ISO 9848:1993

Photography — Source document microfilms — Determination of ISO speed and ISO average gradient

95.99 Withdrawal of Standard Nov 19, 2003

General information

Current stage: 95.99 Effective date: Nov 19, 2003

Originator: ISO

Owner: ISO/TC 42

Type: International Standard

ICS: 37.040.20 37.080

Scope

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.

Life cycle

NOW

WITHDRAWN
ISO 9848:1993
95.99 Withdrawal of Standard
Nov 19, 2003

CORRIGENDA / AMENDMENTS

Corrected by
ISO 9848:1993/Cor 1:1994

REVISED BY

PUBLISHED
ISO 9848:2003

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