Patent
1978-02-21
1979-07-31
Gonzales, John
354 48, 354236, G03B 708
Patent
active
041628314
ABSTRACT:
A photographic exposure control system incorporating a multizone shutter arrangement and a photoresponsive array, with each element of the array being responsive to one of a plurality of spacially oriented areas of the photographic scene and in control of one shutter zone which transmits image-carrying rays from that scene area to a pictorially corresponding area of the film to selectively compress the range of scene brightness to within the linear range of the film thereby enhancing shadow detail. In the illustrated embodiment, the exposure system in effect controls the multi-zone shutter to expose film areas corresponding to bright scene areas, having a relative brightness falling within the linear range of the film, at one exposure factor and film areas corresponding to darker scene areas at a greater exposure factor.
REFERENCES:
patent: 2953983 (1960-09-01), Larson
patent: 3116670 (1964-01-01), Ball
patent: 3409378 (1968-11-01), Shimomura
patent: 3442198 (1969-05-01), Biber
patent: 3479936 (1969-11-01), Land
patent: 3504603 (1970-04-01), Brzonkala et al.
patent: 3511142 (1970-05-01), Biber
patent: 3521954 (1970-07-01), French
patent: 3555987 (1971-01-01), Browning
patent: 4050814 (1977-09-01), McFadden
Gonzales John
Polaroid Corporation
Thornton David R.
LandOfFree
Camera and method for selectively compressing scene brightness does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Camera and method for selectively compressing scene brightness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera and method for selectively compressing scene brightness will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-21321