Camera system
US4717934A · kind A · utility
13Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1985 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Dec 30, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/17
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera system capable of performing flash photography is arranged to perform pre-flashing to detect beforehand the quantity of flash light to be obtained by main flashing. The system makes a display to show whether the flash light quantity thus detected assures an adequate exposure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.