This standard specifies the method for determining the uniformity of silver salt photosensitive materials. This standard is mainly applicable to black and white and color film films of the silver salt system. Other incandescent tungsten light and silver salt photosensitive materials that simulate sunlight exposure are also applicable. This standard does not apply to photosensitive materials exposed using special light sources other than tungsten lamps (such as laser, fluorescence).
HG/T 3557-2001 history
2002HG/T 3557-2001 Determination of the uniformity of photographic materials