标准摘要
[中文适用范围]： 描述了一种确定航空摄影中使用的黑白负片的速度和平均梯度的方法。 根据加工条件，单个薄膜产品可能有多个速度和梯度值。 该规格不适用于红外航拍胶片。 [外文原描述]： Describes a method for determining the speed and average gradient of black-and-white negative films used in aerial photography. Depending on the processing conditions, a single film product may have several speed and gradient values. The specifications do not apply to infrared aerial films.
英文名称Photography — Black-and-white aerial camera films — Determination of ISO speed and average gradient