Operation Manual

• Double-click the number in the Falloff value slider, then enter a value from 0.0 to 1.0
and press Return.
Use the Falloff slider and value
slider to adjust the strength
of the subsequent sharpening
adjustment.
The falloff percentage is applied proportionally to the second and third sharpening passes.
For example, if 0.69 (69 percent) is set as the Falloff parameter value, 69 percent of the
original amount of sharpening is applied during the second sharpening pass, and 69
percent of the amount of sharpening from the second sharpening pass is applied during
the third sharpening pass. In other words, only 47.6 percent of the amount of the original
sharpening is applied during the third sharpening pass.
You can also brush the Edge Sharpen adjustment on selected parts of an image. For more
information, see Making Brushed Adjustments.
Understanding the Edge Sharpen Workflow
The Edge Sharpen adjustment in Aperture is a professional tool that’s used to sharpen
photos. Using the Edge Sharpen adjustment controls in conjunction with the following
workflow makes it easy to achieve professional results.
To sharpen an image
1 In the Edge Sharpen area of the Adjustments inspector or the Adjustments pane of the
Inspector HUD, set the Intensity slider to the maximum value to see the effect of the
operation.
2 Adjust the Edges slider so you can see which parts of the image are being sharpened. If
possible, adjust the Edges slider so that edges are sharpened, but noise and texture in
the image are not affected.
3 Adjust the Falloff slider so that the edge sizes you want sharpened the most are
accentuated.
4 Decrease the Intensity parameter value until the sharpening effect is appropriately subtle.
Values below 0.5 usually work best.
Working with the Sharpen Controls
You use the Sharpen adjustment controls when you need to modify Sharpen adjustment
parameter settings that were applied to an image in a previous version of Aperture.
To sharpen an image using the Sharpen controls
1 Select an image.
2 If the Sharpen controls are not shown in the Adjustments inspector or the Adjustments
pane of the Inspector HUD, choose Sharpen from the Adjustments pop-up menu.
578 Chapter 17 Making Image Adjustments