User Guide

Using Image Effects274
only a specified set of colors in it. This
is useful for multimedia work, as well
as applications like silkscreening.
This effect can also be used to reduce
colors in an image so that it appears
correctly on the Web. For more
information, refer to “Working with
Posterize Using Color Set” on
page 411.
To posterize an image using a
color set:
1 Select a layer or area of the canvas.
If you want to apply the effect to
the entire image, select nothing.
2 Open or create a color set.
For instructions on creating a color
set, refer to “Using Color Sets” on
page 85.
3 Choose Effects menu > Tonal
Control > Posterize Using Color
Set.
The image is reduced to the colors
in the current color set.
Apply Lighting
The Apply Lighting effect lets you
shine one or more light sources on an
image.
Apply Lighting is like hanging your
artwork in a gallery and adjusting
colored spotlights to illuminate it.
Before and after Apply Lighting.
You can choose different lighting
effects from the Corel Painter library,
or you can create your own effects by
defining brightness, distance, color,
and other characteristics.
Once you’ve produced a lighting effect
you like, you can save it in a library for
use with other images.
Your computer must have a math
coprocessor to use the Apply Lighting
effect.
Applying Preset Lighting
Effects
The Lighting library contains several
preset lighting environments. You can
use these directly or as a starting point
for customized lighting.
To apply preset lighting effects:
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 > Apply Lighting.
3 In the Apply Lighting dialog box,
click a preset thumbnail.
The lighting effect is displayed in
the preview window.
4 When you are satisfied with the
settings, click OK to apply the
effect.