Re: EIZO ColorNavigator and G7 validation
Re: EIZO ColorNavigator and G7 validation
- Subject: Re: EIZO ColorNavigator and G7 validation
- From: Dan Reid <email@hidden>
- Date: Sat, 07 Feb 2009 15:43:40 -0700
- Thread-topic: EIZO ColorNavigator and G7 validation
on 2/7/09 3:02 AM, Klaus Karcher at email@hidden wrote:
> Todd Shirley wrote:
>> I've always known that
>> cyan can't be accurately produced on a monitor so it makes me wonder
>> what the point of this validation routine is.
>
> I guess the point is to make one feel like buying one of those fancy new
> wide-gamut displays ;-)
>
>> It also makes me wonder
>> how soft proofing systems can be "certified" to GRACoL
>> (http://www.swop.org/certification/monitorList.asp ). I guess cyan and
>> cyan heavy greens don't matter?
>
> AFAIK the tolerance for primaries and secondaries is Delta E 2000 < 7.
>
>> Anybody else try to validate to GRACoL? Is my monitor way out of line?
>
> max Delta E > 20 seems to be somewhat high to me, but Delta E's > 10 are
> quite usual on "normal"-Gamut displays. I get DE76 =15.8 / DE00 = 6.3
> for 100% Cyan on an EIZO CG210.
>
> Klaus Karcher
>
I tried the GRACoL verification on my CG241.
The 100% cyan was 9.0 CIE76 but dropped to 3.5 when viewed in CIE2000. So
visually it may be "close" but measurement-wise it's still quite off.
I did notice in the prefs of ColorNavigator v5.2.1 that you can change the
measurement device's "compensation table." Normally it defaults to "color
management" but if you change it to "none" then you will get better results
in the validation process that uses Photoshop. I had a 3.5 CIE76 drop when I
switched it to "none" for the verification/validation routine. I used the
"color management" compensation table for calibrating/profiling the display.
BTW my settings were 140cd/m2, minimum black level, D65 L*.
--
Dan B. Reid
RPimaging, INC
Color Management Products and Training for Print, Internet, and Motion
Graphics
http://www.rpimaging.com | Toll Free: (866) RGB-CMYK
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