Film simulation and HaldCLUTs

[kofa (István Kovács)]

This has been a topic of discussion several times. The answer is more or less that no one knows; the RT CLUTs are not meant to be exact.

How was the RawTherapee Film Simulation Collection created? And thanks!

I can’t speak to some of the other emulation packs out there (like @stefan.chirila and his Custom Chrome packs). These were generally a combination of manually tweaking and fiddling in an iterative process and sometimes using a starting point from others works. I’ve written about it before and based some things on work like Petteri Sulonen did initially with his portra-esque, velvia-esque, provia-esque, etc. curves. This was usually less a rigorous application of parameters (as you’ve mention…

Film emulation/simulation

Hello, There are many sites (free as well as commercial) offering LUTs for imitating classic film look. Some are generic, while others claim to closely resemble specific film emulsions. I have always been puzzled about what input such LUTs require. Do you apply them on scene-referred, linear input? (I know that @t3mujin provides complete darktable styles using channel mixer and tone curve, as well as LUTS.) If not, how do you prepare your raw files before applying a LUT or style? (I understan…