ISO 9848:2003 PDF

Scope: 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.

ISO 9848:2003 Referenced Document

ISO 5-2 Photography and graphic technology - Density measurements - Part 2: Geometric conditions for transmittance density*， 2009-12-01 Update
ISO 5-3 Photography and graphic technology - Density measurements - Part 3: Spectral conditions*， 2009-12-01 Update
ISO 554 Standard atmospheres for conditioning and/or testing; Specifications
ISO 6728 Photography; Camera lenses; Determination of ISO colour contribution index (ISO/CCI)

2003 ISO 9848:2003 Photography - Source document microfilms - Determination of ISO speed and ISO average gradient
1994 ISO 9848:1993/Cor 1:1994 Photography; source document microfilms; determination of ISO speed and ISO average gradient; technical corrigendum 1
1993 ISO 9848:1993 Photography; source document microfilms; determination of ISO speed and ISO average gradient