Re: EIZO ColorNavigator and G7 validation
Re: EIZO ColorNavigator and G7 validation
- Subject: Re: EIZO ColorNavigator and G7 validation
- From: Todd Shirley <email@hidden>
- Date: Wed, 11 Feb 2009 11:55:20 -0500
On Feb 11, 2009, at 5:28 AM, Bob Frost wrote:
If I calibrate and profile the monitor to D50, L*, 140 cd/m2,...
I also have a CG210 and CG 211. Have you noticed that Eizo recommend
80 - 100 cd/m2? And that if you use over 100 cd/m2, your warranty is
invalid?
"The warranty period of the backlight is warranted only if the
monitor is used within the recommended brightness of up to and
including 100 cd/m2 with a color temperature between 5,000 K - 6,500
K................" - Eizo's website.
You might get different results if you used them within the
manufacturers recommended limits.
Hi Bob
I recalibrated at D50, L*, 100 cd/m2 and GRACoL validation reported
max dE76=17.2, Avg=3.1, white=0.2
Just for reference, when I was at D50, L*, 140 cd/m2, I got max
dE76=15.2, Avg=4.9, white=5.5
So while the lower luminance didn't help the out-of-gamut cyan and
green overprints, it did bring the average down some and the
whitepoint dramatically.
I looked up the CG211 at swop.org and there was only one system
(Remote Director) which certified a CG211 to GRACoL, and their ADS set
luminance at 160 cd/m2, so I tried that as well and got pretty much
identical results to 140 cd/m2. All three of these settings got the
max dE2000 just under 7 which means they would all "certify".
I believe that Remote Director goes with 160 because soft-proof
scenarios are often required to match a D50 light booth sitting
directly next to the monitor, and even at 160 the booth would have to
be dimmed to about 50% to get comparable luminance between hard proof
white and monitor white. I don't know if you can dim a booth enough to
match 100 cd/m2.
Many of our CG211s have a GTI D50 tabletop booth right next to them,
and after extensive testing we have found that the best white point
match between monitor and booth is achieved with the booth at 50%
brightness and the monitor set to 5400K, L*, 140 cd/m2. At this
setting, my Gracol validation reports:
max dE76=20.3, Avg=3.1, white=0.2
This gets the best match between hardproof and screen. We don't really
notice too much any problem with the cyans and greens, or maybe we've
just gotten used to it, but if that whitepoint (and thus gray balance)
shift, that is very noticeable. So, interestingly, neither what Eizo
or ICS recommend give us the best results in terms of visual matching.
-Todd Shirley
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden