这里介绍一下求取反差系数和感光度的简易方法,即γ尺直接量取法和S尺量取法。使用此法可省略繁琐的计算过程。现分述如下: 一、γ尺反差系数通常用γ(伽傌)来表示,它是感光材料的一项重要性能指标。目前我国求取γ值的方式有几种:数字计算法、平行移动法和“γ尺”直接量取法。后一种方式较前两种简便、迅速、精确。 Here to introduce a simple method for obtaining the contrast coefficient and sensitivity, that is, γ-foot direct measurement method and S-foot measurement method. Use this method to omit the cumbersome calculation process. Now described as follows: First, gamma ruler contrast coefficient is usually expressed as gamma (gamma), it is an important performance indicators photosensitive material. At present, there are several ways to get γ value in our country: the digital calculation method, the parallel movement method and the “γ ruler” direct measurement method. The latter way than the previous two simple, rapid and accurate.