From the course: Photoshop Masking and Compositing: Fundamentals
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Saving an image with alpha channels - Photoshop Tutorial
From the course: Photoshop Masking and Compositing: Fundamentals
Saving an image with alpha channels
In this exercise I'll show you how to save Alpha Channels along with your image file here inside Photoshop. Now you'll note that I'm still working along in the toolman.jpg file. I have unsaved changes as indicated by this asterisk outside of the parentheses here in my Title tab. If you're going to follow along with me in this exercise, you'll have to make sure that you've followed along with a previous couple of exercises and you're ready to save your brand- new Alpha Channels as well. Now the reason this is so important is because we're starting with a JPEG file and JPEG does not support Alpha Channels. It does support up to four channels where we saving, for example, a CMYK image, but you cannot save three color bearing channels along with an alpha, which is pretty interesting given that the JPEG format came around about 10 years after Alpha Channels. However, there is a variation on JPEG called JPEG 2000 that does support Alpha Channels. The problem is it's never really caught on…
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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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