Screen Uniformity
Screen Uniformity
- Subject: Screen Uniformity
- From: Roger Breton <email@hidden>
- Date: Sat, 05 Nov 2005 18:28:45 -0500
Here is some data from my Eizo CG21 calibrated with basICcolor 3.1 and a
freshly re-calibrated EyeOnePro, measured with BabelColor ISO-3664 1600x1200
Brigtheness Uniformity pattern :
x y Y CCT
---------|---------|---------|------|---------
Center 0,3446 0,3565 102 5034
TopLeft 0,3445 0,3546 100 5033
TopRight 0,3468 0,3594 98 4964
BotLeft 0,3403 0,3507 97 5184
BotRight 0,3417 0,3565 98 5147
I confess it's the first time I study the uniformity of my Eizo since I
purchased it more than a year ago. So, I can't say for sure whether what I'm
seeing today is worse (can't presumably be better) than what I originally
got when I tool the wraps off the box. In terms of ISO-12646, the Luminance
variation seems to be well within the 90% target. But in terms of
chromaticity, I guess I'll have to translate the measurements to u' and v',
to conclude whether theses results are within the 0.01 of D50, as set forth
in Clause 4.8 :
> At the centre of the white image defined in 5.2 the chromaticity
> of the display should be set to that of D50; namely u¹=0,2092,
> v¹=0,4881 (as defined in CIE publication 15). The chromaticity
> obtained shall be within a circle of radius 0,005 from this point.
> The chromaticity shall also be measured at the other points
> shown in figure 2 and must be within 0,01 of the chromaticity of
> D50.
Anyone else wants to share their screen uniformity data?
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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