About Workflow; About Calibration - Adobe PHOTOSHOP 5.0 User Manual

80 CHAPTER 5
Reproducing Color Accurately
The CMYK Setup dialog box defines which CMYK
color space to use for editing and printing CMYK
images.
Even if you plan to print your files, you may not
need to do this step. Most low-end inkjet printers
and some other output devices accept RGB data
directly, and don't require that you define a CMYK
color space. If you are unsure whether your printer
is an RGB printer, see the documentation that
came with your printer or contact the printer's
manufacturer.
4 If you plan to work on grayscale images, enter
Grayscale Setup information as described on
page 95.
The Grayscale Setup dialog box defines whether
grayscale images behave as RGB images or
black ink.
If you want to control how Photoshop opens
5
and saves ICC profiles (color space definitions) in
files, enter Profile Setup information as described
on page 99.
The Profiles Setup dialog box specifies whether
ICC profiles are saved with files, and lets you
specify how to handle files that don't match the
working color spaces defined for Photoshop (as
described in the RGB Setup and CMYK Setup
dialog boxes).
This step is optional, particularly if you left the
Profile Setup dialog box at its default settings.
6 To fine-tune the CMYK settings you made in
step 3, print a pre-separated CMYK proof as
described on page 92. Then adjust the CMYK
Setup settings to match the proof as described on
page 92.
Note: If you defined your CMYK color space using
ICC profiles, your ability to fine-tune the settings
will be limited.
About workflow
Once you've calibrated your system and defined
your working color spaces, the normal workflow is
that any file that is opened or acquired is compared
against those defined color spaces. If it doesn't
match, the file is converted to the defined color
space. When you save an image, the profile of the
working color space is saved with the file so that
the file can be handled correctly with Photoshop
and other applications.

About calibration

Calibration is the process of adjusting your
monitor and Photoshop's color conversion
settings to compensate for factors that affect how
colors in the image appear on-screen and in print.
Calibration helps you do the following:
Display printed colors accurately on the screen.
•
With a well-calibrated system, the color correc-
tions you make to the image are an accurate
reflection of what will come out of the printer.