Re: Eizo CG 21 and White Point...
Re: Eizo CG 21 and White Point...
- Subject: Re: Eizo CG 21 and White Point...
- From: email@hidden
- Date: Wed, 11 May 2005 11:02:29 EDT
In a message dated 5/11/05 9:36:48 AM, email@hidden writes:
Yesterday, in a color management seminar I led at the Quebec Institute of
Graphic Arts, in Montréal, during the screen profiling segment, we took two
G4s each connected to Apple 17" LCDs and placed them on a desk, side by
side, in between we placed a desktop GTI viewing booth. On both machines, we
installed and used iMatch v3 and freshly calibrated EyeOnePros. With chose
to calibrate the left LCD for D65 and the right LCD for D50. We then opened
up a CIE LAB D50/2 custom measured ColorChecker chart in Photoshop CS on
both machines -- the one you can find on Bruce Lindlboom site in TIFF --,
and of course, we placed the corresponding physical chart in the GTI booth
fo viewing under the GTI fluorescent lamps. There was no dimmer on the
particular GTI booth we were using. So the illuminance was was above P2
level, I think at 800 Lux. Still, there was no contest, all the 13
participants in the seminar chose D50 over D65 as the best match to the real
ColorChecker chart, irregardless of ambiant levels of light.
Is that testing methodology flawed?
No; it just doesn't factor general luminance into the mix. If your eyes are working in dim conditions, I would expect the 5000k monitor to be the better match, if your eyes are working in higher ambient light conditions, using more cone and less rod, so to speak, I'd expect the 6500k might be closer.
C. David Tobie
Product Technology Manager
ColorVision Inc.
email@hidden
www.colorvision.com
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