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 correcteInfo
- 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
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
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)
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)
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)
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 |
-
1978
- 1978-01-11 JP JP165378A patent/JPS5495232A/ja active Granted
-
1979
- 1979-01-05 FR FR7900209A patent/FR2414741A1/fr active Granted
- 1979-01-08 GB GB7900536A patent/GB2014746B/en not_active Expired
- 1979-01-09 DE DE2900606A patent/DE2900606C2/de not_active Expired
-
1982
- 1982-05-26 US US06/381,944 patent/US4392728A/en not_active Expired - Fee Related
Patent Citations (2)
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 |