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I've opened a normal map in my Image Texture, the node was set to Color Space > Linear, and it doesn't seem to make any difference with Non-Color. Without going into too many details, can someone confirm? Thanks:

enter image description here

File:

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  • $\begingroup$ This looks like a discution type of question from the main post. From the Title itself look like something like this blender.stackexchange.com/questions/144854/… Change your light source to see the difference, put a copy side by side and change the color space for one $\endgroup$
    – Emir
    Feb 27, 2023 at 18:42
  • $\begingroup$ thanks Emir but the post doesn't really answer, it says normal maps should be Non-Color, ok that's what I've always been told but Linear doesn't seem to make any difference?!? $\endgroup$
    – moonboots
    Feb 27, 2023 at 18:47
  • $\begingroup$ Is it possible that your normal map was already in the linear color space, and that's why you didn't see any noticeable difference between the "Non-Color" and "Linear" color space settings? $\endgroup$ Feb 28, 2023 at 1:13
  • $\begingroup$ the image i share is just an example, in my case I just created a black image (32 bit float), baked a normal map, and used it as a normal map. Then I noticed that the Image Texture was set to Linear. When I switched it to Non-Color it didn't seem to change anything, therefore my question $\endgroup$
    – moonboots
    Feb 28, 2023 at 6:25

1 Answer 1

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In most cases they are essentially the same and so is Raw. My tests showed no difference between the three. You have to make sure there is no gamma correction, which is done to improve visible images. The old dogma stems from back in the days when the image texture node did not have linear color space. However, to be on the safe side, I'd suggest you keep using non-color data, because:

Linear: Blender’s native linear space meaning there is no gamma mapping, using Linear Rec. 709 chromaticities and a D65 white point.

Non-Color and Raw:
Color space used for images which contains non-color data (e.g. normal maps).

https://docs.blender.org/manual/en/latest/render/color_management.html#ocio-config

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  • $\begingroup$ OK thanks a lot for the answer $\endgroup$
    – moonboots
    Feb 27, 2023 at 19:50

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