Creating a channel-based mask


show more Creating a channel-based mask provides you with in-depth training on Photography. Taught by Tim Grey as part of the Creating Composites in Photoshop show less
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Creating a channel-based mask

You may already be familiar with the fact that a color image is comprised of multiple channels that represent the individual colors, the primary colors. In most cases those channels are red, green and blue for an RGB image and that represents the amount of red, green or blue light that is included for each individual pixel, determining the overall brightness and color values for each of those pixels. But you can also use those channels as the basis of a layer mask. Let's take a look at how it's done.

I have an image here and I'd like to select the foreground so that I can replace the sky, for example. So I'll go to the Channels panel and if you don't have the Channels panel visible, you can go to the Window menu and choose Channels. But then we can click on each thumbnail in turn for the red channel, the green channel and the blue channel and what we're looking for is the channel that has the best contrast for the area of the photo that we want to se...

Creating a channel-based mask
Video duration: 6m 53s 3h 10m Intermediate

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Creating a channel-based mask provides you with in-depth training on Photography. Taught by Tim Grey as part of the Creating Composites in Photoshop

Subjects:
Photography video2brain
Software:
Photoshop
Author:
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