GB943412A - Improvements in or relating to photographic cameras - Google Patents
Improvements in or relating to photographic camerasInfo
- Publication number
- GB943412A GB943412A GB1233960A GB1233960A GB943412A GB 943412 A GB943412 A GB 943412A GB 1233960 A GB1233960 A GB 1233960A GB 1233960 A GB1233960 A GB 1233960A GB 943412 A GB943412 A GB 943412A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aperture
- masking member
- exposure
- april
- shutter speed
- 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
- G03B7/081—Analogue circuits
- G03B7/085—Analogue circuits for control of aperture
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
Abstract
943,412. Photographic cameras. KODAK Ltd. April 7, 1960 [April 8, 1959] No. 12339/60. Heading G2A. In a photographic camera provided with an exposure meter connected to a masking member having an aperture of varying width for automatically adjusting the effective area of the exposure aperture as a function of the intensity of the light illuminating a scene to be photographed, a separate manually operable ma sking means providing an aperture in alignment with the aperture of the first masking member and serving to vary the amount of light passing through the exposure aperture as a function of the shutter speed and/or film sensitivity is provided. In one embodiment Fig. 1 a toothed sector 1, connected to the movable frame 2 of a galvanometer energized by a photo-cell, engages a masking member 4 having a variablewidth aperture 5; manually operable disc 8 has an aperture 9 and carries a shutter speed scale 11. The apertures may be stepped, Fig. 2 (not shown). Member 4 may be directly carried by frame 2, Figs. 3, 4, 5 (none shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR791560A FR1231172A (en) | 1959-04-08 | 1959-04-08 | Camera with automatic exposure adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB943412A true GB943412A (en) | 1963-12-04 |
Family
ID=8713424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1233960A Expired GB943412A (en) | 1959-04-08 | 1960-04-07 | Improvements in or relating to photographic cameras |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1231172A (en) |
| GB (1) | GB943412A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866129A1 (en) * | 2004-02-05 | 2005-08-12 | Quantificare | Object surface calibrated view capturing device for tracking cutaneous cancer, has frame affixed on surface of object and including hollow aperture to view surface, and mirror system aligning frame apexes with apexes of photographic image |
-
1959
- 1959-04-08 FR FR791560A patent/FR1231172A/en not_active Expired
-
1960
- 1960-04-07 GB GB1233960A patent/GB943412A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866129A1 (en) * | 2004-02-05 | 2005-08-12 | Quantificare | Object surface calibrated view capturing device for tracking cutaneous cancer, has frame affixed on surface of object and including hollow aperture to view surface, and mirror system aligning frame apexes with apexes of photographic image |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1231172A (en) | 1960-09-27 |
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