RE: Photoshop CS4 DeviceLink CMM Engine
RE: Photoshop CS4 DeviceLink CMM Engine
- Subject: RE: Photoshop CS4 DeviceLink CMM Engine
- From: Roger <email@hidden>
- Date: Wed, 29 Apr 2009 11:44:00 -0400
Marco,
> It seems, from what you write, that the existing tag structure for
> device
> links is not reliable enough to perform the desired function of
> indicating
> exactly which source and destination profiles were used to make the
> profile
>
> Marco Ugolini
In my replying to you I want to reply to Rolf, EricICC, Kai-Uwe, Chris,
Steve and all the others that participate in this thread.
I wouldn't say "reliable enough". I think we have to keep in context that,
at the time of the writing of the original ICC specs, in 1993, Photoshop
still lived in its own proprietary, non-ICC CMS. So, the way I see it, the
original intent of DVL's was strictly to process images in and out of the
PCS in a fixed, efficient and automated way. There couldn't have been any
need then for wanting to assign a Destination profile over and above what
the final device values were, ready for imaging. Today is a different story
and it's obvious that some assigning mechanism is required, at least in
applications like Photoshop. I don't believe command-line CMS utilities like
Argyll automatically retrieve the Destination profile out of a DVL and
automatically assigns it along the way to the transformed images for the
purpose of embedding? I'll have to revisit the online documentation to be
sure. But most commercial link-processing applications like Alwan or Kodak
or LOL clearly have the extra code necessary to "close" the loop on
identifying the Destination profile in processed images. At any rate, it's
not a vey big issue for Adobe engineers to add an extra pull-down menu to
identify the Destination profile in the DVL dialog but I suspect they'd
rather wait for a more elegant solution from the ICC not to clutter their
GUI.
Roger
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