Chaos Corona for 3ds Max > [Max] Corona Goodies - User Contributions

RED display transforms

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piotrus3333:
main Reinhard-based lut and setup attached.

display transform presets from RED:
https://www.red.com/download/ipp2-output-presets

muoto:
Nice one !

the last Gamma operator you add at the bottom, it's just for personnal taste and to add more contrast ?

piotrus3333:

--- Quote from: muoto on 2024-06-17, 11:40:33 ---Nice one !

the last Gamma operator you add at the bottom, it's just for personnal taste and to add more contrast ?

--- End quote ---

luts from RED output to rec709 display - gamma 2.4 - this last gamma layer converts to 2.2 display like default Corona.

muoto:
Small question, why do you need to add the reinhard on top before converting to Log3g10 ?
Would it not be possible to do a linear -> Log3g10 directly ?

piotrus3333:

--- Quote from: muoto on 2024-06-21, 10:50:32 ---Small question, why do you need to add the reinhard on top before converting to Log3g10 ?
Would it not be possible to do a linear -> Log3g10 directly ?

--- End quote ---

there is more Corona weirdness in the lut support for .cube format with input range beyond 0-1. I mean more than gamma issue. you would need another lut (or even gamma adjustment + lut) to correct for that. waste of time.
Reinhard (or Reinhard plus gamma) is just convenient way of getting the colours into 0-1f range (for the simple .cube lut), easy to do in pretty much every post software.

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