636 Corel PaintShop Pro X7 User Guide
You can also create a black-and-white image by choosing
Adjust Brightness and Contrast Threshold. With this
command, the color depth does not change. For more
information, see “To convert a photo’s pixels to black and
white” on page 197.
To decrease the color depth to 16 colors
Edit workspace
1 Choose Image Decrease Color Depth 16 Color palette.
2 In the Palette group box, choose a palette option.
For more information about setting Palette options, see “Working
with image palettes” on page 641.
3 In the Reduction Method group box, choose a color reduction
method.
For more information about color reduction, see “Understanding
color reduction methods” on page 639.
Note: The Ordered Dither option is available only for the Windows
color palette.
4 In the Options group box, mark or unmark these check boxes:
• Boost marked colors by — when you have a selection in your
image, this option lets you make the colors in the selection more
important by a factor of the value you enter
• Reduce color bleeding — makes the left-to-right bleed effect of
colors less noticeable when you choose the Optimized Median
Cut or the Optimized Octree palette and the Error Diffusion
reduction method
5 Click OK.
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