Flash photography system

Details Flash photography system Flash photography system

1983-02-28

1985-01-01

Perkey, William B.

354459, 354471, 3541271, G03B 1505

Patent

active

044914040

ABSTRACT:
There is provided a flash photography system which allows control of a relation between a light emission duration of a flash device and a full-open time of an exposing aperture of a focal plane shutter in an ideal condition. In the system, an electronic flash device comprises circuitry for producing an output representing the maximum discharge time period of illumination light and circuitry for transmitting the output to a camera when the flash device is coupled to the camera.

REFERENCES:
patent: 3710701 (1973-01-01), Takishima et al.
patent: 4176933 (1979-12-01), Watanabe
patent: 4304478 (1981-12-01), Katayama et al.
patent: 4367932 (1983-01-01), Ishikawa et al.
patent: 4425033 (1984-01-01), Yukio et al.

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