From the course: After Effects Apprentice: 04 Layer Control

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Working with adjustment layers and alpha channels

Working with adjustment layers and alpha channels - After Effects Tutorial

From the course: After Effects Apprentice: 04 Layer Control

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Working with adjustment layers and alpha channels

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Now remember in the previous movie I said that After Effects makes the copy of all the layers underneath the adjustment layer and then copies that composite into the adjustment layer. You still have all those layers underneath. The adjustment layer is just a copy of them. That means that anything that affects the Opacity or Alpha Channel adjustment layer will have an affect on the final results. For example, if I do something simple like just press T for Opacity, as I fade the adjustment layer out, you'll see I'll get back to the original composite underneath. So this gives you sort of blend with original for your effects applied to the adjustment layer, and by the way you can apply more than one effect to that layer, so the Opacity becomes a blend with original for the entire effects of the stack. Now I'm going to type Shift+S to reveal Scale and scale down adjustment layer. As I do so, only a portion of my frame is going to get the effects applied to this adjustment layer. So I'm…

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