Device for indicating photographic exposure conditions

Details Device for indicating photographic exposure conditions Device for indicating photographic exposure conditions

1981-06-10

1983-02-08

Perkey, William B.

354 60L, 354128, 354289, G03B 1720, G03B 726, G03B 1505, G03B 1302

Patent

active

043726577

ABSTRACT:
In a camera, a device for indicating photographic exposure conditions in which an electrooptic element or window is incorporated in a finder system in such a way that when exposure conditions such as the brightness of an object, the conditions of a battery and the condition of an electronic flash device are unsatisfactory so that an erratic exposure will result, the electrooptic element or window is rendered opaque totally or intermittently so that the image of an object cannot be viewed or is hardly viewed.

REFERENCES:
patent: 4021828 (1977-05-01), Iura et al.
patent: 4152846 (1979-05-01), Witt

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