ISO 6846:1992

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

Publication date: Dec 3, 1992

General information

Current stage: 90.93 Effective date: Jun 5, 2020

Originator: ISO

Owner: ISO/TC 42

Type: International Standard

ICS: 37.040.20

Languages: French English

Buying

Status: Published

PDF - ALL 7,123

Paper - ALL 7,123

CD - ALL 7,123

Language

Language in which you want to receive the document.

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
Jun 5, 2020

REVISED BY

ABANDON
ISO/WD 6846

Preview

Only informative sections of projects are publicly available. To view the full content, you will need to members of the committee. If you are a member, please log in to your account by clicking on the "Log in" button.