Differential D19807 Diff 54034 general_concepts/colors/viewing_conditions.rst

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general_concepts/colors/viewing_conditions.rst

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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.	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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49	.. figure:: /images/en/color_category/White_point_mixup_ex1_02.png	49	.. figure:: /images/en/color_category/White_point_mixup_ex1_02.png
50	:figwidth: 300	50	:figwidth: 300
51	:align: center	51	:align: center
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54	But when you get the t-shit from the printer, you notice that all your colors look off, mismatched, and maybe too yellowish (and when did that T-Shirt become purple?).	54	But when you get the t-shirt from the printer, you notice that all your colors look off, mismatched, and maybe too yellowish (and when did that T-Shirt become purple?).
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56	This is where white points come in.	56	This is where white points come in.
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58	You probably observed the t-shirt in a white room where there were incandescent lamps shining, because as a true artist, you started your work in the middle of the night, as that is when the best art is made.	58	You probably observed the t-shirt in a white room where there were incandescent lamps shining, because as a true artist, you started your work in the middle of the night, as that is when the best art is made.
59	However, incandescent lamps have a black body temperature of roughly 2300-2800K, which makes them give a yellowish light, officially called White Point A.	59	However, incandescent lamps have a black body temperature of roughly 2300-2800K, which makes them give a yellowish light, officially called White Point A.
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61	Your computer screen on the other hand, has a black body temperature of 6500K, also known as D65. Which is a far more blueish color of light than the lamps you are hanging.	61	Your computer screen on the other hand, has a black body temperature of 6500K, also known as D65. Which is a far more blueish color of light than the lamps you are hanging.
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