BS 1380-1:1973
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Speed of sensitized photographic materials Negative monochrome material for still and cine photography
Hardcopy , PDF
15-03-1995
English
31-12-1973
Co-operating organizations
Foreword
Method
1 Scope
2 Determination of the arithmetical speed of a
specific sample of material
2.1 Conditioning of sample for testing
2.2 Exposure
2.3 Storage of exposed sample before processing
2.4 Processing
2.5 Density measurement
2.6 Speed criterion and calculation of arithmetical
speed
3 Conditions governing quotation of speed
3.1 British Standard speed
3.2 ISO speed
3.3 ISO developer
Table
1 Relationship between log10 E' and speed
Figure
1 Method for determining speed
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