ACES & Luts

[mckenzie2VER2]

What's the correct workflow to use LUTS with ACES?

In Redshift, I believe you have to change the view to un-tone-mapped, is it the same in Arnold? I tried this of course, but wanted to check as some LUTS look ridiculous and others fine.

[molora8946]

Arnold comes shipped with ACES as for the un-tone mapped view this can be done through the Arnold settings in the renderer hope this helps 🙂

[mckenzie2VER2]

I know it comes with ACES 🙂 What I'm asking is if I use a LUT as an imager, is changing the color space to un-tone-mapped the correct workflow?  

[molora8946]

hmmm if it's getting processed internally then I would think it's writing over the colour data might be better to export all frames and then do it in a compositing software like Blackmagic fusion or foundry nuke hope this helps 🙂

[peter_horvath]

I'd say it depends on the LUT. Some LUTs are expected to be applied in the render color space, others in sRGB, etc. That's what the Working Color Space controls in the imager. By default the render space is selected, in this case ACEScg. If the LUT requires sRGB (which is probably the most common), then change to sRGB (or un-tone-mapped).

[mckenzie2VER2]

that's what I figured.

Thanks.