> I don't want to do elaborate stuff like working with masks / applying filters to sections of the photo only. Only thing I usually do is increase saturation, and, rarely, brightness/aperture.
You can't change the aperture after the image has been captured. I don't think you're the intended audience for darktable. Give https://filmulator.org/ a try!
You can't change the aperture after the image has been captured. I don't think you're the intended audience for darktable. Give https://filmulator.org/ a try!