Flash photography system

Details Flash photography system Flash photography system

1983-10-24

1985-11-05

Adams, Russell E.

354422, G03B 700, G03B 1503

Patent

active

045509964

ABSTRACT:
A flash photography system using a first aperture value output calculated from a desired diaphragm aperture value for flash light photographing with data obtained from ambient light, film sensitivity and the exposure data, a second aperture value output independent of the light value of the ambient light, data selecting circuitry for outputting any one of the first aperture value output and the second aperture value output, an aperture controller for controlling the actual diaphragm aperture size from the output of the data selecting circuitry, and means for producing a stopping signal to stop the emission of the flash light when the flash light emission reaches a predetermined value.

REFERENCES:
patent: 4079385 (1978-03-01), Nattamura et al.
patent: 4187019 (1980-02-01), Uchiyama et al.
patent: 4188104 (1980-02-01), Uchiyama et al.
patent: 4319814 (1982-03-01), Iura et al.

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