Reference number
ISO 10505:2009
International Standard
ISO 10505:2009
Photography — Root mean square granularity of photographic films — Method of measurement
Edition 1
2009-05
Read sample
ISO 10505:2009
50747
Published (Edition 1, 2009)
This publication was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 10505:2009

ISO 10505:2009
50747
Language
Format
CHF 129
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Abstract

ISO 10505:2009 describes a method for determining the intrinsic root mean square granularity (rms‑granularity) of photographic films. Intrinsic rms-granularity refers to those density fluctuations produced solely by the distribution of developed image forming centres in the photographic emulsion.

Continuous-tone monochrome (silver absorbing species) and colour (dye absorbing species) materials coated on a transmitting support can be measured by the procedures described in ISO 10505:2009. ISO 10505:2009 is intended for imaging systems with viewing magnifications between 5x and 12x (see Annex A).

The following kinds of granularity measurements are not covered by ISO 10505:2009, even though they are photographically important:

  • reflecting materials (photographic papers);
  • materials having emulsion coated on both sides of the support (e.g. some X-ray films);
  • the estimation of the noise power spectrum (Wiener spectrum).

General information

  •  : Published
     : 2009-05
    : International Standard confirmed [90.93]
  •  : 1
     : 24
  • ISO/TC 42
    37.040.20 
  • RSS updates

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