The Spot Removal brush lets you repair a selected area of a photo with a sample from another area. When removing spots, you use two connected circles: the spot circle indicates which area to change, and the sample circle determines which area of the photo is used to clone or heal the spot.
This article describes how to use the Spot Removal tool in Lightroom 3 and 4. For help on the enhanced tool in Lightroom 5, see Enhanced Spot Removal tool | Lightroom 5.
To change the sampled area, drag the sample circle.
To adjust the size of the circles, move the pointer over the edge of the spot circle until it changes to a double-pointing arrow. Then, drag to make both circles larger or smaller.
To change the area being cloned or healed, drag inside the spot circle.
To hide the circles, move the mouse pointer out of the content area. You can also press the H key to hide and show circles. Hold down H for a few seconds to hide the circles until you release the key.
To delete a spot, select one of the circles and press Backspace or Delete.
To cancel the operation, click the Reset button in the Spot Removal options panel. Clicking Reset also removes all previously created spot circles.