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波兰华沙中央光学研究所(CLO)研究发展了一种制作彩色电影拷贝时校正彩色的装置。这种彩色校正装置由一作为光源用的卤素灯、光学系统及一套由穿孔带控制的滤光片组成。彩色校正应用加色法。这种光源既适用于间歇式接触印片机,又适用于连续通过式印片机。在制作拷贝时,用加色法控制彩色的目的在于平衡补偿由于拍摄时错误选择照明、曝光时间有误及乳剂感光度不均匀等原因所造成的底片彩色缺陷,这样就有可能调正到所需要的彩色色调。
The Polish Central Academy of Optical Research in Warsaw (CLO) has developed a device that corrects color when making color film copies. This color correction device consists of a halogen lamp as a light source, an optical system and a set of filters controlled by a perforated tape. Color correction applications plus color method. This light source is not only suitable for intermittent contact printing machine, but also for continuous through the printing machine. When making a copy, the purpose of color control with additive colorization is to compensate for the color defects of the negatives caused by incorrectly selected lighting, incorrect exposure times, and uneven emulsion sensitivities during shooting, so that it is possible to correct Necessary color tone.