Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Physical developing
Patent
1991-11-19
1993-02-02
Perkey, W. B.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Physical developing
354 21, 354105, 430 30, G03B 7099, G03B 724, G03C 500
Patent
active
051841746
ABSTRACT:
Off-the-film metering in a photographic film camera is improved by measuring actual film reflectivity at the time of film manufacture and recording a film adjusted exposure constant on a magnetic recording layer on the film. Camera apparatus is provided to read this film adjusted exposure constant value and generate an adjustable reference level representative of actual film reflectivity which is then used in confunction off-the-film metering apparatus to control exposure of the film in accordance with actual film reflectivity values rather than a fixed or assumed value. Measured film exposure aim may also be recorded at film production and used to control film exposure in the camera.
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Boos, Jr. Francis H.
Eastman Kodak Company
Perkey W. B.
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