Graphics Programs Reference
In-Depth Information
Radius governs how wide an area the Converter considers an edge. Its scale goes from
0.5 pixels to 3 pixels. Generally, the more fine detail in your photo, the lower you want
this setting to be.
Detail controls how the Converter applies sharpening. At 100—the right end of the
scale—the effect is similar to Unsharp Mask (in other words, you can overdo it if you
aren't careful). At 0, you shouldn't see any sharpening halos at all.
Masking is a very cool feature that reduces the area where sharpening takes place so that
only edges get sharpened. With a setting of 0, everything in the photo gets sharpened
equally. If you find that the Converter is sharpening more details than you like, then use
this slider to create an edge mask that keeps it from sharpening areas inside the edges.
The farther right you move this slider, the more area you protect from sharpening. As
you adjust this slider, the Converter does some amazing behind-the-scenes calculations,
so don't be surprised if there's a little lag in the preview when you move this slider.
The Masking and Detail settings work together to perform really accurate sharpening, which
is why their sliders go so high—you won't like the effect from just one of them set all the
way up, but by experimenting with both sliders, you can create excellent sharpening in your
photos.
TIP
As Figure 8-7 explains, you can get an extremely helpful view of your image if you hold
the Alt/Option key as you move the sliders.
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