Polaroid Corporation

Nathan Gold

Richard J Coppa

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.

Camera and method for selectively compressing scene brightness

An electronic camera apparatus and method for providing increased apparent resolution in a color imaging system are described. The apparatus and method employ a transducing array of photosensitive elements, each element being operably associated with one of a plurality of selected wavelength ranges. An electrical circuit samples the output signal train from the transducing array and generates a plurality of color representing signals. The electrical circuit fills in gaps occurring in each color signal with amplitude values derived from processing at least two of the color signals. The method and apparatus thereby maintain sharp and aligned edge information in each of the color signals.

Apparatus and method for electronically improving the apparent

A photoresponsive, shutter-diaphragm exposure control system having light regulating blades displaced from a light-blocking position to define increasing aperture values during an exposure interval includes a source of flash illumination which is energized with or just prior to initiation of the exposure interval for flash operation. In this arrangement, the flash illumination envelope is superimposed in a leading arrangement on the aperture opening curve so as to provide increasing illumination intensity in slightly leading relation to the increasing aperture values.

Growing community of inventors

Framingham, MA, United States of America

Nathan Gold