Corel Painter X3 Win/Mac, EDU, EN User's Guide Page 657

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634 Corel Painter X3 Getting Started Guide
To adjust dye concentration using a layer mask or alpha channel
1 Do one of the following:
• To use a layer mask, choose Window Layers, and click the layer that contains
a layer mask in the Layers panel.
• To use an alpha channel, choose Window Channels, and click the alpha
channel in the Channels panel.
2 Choose Effects Surface Control Dye Concentration.
3 Choose the layer mask or alpha channel from the Using list box.
4 Adjust any of the Dye Concentration controls. For information, see “Dye
Concentration controls” on page 634.
Dye Concentration controls
Minimum — controls the depth of the texture. The lower you set the Minimum
slider, the higher the contrast between the peaks and valleys. The higher you set
the Minimum slider, the flatter the image appears.
Maximum — controls the amount of dye on the peaks of the texture
If you think of texture as peaks and valleys, the Maximum slider controls the
amount of dye on the peaks, and the Minimum slider controls the amount of dye
in the valleys.
Applying the Express Texture effect
You can apply the Express Texture to generate a high-contrast version of an image in
grayscale, which creates a visual effect similar to a custom halftone screen, like a
mezzotint or line screen. When you use this effect, anti-aliasing is automatically applied
to the image.
You need to choose a method for applying the effect. There are five different methods
for applying Express Texture:
Paper — adjusts light intensity by using the paper texture as a mapping model.
If you want open to experiment with the effect, keep the Papers panel open
while you apply the effect. This way you can switch to different papers and
modify the paper controls.
Image Luminance — uses the image’s brightness as the model for the
adjustments
Original Luminance — uses the luminance of the clone source as the model for
the adjustment
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