GIMP 2.10 Photography Tutorial: Using Luminosity Masks

In this tutorial, I’ll show you how to use something called a Luminosity Mask to separate your image into dark, mid-tone, and light channels to edit areas with different exposures. This method allows you to edit your image based on “tonal regions,” which makes it easy to edit darker and lighter portions of your image separately without affecting one another.

Once I create the luminosity masks, I edit the brightness-contrast of the image, as well as the shadows-highlights, levels, curves, color balance, and saturation of each tonal region.

This tutorial covers some advanced concepts, but is explained thoroughly so that the tutorial is great for beginners.

Downloads

Download the photo used in this tutorial here.

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