ISO 9848:1993
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ISO 9848:1993
17726

Abstract 

The method of determination specified is based on exposing and processing samples, measuring density from the resultant images to produce a sensitometric curve from which values are taken and used to determine ISO speed and ISO average gradient. Applies to black-and-white camera negative photographic films used for first generation microfilming of source documents at exposure times typically found with tungsten sources.


General information 

  •  :  Withdrawn
     : 1993-04
  •  : 1
     : 7
  •  : ISO/TC 42 Photography
  •  :
    37.080 Document imaging applications
    37.040.20 Photographic paper, films and plates. Cartridges

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