Retouching

There are several tools that are used for retouching, manipulating and adjusting photos, such as the clone stamp, eraser, burn, dodge, smudge and blur tools.^[25] The clone stamp tool samples a selected portion of an image, and duplicates it over another area using a brush that can be adjusted in size, flow and opacity.^[25] The smudge tool, when dragged across part of an image, stretches and smudges pixels as if they are real paint, and the blur tool softens portions of an image by lowering the amount of detail within the adjusted area.^[31] The eraser tool removes pixels from an image, and the magic eraser tool selects areas of solid color and erases them.^[25] The burn and dodge tools, which are derived from traditional methods of adjusting the exposure on printed photos, have opposite effects; the burn tool darkens selected areas, and the dodge tool lightens them.[31