ACES Workflow - Painter to Arnold - HDRi

[romainm50382002]

Hi,

I got few questions on how to use the HDRi maps in Painter (and Maya 2022 and Arnold).

What colorspace do I have to choose, if I want to get the exact same result for my asset in Painter and Arnold 

• If my HDRi map is already preconverted in ACES
  • in Painter ?
  • in Maya ?
• If my HDRi map isn't preconverted ( I guess that's the case for default maps like Tomoco, Panorama...)
  • in Painter ?
  • in Maya ?

Hope it's clear. Thahks

[sharktacos · Accepted solution]

If you are working in ACES then HDRI maps need to be in the working color space: ACEScg. Many HDRI maps found on the web are in sRGB/Rec709 scene-linear so they need to be converted into ACEScg.  So the input transform would be Utility - Linear sRGB/Rec.709.

To get the same result in both programs you need to input the maps the same way in both.

[romainm50382002]

Thanks for your reply. I'll do this.

Regards.