)
GB (1) GB2014746B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57155521A (en) * 1981-03-20 1982-09-25 Canon Inc Photometric device of camera
JPS5828827U (ja) * 1981-08-18 1983-02-24 オリンパス光学工業株式会社 カメラの反射測光装置
JPH06138517A (ja) * 1992-09-10 1994-05-20 Nikon Corp フォーカルプレーンシャッタの分割羽根およびスリット形成羽根
JPH06347863A (ja) * 1993-06-08 1994-12-22 Nikon Corp フォーカルプレーンシャッター
JP2001021938A (ja) * 1999-07-07 2001-01-26 Konica Corp カメラ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1581805A (fr) * 1968-08-08 1969-09-19
FR2307285A1 (fr) * 1974-07-02 1976-11-05 Olympus Optical Co Appareil photometrique pour camera reflex a objectif unique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4064517A (en) * 1974-07-02 1977-12-20 Olympus Optical Co., Ltd. Photometric apparatus for single lens reflex camera
JPS5722168Y2 (fr) * 1977-02-24 1982-05-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1581805A (fr) * 1968-08-08 1969-09-19
FR2307285A1 (fr) * 1974-07-02 1976-11-05 Olympus Optical Co Appareil photometrique pour camera reflex a objectif unique

Also Published As

Publication number Publication date
JPS5724897B2 (fr) 1982-05-26
GB2014746A (en) 1979-08-30
DE2900606C2 (de) 1982-12-23
GB2014746B (en) 1982-03-31
FR2414741B1 (fr) 1985-02-15
JPS5495232A (en) 1979-07-27
US4392728A (en) 1983-07-12
DE2900606A1 (de) 1979-07-19

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Legal Events

Date Code Title Description
ST Notification of lapse