Photoshop Tutorials - Stamp Tools
Stamp tools include Clone Stamp and Patter stamp. Clone Stamp tool is used to clone small fragments of the image to remove defects like dust, scratches and stains. To use the Clone Stamp tool move the mouse cursor to the area of the image that you want to clone and Alt+Click it. Then move to the area of the image that you want to correct with selected fragment and click on it. The size of corrected are depends on the size that you set in the options palette.
To achieve best results play around with Opacity and Flow settings and various Modes.
Pattern Stamp is a stamp that uses the pattern and works similar to the Clone Stamp, but you can set the pattern for it. This is done in the Options palette.
Select the needed pattern in the Options palette. Aligned option allows to align the pattern by its first brick. You can check Impressionist option to achieve artistic effect and set the pattern randomly. You will achieve tremendous results with this stamp tool if you will play around with modes and opacity.