
Common options for effects 575
Changing effects with open panels
To experiment with an effect, you must display all required panels before choosing an
effect. For example, the Color Overlay effect combines the selected paper texture and
main color to define the overlay. If the Papers and Color panels are open when you
choose the effect, you can change paper grains and colors to create different overlays
before applying the effect to your image. Any changes in the paper or color appear in
the Preview window in the Color Overlay dialog box. You can move an effect’s dialog
box around on your screen, if necessary, for full access to other panels.
Applying effects using source luminance
With Corel Painter, you can apply some effects to an image by using the luminance
values of a specified source, which can include an external source or the luminance of
the image itself. The intensity of the effect on the image is based on the light and dark
values of the source. A larger degree of change to the light areas of the source, and a
smaller degree of change is applied to dark areas. For example, when you choose Paper
as a source, the effect is applied according to the light and dark areas of the paper
selected in the Paper Libraries panel. You can also choose a pattern or external image
(clone source) as a luminance source.
The luminance source options are listed in the Using list box and they vary between
effects. The luminance options can include:
•Paper
• Image luminance
• Original luminance (pattern or clone source)
•3D Brushstrokes
• Alpha channel or layer mask (Note: This option is available only if your
document has a channel or a layer with a layer mask.)
These options are explained in greater detail in the Help for each of the effects. The best
way to see how these options affect your images is to try them.
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