Screen Uniformity
Screen Uniformity
- Subject: Screen Uniformity
- From: Roger Breton <email@hidden>
- Date: Sat, 05 Nov 2005 18:47:01 -0500
For those interested, here's the BabelColor report (reformatted) on my Eizo
CG21 screen uniformity, measured with my EyeOnePro:
> Viewing Conditions Report
>
> TEST (ISO 3664): "Color monitors"
>
> BabelColor Version: 2.5.0
> Date: 2005-11-05
> Time: 6:35:41 PM
>
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> LUMINANCE
>
> Goal: "75 cd/m2 +"
> Tolerance: "Should be 100 cd/m2 +"
>
> Position Lum.(cd/m2) P/F
> Center 100 P
> Upper-Left 97 P
> Upper-Right 96 P
> Lower-Left 93 P
> Lower-Right 94 P
>
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> CHROMATICITY AND COLOR TEMPERATURE (CCT)
>
> Note: "Chromaticity in CIE 1976 UCS units"
> Note: "10 degrees Observer (CIE 1964)"
> ISO 3664 Goal: "D65 (6504 K)"
> User-selected White Point: "D50 (NOT as per ISO 3664)"
> Chromaticity tolerance (u'v'): "0.0250 radius"
> White Point reference (u'): 0.2101
> White Point reference (v'): 0.4889
>
> Position CCT_(K) u' v' u'_off v'_off u'v'_radius P/F
> Center 5051 0.2085 0.4908 -0.0017 0.0020 0.0026 P
> Upper-L 5058 0.2087 0.4901 -0.0014 0.0012 0.0019 P
> Upper-R 4962 0.2096 0.4924 -0.0006 0.0036 0.0036 P
> Lower-L 5224 0.2069 0.4876 -0.0032 -0.0013 0.0035 P
> Lower-R 5144 0.2072 0.4902 -0.0030 0.0013 0.0033 P
>
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> BRIGHTNESS UNIFORMITY
>
> Note: "Determined as per ISO 12646"
> Goal: "Over display: 90% +"
>
> Position Relative brightness
> Center 100%
> Upper-Left 97%
> Upper-Right 96%
> Lower-Left 93%
> Lower-Right 94%
> P/F: P
Looks like I was using the wrong u'v' chromaticity tolerance of 0.01? Here,
the tolerance is set at 0.025 in u'v'.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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