![]() In this case you will set the Gamma Correction for Textures to 2.2. You assume all textures should be interpreted as sRGB and you add a gamma correction node for specific textures that should be interpreted as linear. Gamma correction controls are helpful for users to make sure they are working in radiometrically linear space (also called ‘linear workflow’). Linear workflow ensures that all of the elements interacting in a scene (light colors, textures and shader colors) correspond linearily with actual amounts of light so that the renderer does proper light computations in a physically accurate way. This is needed since light works linearly in the physical world (if you double the amount of photons, the color values are also doubled).
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