Mailing Lists: Apple Mailing Lists
Image of Mac OS face in stamp
 
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Colorsync-users Digest, Vol 2, Issue 34


From: Thomas Holm/Pixl <email@hidden>
Subject: Distiller, weird behaviour
To: email@hidden
Message-ID: <email@hidden>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Guys,
I'm finding it hard to create a setting in Adobe Distiller where I can tag different images with the correct profile when creating PDF's through Distiller 6, by writing a postscript file and dumping this on distiller or in a hotfolder.

Whether I select "tag everything" or"tag images only" the default working space profile is embedded (regardless of the original profile embedded in the image files) Tiff or EPS. I suspect this is because the Postscript CSA/CRD isn't corrrectly read or something along those lines.

I need to create PDF's which will retain the profiles though, and preferably by writing postscript. Any way around loosing the profile info?

Any takers?



The "Tag" settings tag uncalibrated objects, by definition. What you're after is preserving the original source space through your workflow, not tagging with a working space.

There are a few ways to do it, all depending on what's in your PostScript. If your PostScript has correct CSAs, Distiller should be able to parse them, but note that going from an ICC profile to a CSA and back again is not lossless.

If your original profile exists on your system, there are comments you can put in the PostScript CSA which distiller will parse in order to subsitute the ICC profile back into the file. There's probably documentation somewhere; the easiest way to figure it out is to print an image to PostScript using PostScript CM using Acrobat or Photoshop, and look at the comments embedded in the CSA. If you emulate those, it should do what you want. The profiles have to exist in a "standard" place on your system, standard enough that they will show up in Distiller's profile menus. The profiles need to match on description, colorspace, and copyright string. If they're CIEBasedABC profiles, the profile and the CSA data are compared, and the match is rejected if they are not approximately the same. The CIEBasedDEF and DEFG cases are more lenient, because of some very bad DEF/DEFG CSAs produced by older software--in that case the profile can match based on just description string, colorspace, and copyright string. It uses descriptions and copyright strings rather than absolute file paths in order to have a better chance of working on different systems with the same profiles installed.

The last way only works on the just-released Distiller 7: distiller 7 recognizes the ICC profile embedding mechanism described in the ICC standard if "Process DSC Comments" is enabled. In that mechanism, you embed the actual ICC profile in PostScript comments. See the ICC spec for details.

--Peter

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/colorsync-users/email@hidden

This email sent to email@hidden


Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2007 Apple Inc. All rights reserved.