Graphics Programs Reference
In-Depth Information
a document with an embedded profile that doesn't match the current
preferred working space, that profile will be discarded (see fig. 2-13). The
document is then saved with no embedded profile. If, however, the doc-
ument has the same color space as the currently configured working
space, that profile will remain embedded when opened or saved. As an
example, if we have a document in Adobe RGB (1998) and our RGB
working space is set to Adobe RGB (1998), Photoshop will open the doc-
ument, preview the document correctly, and save the document with the
Adobe RGB (1998) profile embedded. In any other situation, Photoshop
will remove the embedded profile.
Copying and Pasting Data
If a user were to copy and paste data from
one document to another document, both having the same working
space, the color (numeric values of the pasted data) will remain the same.
Therefore, when the policy is set to
Off
, paste conversions are always by
the numbers (not converted) within a color model (see the sidebar,
“Color Appearance versus Color Numbers”). The
Off
policy attempts to
keep the user from having to deal with profiles, but color management
can't be turned off in Photoshop. All this policy does is ensure more
untagged documents.
This policy can be useful in a production environment where a user
wishes to produce untagged documents. This is useful for documents des-
tined for the World Wide Web where the addition of a profile serves little
purpose. Most Web browsers don't recognize embedded profiles. In addi-
tion, the profiles will add several hundred kilobytes to the documents,
and most users want online graphics to be as small as possible. There-
fore, if a user sets the polices to
Off
and turns off the warning check, they
could speed up Photoshop in producing untagged documents.
Color Management Policy Set to Preserve Embedded Profiles
Opening Documents
This setting provides an option whereby the
embedded profile in the document takes precedent. When the
Profile
Mismatches
warning check box is on and the document doesn't match
the preferred working space, the default option in the
Embedded Profile
Mismatch
dialog is to preserve the color space of the document (see
Fig. 2-14). This setting allows the user to preserve (allow) the profile
embedded in the documents to be used. That is, if I opened a document
in ColorMatch RGB, but my preferred RGB working space was Adobe
RGB (1998), the
Embedded Profile Mismatch
dialog would appear due to
the warning check box. When presented with a Profile Mismatch dialog,
the top radio button (
Use the Embedded Profile
) is the default. All I have to
do is press the Enter key and the document opens in ColorMatch RGB
even though the document and current working space in the color set-
tings are not the same. I can still edit the document and when the I save
this document, the original profile will remain embedded (Preserved).
This is true for pasting data as well.
