User Guide

Chapter 8 Editing
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Unsharp Mask options
Blurring an image
You can use the Blur tool to apply different kinds of blur to an image, and you can save your options as
a preset for future use.
To blur an image:
1 In Edit Mode, on the Edit Panel, click Sharpness, and then select the Blur tab.
2In the Blur type drop-down list, select the type of blur to apply.
3 Specify the blur options as described below.
4 Do one of the following:
•Click Done to apply your changes and close the Blur tool.
•Click Cancel to discard all changes and close the tool.
Blur types
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.
Gaussian Produces an even, smooth blur.
Amount Specifies the amount of blur. Move the slider to the right to
intensify the effect.
Linear Produces a blurring effect that gives the illusion of movement.
Amount Specifies the amount of blur. Move the slider to the right to
intensify the effect.
Angle Specifies the direction of the blur effect.