指定测量控件特有特性的方法，例如精度和重复性。还规定了具有自动曝光控制的闪光设备对物体亮度和曝光时间的积分数值，以及与这些标称值的最大偏差。

Specifies the methods for measuring the characteristics peculiar to the control such as accuracy and repeatability. Also lays down the numerical values of the integral of time of the object luminance and of the exposure given to an object by flash equipment with automatic exposure control, and the maximum deviation from these nominal values.