Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Corona Goodies - User Contributions => Topic started by: piotrus3333 on 2024-06-14, 14:49:52

Title: RED display transforms
Post by: piotrus3333 on 2024-06-14, 14:49:52
main Reinhard-based lut and setup attached.

display transform presets from RED:
https://www.red.com/download/ipp2-output-presets
Title: Re: RED display transforms
Post by: 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 ?
Title: Re: RED display transforms
Post by: piotrus3333 on 2024-06-17, 12:03:15
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 ?

luts from RED output to rec709 display - gamma 2.4 - this last gamma layer converts to 2.2 display like default Corona.
Title: Re: RED display transforms
Post by: 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 ?
Title: Re: RED display transforms
Post by: piotrus3333 on 2024-06-21, 11:43:59
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 ?

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.
Title: Re: RED display transforms
Post by: piotrus3333 on 2024-06-25, 13:13:01
RED (medium + medium) vs ACESOT:


image from:
https://github.com/sobotka/Testing_Imagery
Title: Re: RED display transforms
Post by: Tom on 2024-06-26, 04:25:14
RED version looks better imo: more details in shadows, more contrast. The weird thing is that some areas are not rendered in the same colour at all. Look on the right, the "COFFEE" neon signage: Red tends to render it blue when ACESOT renders it pink. The same goes on the left for the area around the guitar.
Title: Re: RED display transforms
Post by: muoto on 2024-06-26, 09:55:35
how does it compare to AGX ?
Title: Re: RED display transforms
Post by: piotrus3333 on 2024-06-26, 10:33:37
Quote from: muoto on 2024-06-26, 09:55:35
how does it compare to AGX ?

display transforms from RED give you more options out of the box:
4 presets for contrast
4 presets for highlight roll-off.

and creative looks are quite nice addition (you can also use any Log3G10 lut you can find).

AgX needs more input from user (contrast).
Title: Re: RED display transforms
Post by: piotrus3333 on 2025-04-04, 08:46:21
OCIO config based on RED display transforms and RED Creative LUT Kit:
https://piotrus3333.gumroad.com/l/ydlfxm
Title: Re: RED display transforms
Post by: muoto on 2025-04-07, 08:41:34
Thanks!

probably a 3ds question, but where do you select the "looks" (i mean the one you've set up with the red creative lut) with ocio ?
Title: Re: RED display transforms
Post by: piotrus3333 on 2025-04-07, 08:51:36
not supported in 3ds Max.
Try Natron or Resolve.