Apple Aperture 2 - Manual (Page 386)

386 Part III Performing Image Adjustments
Working with the Spot & Patch Controls
You use the Spot & Patch tool and adjustment controls when you need to modify
Spot & Patch parameter settings that were applied using previous versions of Aperture.
Spotting Your Images
When the area around the blemish is continuous (such as a solid color) and doesn’t
contain a distinct texture, you can use the spotting method to obscure the blemish by
integrating the pixels that surround it. You fix a blemish by placing the Spot & Patch
target overlay over the blemish in the image and then adjusting the size of the target
overlay so that it just barely covers the blemish. By keeping the target overlay small,
you minimize the chance of a visual aberration in the final image. Aperture provides
additional parameter controls to allow you to adjust the softness, opacity, and amount
of detail in the cloned pixels, so that the corrected area looks as natural as possible.
Before Spot & Patch adjustment
(spotting) After Spot & Patch adjustment
(spotting)