by Julieanne Kost

 Comments (2)


November 18, 2010

A great way to ensure that a change you make to an image is only affecting the tonal (not color) values is to set the blend mode to Luminosity. For example, if you have an area in an image that is too dark and you want to lighten it without changing the colors, add a Curves Adjustment Layer and set the blend mode to Luminosity. Then raise or lower the curve as necessary – without affecting the color values. This can be especially helpful when dodging or burning skin-tones. If you want to affect the colors and not the tonal values, simply change the blend mode to color.


  • By Michele - 5:42 AM on November 18, 2010  

    When working on photographic images, I quite often use Luminosity on a copy layer that I’ve turned to B&W. It can also give more tonal range and a pleasing result to the final image.

  • By Glyn Dewis - 6:41 AM on November 18, 2010  

    Thanks for the tip Julieanne; definitely one I’ll be making use of!

    All the best to you,