Photoshop provides a very quick and easy way to make a temporary mask that can, in fact, be edited. It's called Quick Mask, and one of its advantages is that you can see both the image and the mask at the same time. You can start with a selected area and use the painting tools to add to it or take away from it, or you can create the mask entirely in Quick Mask mode. Let's apply a Quick Mask to an image.
Try it YourselfCreate a Quick Mask Quick Masks are a great time-saver, as you'll soon see. Follow along to try them.
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If you think you might need the same mask again, you can save it after you've returned to Standard Mode by going to the Channels palette and clicking the Save Selection as Channel button at the bottom of the palette. (It looks like the Quick Mask button.) This saves your mask as an alpha channel. You can come back and reapply it as needed by Command+clicking (Mac) or Control+clicking (Windows) the channel.
Keep It Straight
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