Using the Unsharp Mask tool
You can use the Unsharp Mask tool to sharpen an image by
enhancing the contrast of medium- and high-contrast edges. You can
save your options as a preset
for future use.
To sharpen an image using the Unsharp Mask
tool:
-
In Edit Mode, on the Edit Panel, click
Sharpness, and then select
the Unsharp Mask tab.
-
Drag the sliders to enhance or fix your
image as described below.
-
Do one of the following:
-
Click Done to apply your changes and close
the Unsharp Mask tool.
-
Click Cancel to discard all changes and close
the tool.
Unsharp Mask options
|
Amount
|
Specifies the amount of light added to or
removed from each edge. Higher values produce darker edges.
|
|
Radius
|
Specifies the number of pixels to adjust
around each edge. Higher values increases the number of sharpened
pixels.
|
|
Threshold
|
Specifies how different the lightness values
of two adjacent pixels must be before they are sharpened. Higher
values increase the required difference. It is recommended that you
set the threshold so that it enhances edges while keeping
background noise to a minimum.
|
|
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