很长时间以来,一直有影友(或知名摄影人士)倡导,在使用低感光度胶卷(例如ISO100)拍照时,若遇到环境光线比较弱,无法进行正常的测光时,可以把照相机的感光度设置调高,以达到测弱光的目的,甚至在某些摄影小册子里,对这种测光方法也有所介绍。 For a long time, there have always been friends (or well-known photographers) who advocate the use of low-sensitivity film (such as ISO100) when taking pictures, in the face of relatively weak ambient light, normal photometry can not be carried out, the camera’s Sensitivity settings increased to achieve the purpose of measuring weak light, and even in some photographic brochures, this metering method is also described.