FR832921A - Device for automatic adjustment, by means of a photocell, of the shutter speed and the aperture of the diaphragm in photographic cameras - Google Patents
Device for automatic adjustment, by means of a photocell, of the shutter speed and the aperture of the diaphragm in photographic camerasInfo
- Publication number
- FR832921A FR832921A FR832921DA FR832921A FR 832921 A FR832921 A FR 832921A FR 832921D A FR832921D A FR 832921DA FR 832921 A FR832921 A FR 832921A
- Authority
- FR
- France
- Prior art keywords
- photocell
- diaphragm
- aperture
- shutter speed
- automatic adjustment
- 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.)
- 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
- G03B7/12—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 a hand-actuated member moved from one position to another providing the energy to move the setting member, e.g. depression of shutter release button causes a stepped feeler to co-operate with the pointer of the light-sensitive device to set the diaphragm and thereafter release the shutter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR832921T | 1937-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR832921A true FR832921A (en) | 1938-10-06 |
Family
ID=9296274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR832921D Expired FR832921A (en) | 1937-05-27 | 1937-05-27 | Device for automatic adjustment, by means of a photocell, of the shutter speed and the aperture of the diaphragm in photographic cameras |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR832921A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1245717B (en) * | 1959-03-25 | 1967-07-27 | Prontor Werk Gauthier Gmbh | Photographic camera with adjustable setting device for aperture and time in the sense of a uniform exposure value graduation |
-
1937
- 1937-05-27 FR FR832921D patent/FR832921A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1245717B (en) * | 1959-03-25 | 1967-07-27 | Prontor Werk Gauthier Gmbh | Photographic camera with adjustable setting device for aperture and time in the sense of a uniform exposure value graduation |
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