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This chapter covers features of Adobe Photoshop versions 4.x and 5.x for Windows 
and Mac OS. The illustrations show only Mac OS dialog boxes, but the information 
and instructions apply equally to the Windows version of Photoshop. 

Because Photoshop 5.x uses a sophisticated color management system, there are several 
setup steps you should take before you begin working. These steps include: 

• Calibrating your monitor

• Adjusting Photoshop 5.x color settings

• Setting ColorSync defaults (Mac OS only)

For information on monitor calibration and color setup in Photoshop (version 5.02 or 
later) open the Adobe Color Management Assistant by choosing Color Management 
from the Photoshop Help menu. (See your Adobe Photoshop 5.x documentation or 
Adobe’s Technical Guidelines for Photoshop on the internet at www.adobe.com.)

Photoshop 5.x has a control panel and three setup dialog boxes that control how color 
is managed when you open and save RGB and CMYK images. You should calibrate 
your monitor using the Adobe Gamma control panel, and specify settings in 
Photoshop’s Profile Setup, RGB Setup, and CMYK Setup dialog boxes before you 
begin working with images in Photoshop.

The Adobe Gamma control panel performs similar functions on both Windows 

and Mac OS computers.

You can use the Adobe Gamma control panel to create and customize ICC profiles for 
your monitor. Photoshop properly displays images on your monitor by compensating 
between your chosen working space (see the following section on RGB Setup) and the 
description of your monitor defined by its profile. If you do not create a profile in the 
Adobe Gamma control panel that corresponds to your monitor, you may encounter 
poor monitor-to-print matching.