Trained a LoRA on around 800 LUTs, including some movie-related ones, finishing LUTs, wedding, analog, cinematic, drama, vintage, etc.

You can experiment with [movie name/director] cinematic LUT

Recommended strength: ~0.6

LUT stands for “look-up table.” A LUT is a tool that lets filmmakers, editors, and colorists save particular color grades as a template. Think of a LUT as a color preset that a filmmaker can readily turn to when working on a project.

https://lutify.me/essential-steps-in-color-grading-when-using-luts/

So basically they're like presets for color grading or adding filters to your photos.
E.g the greenish hue for the Matrix movie, the orange/teal grading on action movies, the darker/greyish/yellowish vibe of the Nolan movies, etc