The clone stamp tool takes a sample of an image, which you can then
use to replace another part of the same image. Each stroke of the tool paints
on more of the sample image. Cross hairs mark the original sampling point.
Before
After
The door frame over this head was replaced with the color of the wall
over his left shoulder.
To use the clone stamp tool:
Select the clone stamp tool
Choose a brush size from the pop-up palette in the options bar.
Position the pointer on the part of any open image you want to sample,
and Alt-click (Windows) or Option-click (Mac OS). This sample point is the
location from which the image is duplicated as you paint.
Position the mouse pointer on the
location of the image where you want to make the replacement.
While holding the left mouse button down (PC) or mouse button down
(Mac), drag the pointer back and forth to edit the image.