Re: monitor uniformity questions
Re: monitor uniformity questions
- Subject: Re: monitor uniformity questions
- From: "edmund ronald" <email@hidden>
- Date: Sun, 17 Aug 2008 20:23:10 +0200
Off the top of my head I'd say no, you shouldn't expect much better
from this class of monitor.
Expect to pay double, maybe for a monitor with uniformity compensation.
My impression is that by conventional static image metrics
(uniformity, viewing angle invariance) monitors are getting worse, not
better at the same pricepoint; however they are getting more usable
for displaying video, and the gamut is getting wider.
On the other hand, maybe members of this forum will tell you that you
have a bad sample.
Edmund
On Sun, Aug 17, 2008 at 8:15 PM, Allen Furbeck <email@hidden> wrote:
> 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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