Exposure control apparatus and photographing lens in camera
US5126780A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1990 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | May 30, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure control apparatus of a camera having a memory on a photographing lens for storing lens information of the photographing lens. A lens information input device is provided on the camera body to which the photographing lens is mounted, for inputting the lens information stored in the memory. The memory has optimum diaphragm data which is determined in accordance with a predetermined specific condition of the photographing lens and which is stored in the memory as the lens information. The camera body includes an exposure operating device which arithmetically sets an exposure parameter based on the optimum diaphragm data which is input to the camera body through the lens information inputting device from the memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.