Ensuring proper skin tones (Photoshop)
Most people don’t like seeing themselves having too red, or especially magenta, skin tones. However, this easily happens, and the typical technical causes are either improper white balance, some sensor hypersensitivity at IR wavelengths, or possibly post processing trying to increase the saturation (”Velvia look”). When is it not right? But when is the red or magenta too much? Turns out there are easy rules in the CMYK colour space....