DEVICE FOR DETERMINATION AND PROCESSING OF EXPOSURE FOR PHOTOGRAPHIC PRINTING Russian patent published in 1994 - IPC

FIELD: photography. SUBSTANCE: device includes remote head of compensation photographic exposure meter by means of which accurate adjustment of exposure by negative image on photographic paper is accomplished and control desk where uncompensated resistor of balanced bridge composed of resistors and photoresistors are used as storage of time relay. Device makes it possible to prolong time lag depending on type of photographic paper and to select photographic paper depending of contrast of negative. EFFECT: expanded operational capabilities. 3 dwg