How To Master Luminosity in Adobe Photoshop in 10 seconds

Описание: Our fifth and final essential blend mode for photo editing in Photoshop is Luminosity. Like the Color mode, Luminosity is found in the Composite group of blend modes along with Hue and Saturation, and is actually the exact opposite of the Color mode. Whereas the Color mode blends the colors of a layer while ignoring lightness values, the Luminosity mode blends the lightness values while ignoring the color information!

In photo editing, changing the blend mode of a layer to Luminosity is often a final step. For example, a very common photo editing technique is to use either a Levels or Curves adjustment layer to improve overall contrast in an image, and in many cases, this works perfectly. The problem you can run into, though, is that Levels and Curves affect not only the lightness values in an image, they also affect color. By increasing image contrast, you're also increasing color saturation, especially in reds and blues, and sometimes you'll even see a shift in colors. Too much color saturation in a photo can wipe out important image details. By changing the Levels or Curves layer to the Luminosity blend mode, we easily avoid the problem by telling Photoshop to ignore the color information completely.