Operation Manual

566 | CorelDRAW X8 User Guide
To change an image to a duotone
1 Click a bitmap.
2
Click Bitmaps Mode Duotone (8-bit).
3 Click the Curves tab.
4 Choose a duotone type from the Type list box.
5 Double-click an ink color in the Type window.
6 In the Select color dialog box, choose a color, and click OK.
If you want to adjust the color’s tone curve, click the ink tone curve on the grid to add a node, and drag the node to adjust the
percentage of color at that point on the curve.
7 Repeat steps 5 and 6 for each ink color you want to use.
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You can also 
Display all the ink tone curves on the grid. Enable the Show all check box.
Save the ink settings Click Save. Choose the disk and folder where you want to save the
file, and type a filename in the File name box.
Specify how overprint colors display Click the Overprint tab, and enable the Use overprint check box.
Double-click the color you want to edit, and choose a new color.
You can load preset ink colors by clicking Load, locating the file in which the ink settings are stored, and double-clicking the filename.
Changing bitmaps to the paletted color mode
The paletted color mode, also called indexed color mode, is sometimes used for images on the World Wide Web. When you convert an
image to the paletted color mode, a fixed color value is assigned to each pixel. These values are stored in a compact color table, or palette,
containing up to 256 colors. As a result, the paletted color mode image contains less data than a 24-bit color mode image, and it has a
smaller file size. Conversion to paletted color mode works best on images that have a limited range of colors.
Choosing, editing, and saving a color palette
When you change an image to the paletted color mode, you can use a predefined palette, or you can customize a color palette by replacing
individual colors.
Saving conversion settings
After you choose a color palette and set the dithering and range sensitivity for changing an image to the paletted color mode, you can save
the settings as a conversion preset that you can use with other images. You can add as many conversion presets as you want.
The color palette you use is called the processed color palette. It can be saved for use with other images.
For more information about the predefined color palettes available for the paletted color mode, see “Palette types” on page 567. For more
information about creating and opening custom color palettes, see “Creating and editing custom color palettes” on page 293.