Optimized flash exposure

Details Optimized flash exposure Optimized flash exposure

1976-04-05

1977-08-02

Gonzales, John

354 49, 354126, 354195, G03B 708, G03B 1504

Patent

active

040400700

ABSTRACT:
A camera adapted to make exposures of a scene illuminated by substantially constant or transient (flash) light includes exposure control apparatus having a photosensor to effect an exposure of duration related to the intensity of the light, a focus control and first and second light attenuating elements mounted to be selectively positioned in and out of the optical path of the photosensor. The attenuating elements are biased to move toward the optical path; and for exposures in substantially constant light, the first attenuating element is held out of the optical path. For exposures in flash light, the first attenuating element is positioned within the optical path while the second attenuating element is moved out of the optical path while the second attenuating element is released to move into the optical path to an extent determined by the focus control.

REFERENCES:
patent: 3205802 (1965-09-01), Wareham
patent: 3455218 (1969-07-01), Eagle et al.

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