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ISO 9378:1993

Photography — Vesicular microfilm — Determination of ISO speed and ISO range

Sep 23, 1993

General information

90.93     Dec 20, 2023

ISO

ISO/TC 42

International Standard

37.040.20  

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Scope

The principle of the method specified is exposing and processing samples as specified, obtaining density measurements from the resultant images to produce a sensitometric curve from which values are taken and used to determine ISO speed and ISO range. The method applies to vesicular microfilms which have their principal spectral sensitivity in the region of 350 nm to 450 nm and are used to produce negative-appearing images from positive originals and positive-appearing images from negative originals.

Life cycle

NOW

PUBLISHED
ISO 9378:1993
90.93 Standard confirmed
Dec 20, 2023