Strobo controlling apparatus
US5255047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1992 |
| Grant date | Oct 19, 1993 |
| Priority date | — |
| Expiry date | Aug 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a strobe controlling apparatus, there are provided respective information outputs for outputting respectively the guide number information GV, film sensitivity information SV and object distance information DV, a judged diaphragm value is determined by the operation of GV+SV-DV from their outputs, the above-mentioned diaphragm value is compared with a predetermined value memorized in advance, in case the above-mentioned diaphragm value is smaller, the diaphragm will be controlled and, in case the above-mentioned diaphragm value is larger, the flash amount will be controlled so that, particularly, at the time of strobe photographing, the short distance exposure may be prevented from being over-exposed and a proper exposure is made possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.