Apple Aperture 2 - Manual (Page 374)

374 Part III Performing Image Adjustments
4 Click a red eye in the image to place a Red Eye target overlay on it.
The Red Eye target overlay is placed over the red eye, and the red pixels within the Red
Eye target overlay are desaturated.
5 Repeat step 4 until all of the red eyes in your image are corrected.
Adjusting the Size of Red Eye Target Overlays
Aperture fixes red-eye in your images by desaturating the red pixels within the Red Eye
target overlay area. It’s a good idea to fit each Red Eye target overlay to the size of the eye
it covers. This prevents any red pixels in the skin around your subject’s eyes or in clothing,
such as a scarf or hat, from being affected by the red-eye adjustment. You may also need
to increase the size of a Red Eye target overlay to completely encompass the eye you are
targeting if the image is a close-up. You can adjust the size of a Red Eye target overlay
before and after it’s placed on the image.