Strobo controlling apparatus

Details Strobo controlling apparatus Strobo controlling apparatus

1992-08-17

1993-10-19

Perkey, W. B.

354421, 354422, 354137, G03B 1505

Patent

active

052550478

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.

REFERENCES:
patent: 4058818 (1977-11-01), Johnson et al.
patent: 4494850 (1985-01-01), Katsuma et al.
patent: 4771309 (1988-09-01), Ogihara et al.
patent: 4806963 (1989-02-01), Kobayashi et al.

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