Nowadays you can find loads of free Luts – 3DLuts .Cube format as used in Adobe, Luminar, Darktable ON1 etc…
How great would it be if you could just use it in Rawtherapee Film Simulation !
But, no, unfortunately not.
Rawtherapee can only work with PNG HaldCluts.
But wait !
There is a simple solution!
The Vertopal Free Online Converter
Here you can simply convert those .Cube files to PNG format,
and so DO use it in RawTherapee!
It only takes a few mouse clicks.

The photo gallery of Open Source Photography, Olympus micro 4/3 system, Vintage Lens Photograpy, Film Simulation, PictureFX, HDR – Photographer : Marc R.
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