The Luminosity blending mode applies the luminosity (brightness) of the blend colors to the base image while retaining the hue and saturation of the base image. Luminosity is the opposite of the Color blending mode.
The Luminosity blending mode has often been used to remove undesirable color halos that could result from sharpening. It can also be used for special effects such as in this tutorial for turning a photo into a painting.
