Differential D20146 Diff 55204 general_concepts/colors/viewing_conditions.rst

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general_concepts/colors/viewing_conditions.rst

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33.. figure:: /images/en/color_category/Krita_example_metamerism.png 33​.. figure:: /images/en/color_category/Krita_example_metamerism.png
34 :figwidth: 500 34​ :figwidth: 500
35 :align: center 35​ :align: center
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37Lighting is the other component of the viewing condition which can have dramatic effects. Lighting in particular affects the way how all colors look. For example, if you were to paint an image of sunflowers and poppies, print that out, and shine a bright yellow light on it, the sunflowers would become indistinguishable from the white background, and the poppies would look orange. This is called `metamerism <https://en.wikipedia.org/wiki/Metamerism_%28color%29>`_, and it's generally something you want to avoid in your color management pipeline. 37​Lighting is the other component of the viewing condition which can have dramatic effects. Lighting in particular affects the way how all colors look. For example, if you were to paint an image of sunflowers and poppies, print that out, and shine a bright yellow light on it, the sunflowers would become indistinguishable from the white background, and the poppies would look orange. This is called `metamerism <https://en.wikipedia.org/wiki/Metamerism_%28color%29>`_, and it's generally something you want to avoid in your color management pipeline.
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39Examples where metamerism could become a problem is when you start matching colors from different sources together. 39​An example where metamerism could become a problem is when you start matching colors from different sources together.
woltheravUnsubmitted
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This sentence used to make sense colloquially, but now doesn't anymore?

"An example where metamerism" would now be necessary, I think.

woltherav: This sentence used to make sense colloquially, but now doesn't anymore? "An example where…
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42.. figure:: /images/en/color_category/White_point_mix_up_ex1_01.svg 42​.. figure:: /images/en/color_category/White_point_mix_up_ex1_01.svg
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44 :align: center 44​ :align: center
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46For example, if you are designing a print for a red t-shirt that's not bright red, but not super greyish red either. And you want to make sure the colors of the print match the color of the t-shirt, so you make a dummy background layer that is approximately that red, as correctly as you can observe it, and paint on layers above that dummy layer. When you are done, you hide this dummy layer and sent the image with a transparent background to the press. 46​For example, if you are designing a print for a red t-shirt that's not bright red, but not super greyish red either. And you want to make sure the colors of the print match the color of the t-shirt, so you make a dummy background layer that is approximately that red, as correctly as you can observe it, and paint on layers above that dummy layer. When you are done, you hide this dummy layer and sent the image with a transparent background to the press.
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