底片缺陷分析及鉴别仪器国家照相机质量监督检验中心周竑长期来，对底片缺陷的分析往往被忽视，尤其在扩印照片时，大部份彩扩店对整卷底片非常粗略的在普通自然光下或灯光下观察一下，大致上觉得可以就进行扩印，以至扩出的照片质量比较一般，俗称“统货”，这种照片确实... Analysis and identification of film defects National Camera Quality Supervision and Inspection Center Zhou 竑 long time, the analysis of the film defects are often overlooked, especially in the photographic prints, most of the Caikuo film on the whole film is very rough in ordinary natural light or light Under the observation, generally think it is possible to carry out expansion, as well as expanding the quality of photos more general, commonly known as “stock”, this photo is indeed ...