Re: apple colorsync support: PDF/X-1a, devicelink-profiles, output intents
Re: apple colorsync support: PDF/X-1a, devicelink-profiles, output intents
- Subject: Re: apple colorsync support: PDF/X-1a, devicelink-profiles, output intents
- From: Jan-Peter Homann <email@hidden>
- Date: Mon, 26 Mar 2007 11:31:40 +0200
Hello Klaus, hello list
My own experiments (more than 1,5 years ago) showed differents behaviour
between the colorsync functionality for quartz filters and for image
conversions.
During this period, it seems to be, that for PDF-files, colorsync is
assigning "GenericCMYK" for DeviceCMYK objects of PDF-files and not the
output-intent.
This may have changed in in the last 1,5 years..
Furthermore, I was not able to use devicelink-profiles for quartz-filter
conversions.
If I used the "Save as PDF/X-3" dialogue, colorsync tagged all
deviceCMYK objects in the PDF-file with "GenericCMYK" profiles and
changed it from DeviceCMYK to ICCbased colorspace.
For prepress workflows, this is a desaster !!!
For me, as a "mac-believer" since 16 years, is was hard to realize, that
Apple is ignoring the needs of professional graphic designers, prepress
people and print output providers in colorsync.
Tragically, it would be not a big amount of work for Apple, to enhance
colorsync to be a powerful tool for this former focus group of Apple users:
- Give us back the possibily to specify profiles for untagged content on
OS level
- impleemt a colormanagement policy comparable to Adobe CS 2
- support PDF/X-1a in quartzfilters
- Ad dialogues to use the output intent automaticly for softproofing for
PDF/X-1a and deviceCMYK-objects in PDF/X-3 in preview
- support of overprinting flags for preview and print output
- support of devicelink-profiles in quartz-filters
- easy and save possibility to print profiling targets without any color
conversion
- cooperation with printer vendors of CMYK(cmg) printerdrivers for
profiling.
After waiting years for such developments from Apple, I don´t expects
anything from Apple.
I guide my customers to use Apple colorsync only for the monitor profile
and use colormanagement into Adobe CS 2 and a professional RIP solutions
which handles overprinting correctly.
Regards
Jan-Peter
Klaus Karcher wrote:
Hi Jan-Peter,
you wrote:
I´m looking for following technical informations:
1) softproof of PDF-x1a files:
------------------------------
Is colorsync / preview able to softproof PDF/X-1a files which contain
an ICC-profile as output intent ?
You can use the ColorSync Utility to create a Quartz Filter for that
purpose:
- create a new filter
- add the color management component "Rendering Intent": absolute for
all data- all objects
- add the color management component "Convert To Profile". Choose your
monitor profile, "all objects" and "all data"
- choose in which Domains you want to use it: Applications, PDF
Workflows and Printing
- use the Filter wherever you want, e.g in the ColorSync Utility, in
Automator workflows or in the Printing/Preview Dialogs.
2) conversion of PDF/X-1a with devicelink-profiles ?
----------------------------------------------------
Is apple colorsyanc able to converts DeviceCMYK-objects in a PDF/X-1a
file with devicelink-profiles ?
AFAIK yes. ColorSync is able to handle DeviceLink profiles and PDF/X
files, so it should also be able to convert PDF files with DLPs
(didn't test this with PDFs yet, but with TIF images: it worked as
expected). You can even use it as "poor man's colorserver" if you attach
a conversion Script as Folder Action to a Shared Folder.
3) Embedding a new output intent
--------------------------------
Is apple colorsync able to embed after the conversion a new
ICC-profile as output intent ?
Once again with a Quartz Filter (but AFAIK it will alway create a X/3,
not X/1a file):
- add the PDF Retouche Component "PDF X/3"
- choose whatever OutputConditionIdentifier, Profile, ... you want
- If yes, where I can find some informations about it ?
e.g. if if you press the "?" button in the "Filters" window ;-)
Thank you
:-) Jan-Peter
You're welcome,
Klaus
--
--
homann colormanagement ------ fon/fax +49 30 611 075 18
Jan-Peter Homann ------------- mobile +49 171 54 70 358
Kastanienallee 71 ------- http://www.colormanagement.de
10435 Berlin --------- mailto:email@hidden
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