The magnified black white positive separation plates of the negative color film were made with an ordinary enlarger and the filters of red, green and blue.
其彩色负片分别用红、绿、蓝滤色镜及普通放大机分色放大，制成黑白正版。
The magnified black white positive separation plates of the negative color film were made with an ordinary enlarger and the filters of red, green and blue.
其彩色负片分别用红、绿、蓝滤色镜及普通放大机分色放大，制成黑白正版。
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