I'd like to submit a feature request for ACR to have 3D LUT support, but Adobe Camera Raw isn't listed as a product in the Feature Request site:
Adobe - Feature Request/Bug Report Form
I'm trying to use the new OSIRIS looks from Vision-Color in a RAW workflow that would be easy to nondistructively edit without having to jump into Photoshop and create layers to save them out.
You're in the right forum for that.
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