Reference number
ISO 9848:2003
International Standard
ISO 9848:2003
Photography — Source document microfilms — Determination of ISO speed and ISO average gradient
Edition 2
2003-12
Preview
ISO 9848:2003
34534
No disponible en español
Publicado (Edición 2, 2003)
Esta publicación se revisó y confirmó por última vez en 2020. Por lo tanto, esta versión es la actual.

ISO 9848:2003

ISO 9848:2003
34534
Idioma
Formato
CHF 63
Convertir Franco suizo (CHF) a tu moneda

Resumen

ISO 9848:2003 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 ISO 9848:2003 is only useful to the consumer if his exposure illumination is from an incandescent tungsten source. 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 ISO 9848:2003 are intended for practical use in comparing film/process combinations and for computing exposures.

Informaciones generales

  •  : Publicado
     : 2003-12
    : Norma Internacional confirmada [90.93]
  •  : 2
     : 9
  • ISO/TC 42
    37.080  37.040.20 
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