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Standard
| GB/T 2923-1995 Determination of ISO speed of black-and-white pictorial still camera negative film/process systems (English Version) |
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Detail of GB/T 2923-1995
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Introduction of GB/T 2923-1995
本标准规定了照相用黑白负片ISO感光度的测定。本标准适用于使用通用药品和设备加工的胶片，但也适用于特殊工艺加工的胶片，例如，使用活化剂显影或热显影。本标准不适用于电影摄影、航空摄影、制版印刷、射线摄影和显微摄影胶片，也不适用于扩散转移系统的负片。
Contents of GB/T 2923-1995