Page 66 - Adobe Photoshop and Dreamviewer 2021

2. In the Channels panel (Window>Channels), make the Skyline Mask
channel visible.
Layer masks are not visible by default; you have to turn them on in the Channels
panel to see them. This isn’t strictly necessary, since you can paint a mask without
seeing it, but it is easier (at least when you’re first learning) to be able to see what
you’re painting. By painting on a layer mask, you’re not really “painting” anything;
instead, you’re actually “painting” the visibility of the associated layer.

Making the mask
channel visible allows
you to see the red
overlay in the image.

Depending on how you made the initial
selection, you might already see some
pixels that need to be added to the mask.

3. In the Channels panel, double-click the Skyline Mask channel thumbnail.
Change the Opacity value to 100% in the Layer Mask Display Options
dialog box, and then click OK.
Remember, this change only affects the transparency of the
mask, not the degree of transparency applied to the layer. By
setting the mask opacity to 100%, you know that anything
solid red will be hidden and anything with no red will be visible.

4. If necessary, click the click the empty space on the left side of the
Channels panel to make the Sunrise Mask channel visible.

There is a minor bug in the software that might cause the mask channel to be hidden
when you change the mask opacity.

78 Project 1: Composite Movie Ad