Lum-vs-sat curve

The lum-vs-sat curve sets saturation by brightness: the horizontal axis runs from shadows to highlights, and lifting or dropping a point adds or removes saturation at that brightness. Its everyday use is pulling saturation out of the very brightest and very darkest zones, so blown highlights and deep shadows read clean and neutral instead of carrying a tint. It sits alongside the hue-vs curves in the curves family; a related sat-vs-sat curve works on the most saturated pixels rather than the brightest, which is handy for taming hot spots.

First used in: 2.5 · The curves family