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  • BSI
    BS ISO 9848:2003 Photography. Source document microfilms. Determination of ISO speed and ISO average gradient
    Edition: 2004
    $313.97
    / user per year

Description of BS ISO 9848:2003 2004

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.



Standard NumberBS ISO 9848:2003
TitlePhotography. Source document microfilms. Determination of ISO speed and ISO average gradient
StatusConfirmed
Publication Date2004-04-05
Identical National Standard OfISO 9848:2003
DescriptorsMicrofilm, Photography, Monochrome photographic film
ICS37.040.20 Photographic paper, films and plates. Cartridges, 37.080 Document imaging applications
CommitteeCPW/42
ISBN0 580 43596 2
PublisherBSI
Pages18

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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