Method and apparatus employing dual photocells for removing spec

Details Method and apparatus employing dual photocells for removing spec Method and apparatus employing dual photocells for removing spec

1979-12-31

1985-01-01

Perkey, William B.

354429, 354436, 354482, G03B 7087, G03B 7099, G03B 1505

Patent

active

044914067

ABSTRACT:
Method and apparatus for automatically switching between alternate ones of a pair of light sensing photocells having different photoresponsive characteristics in an exposure control system usable with a photographic apparatus. Included in the system is a light integrating circuit responsive to a first one of the photocells until commencement of a flash mode and then to the other until termination of such flash mode at which time the circuit is again responsive to the first photocell.

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