ISO 6846:1992

Photography — Black-and-white continuous-tone papers — Determination of ISO speed and ISO range for printing

Publication date: 3 dhj 1992

General information

Current stage: 90.93 Effective date: 5 qer 2020

Originator: ISO

Owner: ISO/TC 42

Type: International Standard

ICS: 37.040.20

Gjuha: frëngjisht anglisht

Buying

Statusi: Publikuar

PDF - 7 123 Lekë

Paper - 7 123 Lekë

CD - 7 123 Lekë

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Scope

Pertains to all conventional silver-halide contact and enlarging papers used for continuous-tone or pictorial photography. The method is based on exposing and processing samples, performing density measurements from the resultant image to produce a sensitometric curve from which measurements are taken and used to determine ISO speed and ISO range values. Annexes A to C deal with the relationships between the paper range and the effective density range of the negative, log exposure range and contrast, and log exposure range and average gradient.

Life cycle

PREVIOUSLY

Revises
ISO 6846:1983

NOW

PUBLISHED
ISO 6846:1992
90.93 Standard confirmed
5 qer 2020

REVISED BY

ABANDON
ISO/WD 6846

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