BS ISO 2721:2013
Current
The latest, up-to-date edition.
Photography. Film-based cameras. Automatic controls of exposure
Hardcopy , PDF
English
31-03-2013
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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.
| Committee |
CPW/42
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
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.
| 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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