Adobe PHOTOSHOP 5.0 User Manual page 109

If you've changed one of the Setup dialog boxes,
use this command to maintain accurate color on
any open images. For example, if you've used the
RGB Setup dialog box to change the RGB color
space from sRGB to CIE RGB, you can select an
open RGB image and use the Profile to Profile
command to convert the image data from sRGB to
CIE RGB.
The Profile to Profile command is also useful if you
chose to ignore ICC profiles when opening files.
You can then convert the open file to your native
RGB space using this command.
Note: The Profile to Profile command can also
convert an image to a color space that does not match
the color settings in the RGB Setup or CMYK Setup
dialog boxes. However, this is not usually recom-
mended, because it can result in inaccurate on-
screen displays and can embed the wrong profiles in
saved files.
If you want to convert an image to an arbitrary color
space, and you are aware of these issues, hold down
the Alt (Windows) or Option (Macintosh) key when
selecting Profile to Profile. The To option will then
list all available ICC profiles.
To convert the color space of open images:
Select an open image.
1
Choose Image > Mode > Profile to Profile.
2
For From, choose the image's color space.
3
4 For To, choose the color space to which you
want to convert the image. Choosing RGB or
CMYK will use the color space information
defined in that RGB Setup or CMYK Setup
dialog box.
For Engine, choose a CMM.
5
6 For Intent, choose a rendering intent.
(See"Using ICC profiles to define the CMYK color
space" on page 87.)
If desired, choose Black Point Compensation to
7
map the darkest neutral color of the images
"From" color space to the darkest neutral color of
the images "To" color space rather than to black
when converting colors.
Click OK.
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ADOBE PHOTOSHOP 5.0 101
User Guide