Re: NEC + apple
Re: NEC + apple
- Subject: Re: NEC + apple
- From: Andreas Kraushaar <email@hidden>
- Date: Wed, 10 Nov 2010 21:01:44 +0100
you might find this article interesting
"Why do colours sometimes fail to match visually, when they match
instrumentally?"
go to: fogra.org | Products | Download the PDF News Nr. 6 and 5
It is based on object colours and there is also an article for the
reason for self luminous colours (not yet translated).
But the main additional issue is the interaction of the backlight (LED
or CCFL) with the filters and the human colour matching functions
(sincere there are steep transitions especially in areas with "major"
changes among observers with normal colour vision
Andy
What is a Validation Print?
Fogra-Extra Nr. 16: "Colour Reliability in Digital Printing"
http://fogracert.fogra.org/index.php?menuid=89&downloadid=74&reporeid=0
Andreas Kraushaar
Dept. Prepress
Fogra Graphic Technology Research Association
Streitfeldstrasse 19
81673 Munich, Germany
On 9 Nov 2010, at 01:22, Roger Breton wrote:
This is my favorite topic -- among plenty of other favorites topics
in color
management... It's one thing that a system arrives at a desired
numerical
accuracy, it's quite another that this accuracy also translates into
visual
satisfaction. I'm using the term 'satisfaction' here because this
term, to
me, is more inclusive than the word 'matching'. Usually I would write
'visual matching', since this is the goal we're after. But the term
'matching' is quite open in the multiple meanings it evokes to many
people
-- I've seen things I was told 'matched' when, to my eyes, there was
a whole
ocean in between. So, I am trying to qualify the use of the term.
And by
using 'satisfaction', I want to acknowledge that many users are not
necessarily after the same Holy Grail I do. This said, the things that
affect the 'match' or that will determine the 'satisfaction' of the
observer
include, well, the observer him or herself -- of course --, but also
the
light, the light used to illuminate whatever is used to compare
against the
screen. There is also the characteristics of the substrate, in the
case of a
hardcopy proof, its colorants or pigments (Epson vs HP), the rendering
intent used to convert the 'monitor' colors, the nature of the
surround, and
so on and so on, there are just too many of these 'factors' which
mediate
our actual visual experience to ignore them when discussing
performance
(magenta cast, etc..). So, what's a good monitor calibrating/profiling
package to do for the user? Well, at the very least, get the right
numbers
under control, white point, gamma, gray balance. But once the
numbers *are*
under some control then, in my view, the better monitor/profiling
packages
will allow some "editorial" space for the user to manoeuver over and
beyond
whatever level of accuracy was obtained, through the software and the
instrument. Few packages allow this "post-calibration"
functionality. I
think only ColorEyesDisplayPro and basICColor Display allow this
capabilities? Oh! Eizo's ColorNavigator also offers this
functionality but
only on Eizo's monitors.
There are many schools of thoughts here. I like comparing a
ColorChecker to
my calibrated screens whenever I can, to give me confidence in the
system.
If I am 'satisfied' with the 'match' then I can come to trust the
screen.
Otherwise, I have to scratch my head and find ways to obtain the
kind of
match I want. It's not always possible but it's quite often possible.
My two cents / Roger
-----Original Message-----
From: colorsync-users-bounces+graxx=email@hidden
[mailto:colorsync-users-bounces+graxx=email@hidden] On
Behalf Of Kerry Mansfield
Sent: November-08-10 5:30 PM
To: email@hidden
Subject: NEC + apple
Hello List Members,
I have a bit of a conundrum and I'm hoping someone can offer up a
solution .
. .
I've just purchased the stunning NEC LCD 3090W-BK-SV and it's really
awesome. However, since I had used a 30" Cinema Display and a 23"
display
prior to the purchase, I now have a huge color difference between
the NEC
30" and the secondary 23" Cinema Display. I don't plan on using the
second
display for final color because it's obviously inferior to the NEC.
However,
when I try to calibrate the 23" it's way, way, way too magenta and I
cannot
get it to shift upon several attempts to profile. I was wondering
what (if
any) software might be out there to manually adjust the profile
towards a
greener version.
I'm using 2 different spectrophotometers - the NEC Spectraview "eye
one" for
the NEC and the old school Eye One for the 23" inch.
The shift is so different it's hard to have them sitting next to
each other
and I often use a second monitor when working in Lightroom so I
don't want
them to be that markedly different.
Any help would be greatly appreciated.
Thank you,
Kerry
| kerry mansfield pictures | c. 415.271.4504 |
www.commandk.com |
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What is a Validation Print?
Fogra-Extra Nr. 16: "Colour Reliability in Digital Printing"
http://fogracert.fogra.org/index.php?menuid=89&downloadid=74&reporeid=0
Andreas Kraushaar
Dept. Prepress
Fogra Graphic Technology Research Association
Streitfeldstrasse 19
81673 Munich, Germany
Telefon: +49 89. 431 82 - 335
Telefax: +49 89. 431 82 - 100
E-mail: email@hidden
Internet: www.fogra.org
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