From the course: Photoshop Masking and Compositing: Fundamentals
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Loading a selection from another image - Photoshop Tutorial
From the course: Photoshop Masking and Compositing: Fundamentals
Loading a selection from another image
In this exercise we'll load an alpha channel from an entirely different image to select that wrench, and then we'll make the wrench glow. I've saved my progress as Blasting rays. psd, and notice that I also have opened an image called Wrench.jpg and I want you to keep an eye on his wrench as I switch between the images. Notice that Wrench.jpg contains a single channel and that channel serves as a mask that is exactly aligned with the wrench in the other image. So this image is the same physical size, the same number of pixels wide and the same number of pixels tall. And how in the world did I create this image? Well, as I always preparing this file for you, I went ahead and created an alpha channel for the wrench, and then I went ahead and saved it out as a new image, and you can copy a channel to a new image just by right-clicking on the channel. For example, in this case, I'm right- clicking on the eyes channel, I'll choose Duplicate Channel, and then you change the document setting…
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Contents
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The origins of the alpha channel3m 40s
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How a mask works7m 10s
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Making an alpha channel4m 2s
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Using the new channel icons6m 27s
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Saving an image with alpha channels4m 23s
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Loading a selection from a channel4m 7s
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Putting a mask into play3m 55s
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Loading a selection from a layer4m 27s
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Loading a selection from another image4m 36s
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The alpha channel is home to the mask1m 40s
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