monitor uniformity questions
monitor uniformity questions
- Subject: monitor uniformity questions
- From: "Allen Furbeck" <email@hidden>
- Date: Sun, 17 Aug 2008 14:15:16 -0400
Hi folks, Since this is my first post, perhaps I should introduce myself. My
name is Allen Furbeck, and I just completed a master's program in digital
photography at The School of Visual Arts here in NYC. Chris Murphy taught
the color management class, and Andrew Rodney was kind enough to do a guest
lecture for us. I've been lurking here since Chris recommended the list to
me about 8 months ago, but as I said this is my first post. My color science
skills are probably intermediate at best, but I have been both painting and
making photographs for 30 years, and have a pretty good eye for color and
the issues that it raises.
I just bought a NEC 2490 w/spectravision software, and in general I like the
monitor, but I'm a bit iffy as to whether I should be expecting more color
and tonal uniformity across the screen. Visually, it is clearly both bluer and
darker moving from the center of the panel to its corners. The monitor has
an adjustment in the OSM called colorcomp which compensates for this and
does a fairly good job especially with tonal variation. (Does anyone know
how this adjustment works? It seems a bit like black magic to me) There is
still, however, a noticeable amount of variation especially in the corners,
and especially with an all white screen. I tried measuring this with an
i1Pro and i1Share, although looking around today I see that Babelcolor may
be a better software for this. (With i1 I had to use the ambient light mode
without the ambient head to measure the screen) I did get readings that
seemed both significant and meaningful. There was a variation of as much as
300 lux and 300 degrees K with colorcomp on, and as much as 600 lux and 800
degrees K with it off. The variations from multiple measurements at one
source point were usually less than a couple of lux or within a range of
about 20-30 degrees K.
So my questions are:
1. Would I really get any better data from Babelcolor? (I might buy it
anyway just because it looks like a cool and useful tool, but I'm getting a
bit tired taking readings off of this monitor) And what should I really be
measuring; luminance, color temperature, L*a*b* values, all three, or
something else?
2. Should I be expecting any more uniformity from this monitor? Is there
anyone else who has one? And, if so, how uniform does it appear to you?
Thanks in advance for any advice you might have,
Allen Furbeck
--
Allen Furbeck
508-526 West 26th Street, Studio 7D
NY, NY 10011
212 807 7594
allenfurbeck.com
email@hidden
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