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Database: 189760 (18 Oct 2025)
GB/T 2923-1995 English PDF
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GB/T 2923-1995
: Determination of ISO speed of black-and-white pictorial still camera negative film/process systems
GB/T 2923: Evolution and historical versions
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GB/T 2923-1995
English
209
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Determination of ISO speed of black-and-white pictorial still camera negative film/process systems
GB/T 2923-1995
GB 2923-1982
English
519
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4 days [Need to translate]
Methods for determination of speed of black-and-white photographic negative materials for still and motion-picture photography
Obsolete
GB 2923-1982
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Basic data
Standard ID
GB/T 2923-1995 (GB/T2923-1995)
Description (Translated English)
Determination of ISO speed of black-and-white pictorial still camera negative film/process systems
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
G80
Classification of International Standard
37.060.20
Word Count Estimation
6,640
Date of Issue
12/20/1995
Date of Implementation
8/1/1996
Older Standard (superseded by this standard)
GB 2923-1982
Quoted Standard
GB 11500; GB 11501; GB 15061
Adopted Standard
ISO 6-1993, IDT
Issuing agency(ies)
State Bureau of Technical Supervision
Summary
This standard specifies the determination of black and white photographic negatives ISO sensitivity. This standard applies to the use of generic drugs and equipment for processing the film, but also applies to the special processing of the film, for example, developing activators or thermal imaging. This standard does not apply to film photography, aerial photography, plate printing, photography and photomicrography ray film, does not apply to negative diffusion transfer system.