Graphics Programs Reference
In-Depth Information
Threshold
A pretty safe range for the Threshold
setting is anywhere from 3 to around
20 (3 being the most intense, 20 being
much more subtle. I know, shouldn't 3
be more subtle and 20 be more intense?
Don't get me started). If you really need
to increase the intensity of your sharpen-
ing, you can lower the Threshold to 0, but
keep a good eye on what you're doing
(watch for noise appearing in your photo).
The Final Image
For the final sharpened image you see
here, I used the Moderate sharpening
settings I gave earlier (Amount: 120%,
Radius: 1, Threshold: 3), and I used that
tip I gave you after the Portrait sharpen-
ing settings for sharpening women, where
I only applied this sharpening to the Red
channel, so it avoided sharpening her
skin texture too much (yet sharpened
her hair, eyebrows, lips, clothing, etc.). If
you're uncomfortable with creating your
own custom Unsharp Mask settings, then
start with this: pick a starting point (one
of the set of settings I gave on the pre-
vious pages), and then just move the
Amount slider and nothing else (so, don't
touch the Radius and Threshold sliders).
Tr y that for a while, and it won't be long
before you'll find a situation where you
ask yourself, “I wonder if lowering the
Threshold would help?” and by then,
you'll be perfectly comfortable with it.
Before
After
 
 
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