本国际标准规定了旋度特性的测定和定量表达方法 指未经加工和加工的摄影胶片和纸张，采用薄片、卷或条状。 它规定了三种测量方法:方法A涉及将试样放在容器中时测定旋度 垂直位置，方法B和C，试样处于水平位置。这三种方法的值是 由于试样结构和尺寸的差异，不具有可比性。 这些方法不适用于在拍摄过程中确定摄影材料的卷曲特性 加工或干燥。

This International Standard specifies methods for determining and quantitatively expressing the curl characteristics of unprocessed and processed photographic film and paper in sheet, roll or strip formats. It specifies three measuring methods: method A involves the determination of curl when the specimen is held in a vertical position, methods B and C with the specimen in a horizontal position. The values for the three methods are not comparable because of the differences in specimen configuration and size. These methods are not intended for use in determining the curl characteristics of photographic materials during processing or drying.