分析了彩色正片的感光度、灰雾度和灰差度等特性；

This article analyzes such Characteristics as sensitivity, fog density and contrast of the colour positive.

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结果：无赤光像反差为0.87时影像边缘效应、视觉清晰度最佳，灰雾为第二位。

Results: the best imagine edge effect and visual sense definition for red free light picture contrast is 0.87. Grey brume is the second important parameter.

youdao

结果：无赤光像反差为0.87时影像边缘效应、视觉清晰度最佳，灰雾为第二位。

Results: the best imagine edge effect and visual sense definition for red free light picture contrast is 0.87. Grey brume is the second important parameter.

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