Photography. Source document microfilms. Determination of ISO speed and ISO average gradient

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

04-05-2004

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Sampling and storage
5 Test method
  5.1 Principle
  5.2 Safelights
  5.3 Exposure
  5.4 Processing
  5.5 Densitometry
  5.6 Evaluation
6 Product classification
  6.1 ISO speed
  6.2 ISO average gradient
  6.3 Accuracy
7 Product marking and labelling
  7.1 Speed
  7.2 Average gradient
  7.3 General
Annex A (informative) Use of ISO speed values
Bibliography

Specifies method for determining the ISO speed and ISO average gradient of black-and-white camera negative photographic films used for first generation microfilming of source documents at exposure times typically found with tungsten sources.

This International Standard specifies a method for determining the ISO speed and ISO average gradient of black-and-white camera negative photographic films used for first generation microfilming of source documents at exposure times typically found with tungsten sources. These source documents include any handwritten or printed alphanumeric and line documents such as books, periodicals, business correspondence, and engineering drawings. The value-rating system described in this International Standard is only useful to the consumer if his exposure illumination is from an incandescent tungsten source as described in 5.3.3. It is not intended to include pictorial or continuous tone reproduction, computer output microfilm (COM), reversal processed or direct positive films or other films exposed by non-tungsten sources such as laser or cathode ray tube.

The ISO speed and ISO average gradient values obtained by applying this International Standard are intended for practical use in comparing film/process combinations and for computing exposures.

Committee	CPW/42
DevelopmentNote	Supersedes 01/705119 DC (05/2004) Reviewed and confirmed by BSI, August 2014. (07/2014)
DocumentType	Standard
Pages	18
PublisherName	British Standards Institution
Status	Current
Supersedes	01/705119 DC : DRAFT MAY 2001

Standards	Relationship
ISO 9848:2003	Identical

ISO 5-3:2009	Photography and graphic technology Density measurements Part 3: Spectral conditions
ISO 2720:1974	Photography General purpose photographic exposure meters (photoelectric type) Guide to product specification
ISO 554:1976	Standard atmospheres for conditioning and/or testing — Specifications
ISO 5-2:2009	Photography and graphic technology Density measurements Part 2: Geometric conditions for transmittance density
ISO 6728:1983	Photography Camera lenses Determination of ISO colour contribution index (ISO/CCI)

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BS ISO 9848:2003

Current

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

Category

Subcategory

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