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Originally Posted by nand chan
That being said, the .3dlut file format has some other, ridiculously major flaws imo, because it's lacking a lot of meta-tags.
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Inclusion of this information, as well as stuff like gamut, gamma, and white point would be *critical* to a fully functional 3dLUT format.
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3DLUT format spec is not complete yet. In the beginning the current state was more than enough, but now I'm perfectly aware that it's not. Unfortunately I currently don't have time to finish it, so we have to discuss it later.
Quote:
Originally Posted by nand chan
Ps. Floating point can have another advantage: Since value ranges are normalized from 0 to 1, that makes gamut mapping independent of the level range.
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No, it's not. The black and white with FP is not always 0.0 and 1.0. That happens only with levels 0-255.
Quote:
Originally Posted by nand chan
Also, what about 9->16 bit LUTs for eg. Hi10P content?
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Using a 9/16 (768MB) 3DLUT for a small increase in precision it's not worth it. The 9/32 (1536MB) shows a significant theoretical increase, but probably no one would be able see any difference, so it might not be worth it too...