Automatic flash-photographing arrangement

Details Automatic flash-photographing arrangement Automatic flash-photographing arrangement

1975-06-11

1976-08-31

Adams, Jr., Russell E.

354 34, 354 60F, 354139, 354149, G03B 716

Patent

active

039784967

ABSTRACT:
An automatic flash-photographing arrangement whereby flash-photography is automatically carried out at a preset shutter speed when brightness of an object is lower than a pre-determined value, the arrangement comprising an automatic exposure control circuit, an electronic change-over switch means connected to said automatic exposure control circuit, and a flash illuminating circuit connected to said change-over switch means. The electronic change-over switch means comprises an adjustable RC delay circuit which can be set for the purpose of determining whether or not flash-photography has to be carried out.

REFERENCES:
patent: 3654843 (1972-04-01), Ueda et al.
patent: 3667357 (1972-06-01), Matsuda
patent: 3690237 (1972-09-01), Fuwa
patent: 3699858 (1972-10-01), Ogiso et al.
patent: 3757654 (1973-09-01), Mori
patent: 3805278 (1974-04-01), Matsuzaki et al.

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