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ISO/TS 20791-2:2021

Photography — Photographic reflection prints — Part 2: Evaluation of colour variation in printing

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Kehtiv alates 20.10.2021
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20.10.2021
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This document describes the procedures for evaluation of colour variation in the printing of photographic reflection colour prints. The following procedures are described to evaluate colour variation in printing within a consecutive print job, between several print jobs, or between multiple photographic images printed in different areas of a large sheet: a) test targets for small and large photographic prints; b) printing procedures and conditions; c) sampling in correspondence to the production scale; d) measurement of colour; e) calculation and analysis of colour variation and f) reporting. The procedures presented in this document are applicable for prints with a size of available picture area ranging from 35 cm2 (e.g. 5 cm × 7 cm) to 5 400 cm2 (e.g. 60 cm × 90 cm). This document is applicable to any of the photographic printing technologies, including inkjet, thermal dye transfer, electrophotography and silver halide (chromogenic) technologies.
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