International Standard
ISO 6846:1992
Photography — Black-and-white continuous-tone papers — Determination of ISO speed and ISO range for printing
Reference number
ISO 6846:1992
Edition 2
1992-12
© ISO 2024
International Standard
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Published (Edition 2, 1992)
This standard was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 6846:1992

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CHF 63
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Abstract

Pertains to all conventional silver-halide contact and enlarging papers used for continuous-tone or pictorial photography. The method is based on exposing and processing samples, performing density measurements from the resultant image to produce a sensitometric curve from which measurements are taken and used to determine ISO speed and ISO range values. Annexes A to C deal with the relationships between the paper range and the effective density range of the negative, log exposure range and contrast, and log exposure range and average gradient.

General information

  • Status
     : Published
    Publication date
     : 1992-12
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 2
    Number of pages
     : 9
  • Technical Committee :
    ISO/TC 42
    ICS :
    37.040.20 
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