Camera conversion Luts

[psjvfx]

i have a project shot in Arri log c. The arri log c to HD video 3d Lut applied to the monitor works perfectly.
I am comping SRgb graphics over these, but I want to keep the shots in log c colour space when I re supply to DI so the original grades can be applied to the comp. I can't seem to find a way to make a invert of the 3D Lut to import the graphics or apply in batch.

If I convert everything to scene linear, is there a scene linear to arri log c conversion.

Alternatively I could just export scene linear and let DI handle the conversion.

Or how do approach this using aces.

[cedriclejeune]

Hi PSJ,

you cannot invert 3DLUTs in Flame, even if you could it would be a bad idea for precision reasons.

If you convert to scene linear using Photomap or 1DLUT you can convert back to logC with the invert LUT. Those don't have precision issues.