ISO 9848:1993
Withdrawn
View Superseded by
Photography — Source document microfilms — Determination of ISO speed and ISO average gradient
Hardcopy , PDF
04-29-1993
04-09-2025
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.
| Committee |
ISO/TC 42
|
| DocumentType |
Standard
|
| Pages |
7
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| SupersededBy |
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