Photoshop and Color Management - Color Management for Photographers - page 74

Fig. 2-11 Selecting Save
CMYK in this pop-up menu
will open a standard
Open/Save dialog box after
which an ICC profile will
be created and saved from
the custom CMYK
parameters entered in the
dialog boxes seen in Figs.
2-8, 2-9, and 2-10.
are selected depending on the desired use of the Grayscale document.
The gamma setting is for defining Grayscale documents that will be
output to some display system or viewed on the World Wide Web. A TRC
gamma of 2.2 would be most appropriate for viewing on a PC monitor
and TRC gamma of 1.8 would be appropriate for viewing on a Macin-
tosh, assuming that the displays are calibrated to those aim points. If the
document is intended for print, you can pick a dot gain setting. Dot gain
settings are for Grayscale documents that will be output to some kind of
printer where the dot gain is a known value (see Chapter 7). It is possi-
ble to use a dot gain setting for viewing Grayscale images or a gamma
setting for printing Grayscale images. However, in most situations, try to
pick a setting based upon print or screen usage.
When the Advanced check box in the Color Settings is applied in
Photoshop CS or More Options is selected in Photoshop CS2, a Custom Dot
Gain menu is available and operates just like the Dot Gain dialog box that
can be accessed in the CMYK Settings (see Fig. 2-12). Therefore, you
could output a target and measure the necessary patches to create a
custom Grayscale working space based upon these dot gain values. This