Automatic film sensitivity setting system for camera

Details Automatic film sensitivity setting system for camera Automatic film sensitivity setting system for camera

1979-06-19

1981-06-02

Gellner, Michael L.

354 51, G03B 783

Patent

active

042708516

ABSTRACT:
In an electric shutter control circuit capable of properly controlling exposure in response to information concerning exposure parameters, such as subject brightness, the trigger level of the switching circuit controlling the exposure operation is automatically set in proportion to the sensitivity of the film being used by using a specific conductive part provided on the outer surface of the film holder so that the exposure is properly controlled according to the sensitivity of the film loaded in the camera.

REFERENCES:
patent: 3667363 (1972-06-01), Tanaka
patent: 3690232 (1972-09-01), Kodaira et al.
patent: 4200371 (1980-04-01), Suzuki et al.

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