Bildeteknikk

Emner: Optisk utstyr
Komité: ISO/TC 172/SC 1 (Fundamental standards)
Opprinnelse: ISO
Sluttdato: 12. okt 2022
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Komité: ISO/TC 42 (Photography)
Opprinnelse: ISO
Sluttdato: 12. okt 2022
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ISO 18946:2012 describes test methods for evaluating reflection colour photographic prints with regard to changes in image appearance resulting from exposure to both low and high relative humidity.


The observed changes relate to colour, tone and loss of sharpness caused by horizontal and vertical diffusion of colorants from exposure to elevated humidity levels. Other humidity-related factors are outside the scope of this test method.


The method and procedures described in ISO 18946:2012 are particularly appropriate to systems where the colorants are applied by a mechanism involving the diffusion of colorant into image-receiving layers and to certain types of inkjet media that are susceptible to Dmin yellowing.

Emner: Optisk utstyr
Komité: ISO/TC 172/SC 1 (Fundamental standards)
Opprinnelse: ISO
Sluttdato: 12. okt 2022
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ISO 9022-23:2016 specifies the methods relating to the environmental tests of optical instruments including additional assemblies from other fields (e.g. mechanical, chemical, and electronic devices), under equivalent conditions, for their ability to resist the influence of low pressure combined with cold, including the potential condensation and freezing of moisture, ambient temperature, and dry or damp heat.


It is applicable to optical instruments including additional assemblies from other fields, designed for operation and/or transport in high mountainous areas or on board aircraft or missiles.


The purpose of the testing is to investigate to what extent optical, climatic, mechanical, chemical, and electrical (including electrostatic) performance characteristics of the specimen are affected by combined low pressure and low, ambient, or high temperature. Furthermore, the additional effects of moisture condensing and freezing on the instrument or components can be determined. Examples are instruments which are installed or externally mounted on aircraft or missiles or transported inside aircraft or flying objects not providing any pressure equalization.


Annex A explains the intent of the different types of tests.

Emner: Optisk utstyr
Komité: ISO/TC 172/SC 1 (Fundamental standards)
Opprinnelse: ISO
Sluttdato: 14. okt 2022
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Komité: ISO/TC 36 (Cinematography)
Opprinnelse: ISO
Sluttdato: 8. nov 2022
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Komité: ISO/TC 42 (Photography)
Opprinnelse: ISO
Sluttdato: 10. nov 2022
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