Norm

NEN-ISO 9848:2003 en

Fotografie - Bron document microfilms - Bepaling van de ISO snelheid en ISO gemiddelde gradaties

48,19

Over deze norm

Status Definitief
Aantal pagina's 9
Gepubliceerd op 01-12-2003
Taal Engels
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.

Details

ICS-code 37.040.20
37.080
Nederlandse titel Fotografie - Bron document microfilms - Bepaling van de ISO snelheid en ISO gemiddelde gradaties
Engelse titel Photography - Source document microfilms - Determination of ISO speed and ISO average gradient

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