FR2447047B1 - - Google Patents
Info
- Publication number
- FR2447047B1 FR2447047B1 FR7900978A FR7900978A FR2447047B1 FR 2447047 B1 FR2447047 B1 FR 2447047B1 FR 7900978 A FR7900978 A FR 7900978A FR 7900978 A FR7900978 A FR 7900978A FR 2447047 B1 FR2447047 B1 FR 2447047B1
- Authority
- FR
- France
- 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.)
- Expired
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
- G03B7/091—Digital circuits
- G03B7/093—Digital circuits for control of exposure time
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- 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
- G03B7/16—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly in accordance with both the intensity of the flash source and the distance of the flash source from the object, e.g. in accordance with the "guide number" of the flash bulb and the focusing of the camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Stroboscope Apparatuses (AREA)
- Exposure Control For Cameras (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7900978A FR2447047A1 (fr) | 1979-01-16 | 1979-01-16 | Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7900978A FR2447047A1 (fr) | 1979-01-16 | 1979-01-16 | Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2447047A1 FR2447047A1 (fr) | 1980-08-14 |
| FR2447047B1 true FR2447047B1 (US08063081-20111122-C00115.png) | 1982-05-14 |
Family
ID=9220799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7900978A Granted FR2447047A1 (fr) | 1979-01-16 | 1979-01-16 | Circuit de commande du temps d'exposition pour un appareil photographique muni d'une lampe-eclair |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2447047A1 (US08063081-20111122-C00115.png) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2520449B2 (de) * | 1974-05-08 | 1979-10-11 | Canon K.K., Tokio | Kamera zur Verwendung mit einem elektronischen Blitzlichtgerät |
| US4079385A (en) * | 1974-09-20 | 1978-03-14 | Canon Kabushiki Kaisha | Camera system |
| JPS53106031A (en) * | 1977-02-28 | 1978-09-14 | Asahi Optical Co Ltd | Strobo luminous control device using light measuring circuit for focal plane shutter type camera |
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1979
- 1979-01-16 FR FR7900978A patent/FR2447047A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2447047A1 (fr) | 1980-08-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |