Apple Aperture 3.5 - Manual (Page 248)

Chapter 7 Make image adjustments 248
Adjust the sensitivity of a Red Eye target overlay
When you target a red eye in a picture, Aperture automatically desaturates the area within the
target overlay circle. In a few cases, the area might be either slightly too large or slightly too
small (typically including a few pixels in the eyelid skin, or missing a few red pixels inside the
pupil). For these difficult cases, you can adjust the Sensitivity parameter to change the area
where desaturation occurs. For example, dragging the Sensitivity slider to the left by one notch
decreases the radius of the active area within the Red Eye target overlay by one pixel, and
dragging the Sensitivity slider one notch to the right enlarges it by one pixel.
After Sensitivity adjustment Before Sensitivity adjustment
(the eyelids are desaturated)
1 Click the Red Eye target overlay to select it.
2 In the Red Eye Correction area of the Adjustments inspector or the Adjustments pane of the
Inspector HUD, use the Sensitivity parameter controls to adjust the area within the Red Eye
target overlay where desaturation occurs.
Use the Sensitivity slider and
value slider to fine-tune the area
within the Red Eye target overlay
where desaturation occurs.
67% resize factor