Apple Aperture 2 - Manual (Page 458)

458 Part III Performing Image Adjustments
 Click the left or right arrow in the Radius value slider to adjust the noise reduction by
2 percent increments, or drag in the value field.
The left arrow decreases noise reduction in the image, and the right arrow increases it.
 Double-click the number in the Radius value slider, then enter a value from 0.10 to
4.00 and press Return.
A value of 0.10 applies no digital noise adjustment to the image. A value greater than
0.10 reduces digital noise in the image.
4 Maintain edge detail in areas of high contrast in the image by doing one of the
following:
 Drag the Edge Detail slider to the right to increase sharpness in areas of the image
with high contrast, or drag the Edge Detail slider back to the left to reduce the
sharpening effect.
 Click the left or right arrow in the Edge Detail value slider to adjust edge detail by
2 percent increments, or drag in the value field.
The left arrow decreases edge detail sharpening in the image, and the right
arrow increases it.
 Double-click the number in the Edge Detail value slider, then enter a value from 0.00
to 6.00 and press Return.
As you change the parameter value, the image updates to display the amount of edge
detail sharpening applied to it.
Working with the Sharpen and Edge Sharpen Controls
Aperture provides two sharpen adjustments that you can use to sharpen the detail in
your image: Sharpen and Edge Sharpen.
Which Sharpen Tool Should You Use?
If you’ve already applied sharpening in a previous version of Aperture using the
Sharpen adjustment controls, the Sharpen adjustment controls are still there so that
your adjustments remain intact and unchanged. However, to do further sharpening
on other images, it is recommended that you use the Edge Sharpen adjustment
controls, which generally offer more precise control over how sharpening is applied.