BS ISO 12232:2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Exposure index values
   4.1 General
   4.2 Focal plane measurement
   4.3 Scene luminance measurement
5 Test conditions
   5.1 General
   5.2 Illumination
        5.2.1 Daylight illumination
        5.2.2 Tungsten illumination
   5.3 Temperature and relative humidity
   5.4 White balance
   5.5 Infrared (IR) blocking filter
   5.6 Photosite integration time
   5.7 Compression
   5.8 Other DSC user settings
6 Determination of ISO speed
   6.1 General
   6.2 Saturation-based speed
        6.2.1 Focal plane measurement
        6.2.2 Scene luminance measurement
   6.3 Noise-based speed
        6.3.1 Focal plane method
        6.3.2 Scene luminance method
        6.3.3 Colour cameras
        6.3.4 Quantization effects
   6.4 Method of reporting
7 Determination of standard output sensitivity (SOS)
   7.1 Method for calculating SOS
   7.2 Method of reporting
8 Specification of recommended exposure index (REI)
   8.1 Method for calculating recommended exposure index
   8.2 Method of report
Annex A (informative) Recommended procedure for
        determining the noise-based ISO speed
Annex B (informative) Scene luminance and focal
        plane exposure
Annex C (informative) Recommended procedure for determining
        SOS values
Annex D (normative) Removing low frequency variations
        from the image data
Annex E (informative) Calculation of noise-based minimum
        illumination level
Bibliography

Describes the method for assigning and reporting ISO speed ratings, ISO speed latitude ratings, standard output sensitivity values, and recommended exposure index values, for digital still cameras.