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Hiding and showing
THE EASIEST WAY to remove something from a picture is to erase
it. But the simplest way isn’t always best: once something has been
erased, it’s gone, and it can be hard to get it back. Using a Layer Mask,
on the other hand, allows us to hide part of a layer without ever
deleting it – which means we can choose to show it again later if we
change our mind.
There’s much more to hiding and showing picture elements than
merely painting them out on a mask. We can use all of Photoshop’s
tools and techniques to make layers interact with each other, using
different modes to allow us to see the layers beneath, or automatically
making parts of a layer invisible depending on their brightness.
A mastery of all these tools will make you a better Photoshop artist,
and put you more in control to make you both more efficient and
more effective.
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Photoshop CC