Creating a difference mask


show more Creating a difference mask provides you with in-depth training on Design. Taught by Deke McClelland as part of the Photoshop CS3 Channels & Masks: Advanced Techniques show less
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Creating a difference mask

In this exercise, I am going to show you how to create a Difference mask. Now the great thing about a Difference mask is that it highlights everything that changes from one channel to another and it gets rid of everything that doesn't change, that's the same from one channel to the next. By the way, I am working inside of a catch-up document called Applied images.psd, found inside the 16_tough_stuff folder. I have got my hand layer selected. It's active and it's also fully opaque. I am going to go ahead and press Ctrl+1 in order to see the red channel, Ctrl+2 for the green channel and Ctrl+3 for the blue channel. That's Command+1, Command+2, Command+3 on the Mac and you can see how things are shifting from one channel to the other.

So let's start by looking at the shadow. Keep your eyes locked in this region down here. Here is the red channel. Notice that the shadow is a bit lighter there. There is the green channel, darkens up ever so slightly and the blue chann...

Creating a difference mask
Video duration: 3m 7s 20h 47m Advanced

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Creating a difference mask provides you with in-depth training on Design. Taught by Deke McClelland as part of the Photoshop CS3 Channels & Masks: Advanced Techniques

Subjects:
Design Photography
Software:
Photoshop
Author:
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