Photoshop Channel Math: Add, Subtract, and Intersect for Advanced Luminosity Masking

Explore advanced luminosity masking techniques in this 15-minute tutorial on Photoshop channel math. Learn how to combine multiple masks, selections, or channels through addition, subtraction, and intersection for greater precision in image editing. Discover powerful methods to enhance shadow detail, refine mask edges, and create custom luminosity selections. Gain insights into the mechanics of channel combinations and find answers to common questions about manual luminosity selection creation. Apply these techniques using Lumenzia in the first half of the tutorial, then delve into the underlying Photoshop processes in the second half. Access additional resources and tutorials for further exploration of these powerful image editing tools.

Intro
Brightness
Intersect
Underlying channels
Combining channels
Subtracting
Other ways