Automatic exposure control apparatus for single lens reflex camera
US4582412A · kind A · utility
8Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1985 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Jul 29, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/097
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An automatic exposure control apparatus for single lens reflex camera on which can be mounted either a lens adaptable for the automatic aperture control mode or a lens adaptable for the manual aperture control mode irrespective of the mode now being selected for the camera, can detect the type of the mounted lens and, when the mounted lens is of the type adaptable for the manual aperture control mode, it makes the camera forcedly select the manual aperture control mode as the exposure control mode thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.