User Guide

Using Image Effects294
Tip
•
You can also specify Match and Fill
Colors by clicking a color in the image.
Sketch
You can use the Sketch effect to
convert an image to a black and white
pencil sketch.
The Sketch effect
To apply the sketch effect:
1 Select a layer or area of the canvas.
If you want to apply the effect to
the entire image, make sure there
are no selections.
2 Choose Effects menu > Surface
Control > Sketch.
3 In the Sketch dialog box, adjust
any of the following sliders:
• Sensitivity—determines sensi-
tivity to detail. Low values
detect only the main edges.
High values detect the main
edges as well as thin lines, such
as the lines around a person’s
eyes.
• Smoothing—determines how
much noise is filtered out.
Higher values result in wider,
lighter, and more blurry lines.
• Grain—determines how much
of the paper grain is revealed in
the sketch marks. Drag this
slider to the right to show more
of the paper grain.
• Threshold—the Threshold
High and Threshold Low set-
tings are used to remove noise
after edge detection. Threshold
High is used to flag light pixels
which may be just noise in the
image. Threshold Low is used
to test surrounding pixels.
If you want to save your settings as
a preset, click Save and specify a
preset name in the Save Preset
dialog box.
Focus Effects
The Focus commands in the Effects
menu let you create sharpening,
softening, motion blurring, and glass
distortion effects.
Camera Motion Blur
This effect creates a blur similar to
what you'd get in a photograph by
jostling the camera during a long
exposure. It's particularly effective
with an image showing lights on a
dark background.
Using the Camera Motion Blur to create
ablur.
To apply camera motion blur:
1 Select a layer or area of the canvas.