Download PitStop Professional User Guide
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pitstop.bk Page 171 Thursday, July 24, 2003 4:15 PM Enfocus PitStop Professional User Guide a loss of detail in some regions. Over most of the tonal range, a close match is obtained. This method is suited for spot colors. A B Enfocus PitStop Professional enables you to perform the following spot color-related tasks: • Creating or editing spot colors • Remapping spot colors of a pixel image • Duplicating spot colors Creating or editing spot colors A=B Absolute colorimetric remapping clips colors outside of the gamut to a color on the gamut boundary (B). Colors which cannot be displayed in the target color gamut will be lost. You can use Enfocus PitStop Professional to create new spot colors in Adobe Acrobat or change their names or CMYK values. This approach has the advantage that it is easier to keep these colors consistent throughout your complete document, compared to managing the spot colors in the source files and your authoring and design programs. Graphics which you import into a desktop publishing program, for example, may have mutual differences in their spot color definitions. Or, the spot color definitions in these graphics may differ from those which you have defined in your desktop publishing program. To create or edit spot colors: 1 Create or open a PDF document with a colored object or text. 2 Select the object or text with the Select Objects tool ( ). 3 Choose Window > Show PitStop Inspector. 4 Click the Spot Color button. Spot colors Spot colors are colors which are printed with their own premixed inks. You can choose from several spot color systems and from hundreds of different spot-color inks. In spot-color offset printing, each spot color is reproduced using a single printing plate. In contrast, process color printing uses four inks only (CMYK: cyan, magenta, yellow and black) to reproduce all colors. If you print a spot color at 100%, a solid opaque color appears on your page (not a dot pattern). A tint of a spot color, i.e. a lightened spot color, is created by printing smaller halftone dots of the base color. Spot colors can provide excellent results when used for offset printing. For digital output or monitor display, however, spot colors are less well-suited and should be used with caution. 171