Method and apparatus for selective positioning of spectral filte

Details Method and apparatus for selective positioning of spectral filte Method and apparatus for selective positioning of spectral filte

1979-12-31

1982-09-28

Rubinson, Gene Z.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

354 33, 354 59, 354149, 2504821, 356225, G03B 7087

Patent

active

043515932

ABSTRACT:
Method and apparatus usable 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 additional spectral frequencies during a flash portion of the interval.

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