13 Preparing Images for Two-Color Printing

Not every commercially printed publication requires four-color reproduction. Printing in two colors using a grayscale image and spot color can be an effective and inexpensive alternative. In this lesson, you'll learn how to use Adobe Photoshop to prepare full-color images for two-color printing.

In this lesson, you'll learn how to do the following:

• Convert a color image to monochrome, and improve its overall quality.

• Adjust the tonal range of the image by assigning black and white points.

• Convert a color image to grayscale.

• Add spot color to selected areas of the image.

This lesson will take about 45 minutes to complete. The lesson is designed to be done in Adobe Photoshop. ImageReady does not support channels or spot color.

If needed, remove the previous lesson folder from your hard drive, and copy the Lesson13 folder onto it. As you work on this lesson, you'll overwrite the start files. If you need to restore the start files, copy them from the Adobe Photoshop 7.0 Classroom in a Book CD.

Note: Windows users need to unlock the lesson files before using them. For more information, see "Copying the Classroom in a Book files" on page 4.

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Photoshop CS Mastery

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