Painting changes the pixels in your images. Dragging a painting tool across an image changes the pixels under the brush stroke. These tools give you endless options to get creative with your images. Apply soft or hard-edged brush strokes of any color or material, paint with another image as a source, retouch images to correct colors or contrast, replace colors, or paint with picture tubes. You can also erase pixels to transparency.
All painting tools work on raster layers only. The painting tools are fully effective on greyscale or 16 million color images, but can be applied with limited results to images of other color depths.
You can also make a selection in an image and then use the painting tool to change only the pixels within the selection. For more information on selections, see Using the Selection Tools.
Setting Brush and Paint Options
Painting with the Paint Brush or Airbrush
Using the Brush Variance Palette
Filling Areas with Colors, Gradients, Patterns, or Textures