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Chapter 22. Print > Color reproduction basics

Color reproduction basics

A computer monitor displays additive colors by projecting red, green, and blue (RGB) light, whereas an offset press prints subtractive colors using CMYK or spot color inks. Obtaining good CMYK color reproduction on an offset press is a real art. The output image will resemble the onscreen image only if the monitor is carefully calibrated for that output device. Note: In this section, we’re discussing offset press output. For online imaging issues, see the next chapter!

Photoshop determines how to convert an RGB image to CMYK mode and how to display a CMYK mode preview based on the current settings in the Color Settings dialog boxes. Some of these dialogs are discussed on the following pages.


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