CSP color transform looks different in Nuke and RV

RV
1

Hey all,

Have been using OCIO color pipelines in both Nuke and RV for quite some time now without any issues, but recently we received a .csp file transform which yields different images when applied in RV and Nuke. Nuke seems to be applying it correctly, but in RV there seems to be some sort of color range clamping, making the image much less vibrant/under exposed.

I tried converting the .csp look into other formats (.cube, .spi1d, .csp, etc) but the result is always the same. I also had a look at the .csp contents and noticed it has values between [ - ∞ , ∞], whereas according to CSP docs those values should be normalized between [ 0 , 1 ]. I suspect this may explain the color clamping, but not sure how we can reconstruct this correctly if the same transform looks different in RV and Nuke.

Has anyone encountered anything like this before or have any suggestions?

Many thanks!
Vlasis

2

Are you in RV 2024.1 or above? Older versions of RV did not do the full OCIO process and tried to cheat it with a pre-baked cube LUT, which in my experience could mess things up quite a bit on certain shots.

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