Method and apparatus for controlling exposure by selective...

Details Method and apparatus for controlling exposure by selective... Method and apparatus for controlling exposure by selective...

G - Physics

03

B

95/53.5

G03B 7/08 (2006.01) G03B 7/16 (2006.01)

Patent

CA 1149662

6243 ABSTRACT OF THE DISCLOSURE Method and apparatus for automatically controlling exposure of a photographic film by evaluating selected spectral scene light frequencies during certain ambient light portions of an exposure interval and evaluating scene light frequencies exclusive of visible frequencies during other portions of the interval.

367722

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