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BS ISO 2721:2013

Current
Current

The latest, up-to-date edition.

Photography. Film-based cameras. Automatic controls of exposure
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-31-2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Specific requirements
5 Calibration of the exposure controls
6 Acceptance angles of the photoelectric system
Annex A (normative) - Measurement of light exposure in
        the focal plane and calibration of measuring
        instrument
Annex B (normative) - Size of measuring area
Annex C (normative) - Performance test
Bibliography

Describes the exposure at the focal plane of film-based cameras for values of two exposure parameters, i.e. field luminance and film speed, and also describes methods of evaluating other photometric characteristics, such as the acceptance angles of the photoelectric system.

This International Standard specifies the exposure at the focal plane of film-based cameras for values of two exposure parameters, i.e. field luminance and film speed, and also describes methods of evaluating other photometric characteristics, such as the acceptance angles of the photoelectric system.

This International Standard applies to automatic exposure control systems which are built into film-based cameras or coupled with them to regulate the exposure in the focal plane as a function of the several exposure parameters. The mechanism can control either the focal-plane illuminance or the exposure-time interval or both. Pointer (or needle) matching systems are included in this International Standard even though they are not fully automatic. This standard is not applicable to digital cameras.

Committee
CPW/42
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO 2721:2013 Identical

IEC 60068-2-27:2008 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
ISO 6:1993 Photography — Black-and-white pictorial still camera negative film/process systems — Determination of ISO speed
ISO 5800:1987 Photography Colour negative films for still photography Determination of ISO speed
ISO 2240:2003 Photography Colour reversal camera films Determination of ISO speed

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