ISO 9848:1993
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Photography Source document microfilms Determination of ISO speed and ISO average gradient
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
23-09-2021
29-04-1993
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The method of determination specified is based on exposing and processing samples, measuring density from the resultant images to produce a sensitometric curve from which values are taken and used to determine ISO speed and ISO average gradient. Applies to black-and-white camera negative photographic films used for first generation microfilming of source documents at exposure times typically found with tungsten sources.
| DocumentType |
Standard
|
| Pages |
7
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
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