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我国化工部第一、二胶片厂、上海感光材料厂等均生产油溶彩色正片(以下简称油彩正)。规格为35mm,灯光型7DIN,每盘装300米,出厂后1.5年以内为有效期。这种胶卷在电化教育中具有重要用途。用拍摄冲洗好的彩色负片为底片,以油彩正为生片拷贝彩色幻灯片;用油彩正为底片进行翻拍白纸黑字原件,在镜头前加上某色滤光镜、滤色镜或滤色片,冲洗后即可得到与某色互为补色的彩底白字幻灯片,用于显微摄影或翻拍,经反转
China’s Ministry of Chemical Industry, the first two film factories, Shanghai Light Material Factory and so on are producing oil-soluble color positive (hereinafter referred to as oil color is positive). Specifications for the 35mm, light-type 7DIN, each plate installed 300 meters, 1.5 years after delivery for a period of validity. This film has an important use in electrification education. Use filming good color negative film as a negative film, with a positive color film for the color copy of the slide; with oil for film negatives black and white original copy, in front of the lens with a color filter, filter or color filter, rinse You can get a complement each other with a complementary color white slides for microscopy or remake, the reverse