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hi autists, I'm a color noob and I'm wondering, does a chink, no name color checker/color card like pic related have any practical use?
it has the RGB values of each color printed on the back side but they don't correspond to those on any of the big name color cards, so is there any software or """creative""" way to use it as a practical calibration tool, or do all of those rely on preset values for each brand-name product?