User Guide

Chapter 5: Editing
163
Radius Specifies the size of the swirl effect.
Strength Specifies the strength and direction of the swirl. Higher values create a
clockwise swirl, while negative values create a counter-clockwise swirl.
Focus Specifies the concentration of the swirl. Higher values concentrate the
effect on the center of the swirl, while lower values spread the swirl across
the image.
Background
color
Specifies the background color of the filtered image. Select the Image
check box to use the original image colors, or click the color picker to
select a different color.
Swirl direction Specifies the direction of the swirl. Select one or both of the following:
x Swirl horizontally: moves the swirl towards the top and bottom of
the image.
x Swirl vertically: moves the swirl towards the right and left sides of
the image.
Applying the Threshold effect
You can use the Threshold effect to create a black and white image. You can save your options
as a preset for future use.
To apply the Threshold effect:
1. On the Edit Panel, click Effects, and then double-click Threshold.
2. On the Threshold tab, set the options as described below.
3. Do one of the following:
x Click Done to accept your changes and close the tab.
x Click Cancel to discard your changes and close the tab.
Threshold options
Threshold This slider determines which pixels become black and which ones become
white in the black and white image. Any pixels that are brighter than the
selected threshold will become white and any pixels that are darker than
the threshold will become black.