缺乏摄影经验的同志,由于掌握不好正确的曝光量,拍摄时唯恐曝光不足,往往造成胶片感光过度。这种感光过度的底片主要表现为整个底片密度很大(一般称作厚),最小密度高于底片灰雾很多(约在0.60以上),整个底片没有透明的部分。用这样的底片印放出的照片,质量当然不好。怎样使这些曝光过度的底片,通过特殊处理成为正常或接近正常的底片呢?这就要 Lack of experience in photography comrades, due to the poor grasp of the right amount of exposure, fear of underexposure shooting, often resulting in film hypersensitivity. This overexposure film is mainly characterized by a large density of the entire film (generally referred to as thick), a minimum density of much higher than that of the film (about 0.60 or more), and no transparency of the entire film. Printed photos with such a negative film, of course, the quality is not good. How to make these overexposed films, through special treatment to become normal or near normal film it?