Exposure time control device for an electric shutter in a single

Details Exposure time control device for an electric shutter in a single Exposure time control device for an electric shutter in a single

1975-06-13

1977-08-02

Adams, Russell E.

354 50, 354 51, 354 60R, G03B 708

Patent

active

040400689

ABSTRACT:
A control device for controlling the exposure time automatically for an electric shutter, in a single reflex camera of the so-called "through the lens" photometric type which determines the brightness of an object by means of the light past through the projection lens of a camera.

REFERENCES:
patent: 3670637 (1972-06-01), Mori et al.
patent: 3852774 (1974-12-01), Taguchi et al.

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