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BS ISO 18909:2022

BS ISO 18909:2022

$198.66

Photography. Processed photographic colour films and paper prints. Methods for measuring image stability

Published By Publication Date Number of Pages
BSI 2022 64
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PDF Catalog

PDF Pages PDF Title
2 undefined
7 Foreword
8 Introduction
11 1 Scope
2 Normative references
3 Terms and definitions
12 4 Test methods — General
4.1 Sensitometric exposure
4.2 Processing
13 4.3 Densitometry
4.4 Definition of density terms
4.5 Density values to be measured
14 4.6 Method of correction of density measurements for dmin changes
4.6.1 General
17 4.6.2 Transmission density corrected for dmin
4.6.3 Reflection density corrected for dmin
4.6.4 Colour balance in a neutral density patch
4.6.5 dmin changes
4.6.6 dmin colour balance
18 4.7 Computation of image-life parameters
4.8 Effects of dye fading and stain formation on the printing quality of colour negative images
19 5 Test methods — Dark stability
5.1 Introduction
5.2 Test conditions
20 5.3 Number of specimens
21 5.4 Test equipment and operation for specimens free-hanging in air
5.5 Test equipment and operation for specimens sealed in moisture-proof bags
5.6 Conditioning and packaging of specimens in moisture-proof bags
5.7 Incubation conditions for specimens sealed in moisture-proof bags
5.8 Computation of dark stability
22 6 Test methods — Light stability
6.1 Introduction
6.2 Number of specimens
6.3 Irradiance measurements and normalization of test results
23 6.4 Backing of test specimens during irradiation testing
6.5 Specification for standard window glass
6.6 High-intensity filtered xenon arc ID65 illuminant (50 klx to 100 klx) for simulated indoor indirect daylight through window glass
26 6.7 Glass-filtered fluorescent room illumination — Cool White fluorescent lamps (80 klx or lower)
29 6.8 Incandescent tungsten room illumination 3,0 klx – CIE illuminant A spectral distribution
6.9 Simulated outdoor sunlight (xenon arc) 100 klx – CIE D65 spectral distribution
31 6.10 Intermittent tungsten-halogen lamp slide projection 1 000 klx
32 6.11 Computation of light stability
7 Test report
7.1 Introduction
35 7.2 Dark stability tests
7.3 Light stability tests
37 Annex A (informative) A method of interpolation for step wedge exposures
38 Annex B (informative) Method for power formula dmin correction of reflection print materials
43 Annex C (informative) Illustration of Arrhenius calculation for dark stability
47 Annex D (informative) The importance of the starting density in the assessment of dye fading and colour balance changes in light-stability tests
49 Annex E (informative) Enclosure effects in light-stability tests with prints framed under glass or plastic sheets
51 Annex F (informative) Data treatment for the stability of light-exposed colour images
59 Bibliography

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BS ISO 18909:2022
$198.66