Now that you know how the color bearing channels work, it's time to introduce…you to the non-color bearing channels which are known as Alpha Channels.…I explain why they're called Alpha channels in the very next movie, but for our…purposes Alpha channels contain masks.…Let's imagine a simple scenario.…You start with a standard rectangular selection where you have to convert that…selection to an Alpha Channel, everything inside the rectangle would be white…and everything outside would be black, so just as everything inside the…selection is selected and everything outside is protected, where an alpha…channel is concerned white means selected and black means protected.…
So whatever modification you apply, whether you're moving or re-coloring or…rendering something utterly unrecognizable, it will only happen to the area…represented in white, but masking is not all black and white and alpha channel…is a grayscale image.…Those grays translate to subtle transitions, soft edges, gradient fades and…
Author
Released
11/4/2011- Setting up a workspace
- Working with the seven key selection tools
- Using the Color Range command
- Automating masking
- Matching a scene with Smart Filters
- Choosing the ideal base channel
- Converting a channel to a mask
- Painting with the Overlay and Soft Light modes
- Using History to regain a lost mask
- Working with the Calculations command
- Extracting a mask from a Smart Object
- Masking and compositing light
- Masking with black and white
- Working with path outlines
- Combining pixel and vector masks
- Creating and feathering a vector mask
Skill Level Intermediate
Duration
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Deke's Techniques
with Deke McClelland154h 49m Intermediate
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Introduction
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Adjusting the color settings4m 29s
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Setting up a power workspace5m 59s
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Welcome1m 8s
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1. It All Starts with the Channel
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How color channels work7m 7s
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Viewing channels in color3m 24s
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How RGB works4m 12s
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Single-channel grayscale5m 12s
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2. The Magic of Masking
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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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Putting a mask into play3m 55s
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3. The Science of Compositing
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Painting inside a mask6m 3s
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Cleaning up and confirming5m 18s
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Combining masks5m 10s
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Blending image elements6m 1s
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Introducing clipping masks5m 29s
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4. The Essentials of Selecting
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The marquee tools6m 31s
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The lasso tools5m 49s
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The Quick Selection tool8m 13s
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5. The Versatility of Combining and Transforming
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Selecting an eye7m 1s
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6. The Unmatched Power of Color Range
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7. The Unearthly Joy of Refinement
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Automated edge detection8m 23s
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Turning garbage into gold6m 19s
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Creating a fake blood effect5m 38s
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Establishing trails of blood7m 40s
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8. The Rewards of Everyday Masking
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9. The Mechanics of Layer Masks
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Working with path outlines7m 10s
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Recreating missing details8m 49s
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Masking glass5m 50s
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More to Come
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Next steps1m 17s
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Video: The alpha channel is home to the mask