Photoshop Layer Masks: Using Calculations

Originally posted on Photofocus:

The Calculations command is an old school way to work with channels and color (it’s been around since before Photoshop had layers.  It’s also a great way to combine complex color channel data to build an alpha channel.  This can then be converted into a layer masks for a nondestructive way to hide pixels in a photo.

Can’t see the video?  Click Here.

Disclaimer: This is just one way to work with masks.

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