Automatic exposure control system

Details Automatic exposure control system Automatic exposure control system

1975-01-02

1976-08-17

Hix, L. T.

354 59, 354196, G03B 714

Patent

active

039757447

ABSTRACT:
A photographic exposure control system which automatically functions in an ambient mode of operation, in response to scene light values and in a flash mode of operation, in response to both scene light values and scene ranging, the latter providing select aperture values in accordance with anticipated flash illumination of the scene, includes a trim mechanism providing operator variation of the automatic settings for both the ambient and flash modes of operation. The trim arrangement provides a single control which alters both the photoresponse of the system and the selection of aperture with scene ranging so as to modify only the photoresponse for ambient operation and both the photoresponse and the scene ranging response for the flash illumination mode.

REFERENCES:
patent: 3832722 (1974-08-01), Douglas

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