I shot some pictures at night, at ISO 3200, and they are of course extremely noisy. But I want to keep them, and make them as decently looking as I can.
I use Darktable as a workflow software, and it offers four different plugins for denoise. I don't know how any of them works, but even if I knew the underlying principle, I'm not so good at photographic theory to know which one would be best for my pictures. Usually I just pick one at random and leave it at the default presets. But with these extremely noisy pictures, I need stronger denoise.
So I was wondering, should I choose one method of denoise and turn the slider up until I can't stand the blur? Or is it better to use several denoising techniques at once, in the hope that they have different disadvantages which don't stack?
I post the different denoise modules here, maybe some of you can recognize their working principle based on their names and parameters they have.
I think that "equalizer" is uncommon, it is a tool for enhancing local contrast for different sizes of structures. It has a "denoise" preset, too. The others are pure denoise tools. The documentation says "raw denoise" comes from dcraw.