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BS ISO 12232:2019+A1:2020

BS ISO 12232:2019+A1:2020

$167.15

Photography. Digital still cameras. Determination of exposure index, ISO speed ratings, standard output sensitivity, and recommended exposure index

Published By Publication Date Number of Pages
BSI 2020 34
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This document specifies 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. It is applicable to both monochrome and colour digital still cameras.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Exposure index
4.1 General
12 4.2 Focal plane measurement
4.3 Estimating focal plane exposure from scene luminance
5 Test conditions
5.1 General
5.2 Illumination
5.2.1 Daylight reference illuminant
13 5.2.2 Tungsten reference illuminant
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 and ISO speed latitude
6.1 General
14 6.2 Saturation-based calculations
6.2.1 Focal plane measurement
15 6.2.2 Scene luminance measurement
6.3 Noise-based calculations
6.3.1 Focal plane method
16 6.3.2 Scene luminance method
6.3.3 Colour cameras
6.3.4 Quantization effects
17 6.4 Method of reporting
18 7 Determination of standard output sensitivity (SOS)
19 7.1 Method for calculating SOS
7.2 Method of reporting
20 8 Specification of recommended exposure index (REI)
8.1 General
8.2 Method for calculating recommended exposure index
8.3 Method of reporting
23 Annex A (informative) Recommended procedure for determining the noise-based ISO speed
25 Annex B (informative) Scene luminance and focal plane exposure
27 Annex C (informative) Recommended procedure for determining SOS values
28 Annex D (normative) Removing low frequency variations from the image data
29 Annex E (informative) Determination of encoding‐relative sensitivity (ERS)
31 Bibliography

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BS ISO 12232:2019+A1:2020
$167.15