RE: Where is monitor hardware calibration stored?
RE: Where is monitor hardware calibration stored?
- Subject: RE: Where is monitor hardware calibration stored?
- From: Roger Breton <email@hidden>
- Date: Thu, 06 Oct 2011 15:41:53 -0400
Hi Barry,
Your situation sounds familiar. I teach in a similar, tight university
security setting, also running XP but slowly migrating to Win7, with no
hope, neither, of ever switching to non-MS platform. It does not bother me
but, as you noted, it makes color managing monitors impossible. You're
right, the hardware calibration sits inside the monitor's own memory, But
that's only half of the equation because poor Photoshop needs to know what
kind monitor space conversion it needs to do in order to display color
accurately. So, if no corresponding ICC profiles are available for describe
the monitor color rendering capabilities, all bets are off. Yes, as far as
maintaining calibration is concerned, the Eizos and some of the LaCies will,
to my knowledge, obey that law. So that, if they are moved from one computer
to another, when brought back to life, their "color display" characteristics
will not change. What will change, and you can't do much about it in your
environment, is the system monitor profile that's associated with it. In
other words, it needs to be "reconnected" with the new host computer if
color-aware applications are to make sense of its capabilities.
I'd be curious how NEC MultiProfiler lives in an XP environment? I think, it
also needs to have admin rights in order to update its own profile? I know
it does under Win7.
Best / Roger
-----Original Message-----
From: colorsync-users-bounces+graxx=email@hidden
[mailto:colorsync-users-bounces+graxx=email@hidden] On
Behalf Of Wheeler, Barry
Sent: October-06-11 2:56 PM
To: 'email@hidden'
Subject: Where is monitor hardware calibration stored?
Hi -
We current use Windows XP with no hope of changing anytime soon. This makes
color managing our monitors difficult because XP requires admin privledges
to write a profile and to apply a profile. (These are two separate
actions.) Our security policies do not allow users adlmin rights making
color management very difficult.
But many of our QA workstations have Eizo or LaCie monitors which allow
monitor calibration via the monitor internal LUT rather than the video card
LUT. I wonder if either monitor stores current calibration data internally?
Apparently the LaCie monitor does because after admin calibration I find no
file in the profile directory yet our tests show the monitor is deplaying
colors correctly. The Eizo software stores a very small .icm file in the
C:\WINDOWS\system32\spool\drivers\color directory, but it doesn't appear to
contain full LUT data.
So my questions for only Eizo and LaCie monitors calibrated using Eico and
LaCie programs and spectros are:
Is calibration data stored in the monitor internally?
If so, is this sufficient? What advantage is gained through
an .icc profile?
Thanks,
Barry
F. Barry Wheeler,
Digital Projects Coordinator,
Office of Strategic Initiatives,
The Library of Congress
Washington, DC 20540
email@hidden 202 707 8581
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