Getting b30" Apple and 27" Dell monitors to match??

[mbanstendig]

I have the Gretag Macbeth Eye One Photo UV Cut calubration package.

I cannot get my 30" Apple Cinema Display and my Dell 27" 2707WFP monitor to match.

The i1 software displays very nearly the same results after calibration of each monitor, which is 120 Luminance, 6500 Kelvin color temperature, and 2.2 gamma.

But the Dell is more greenish with some blue (higher color temp with extra green) and the Apple is more magenta (lower color temp). This is most annoyinM with large expanses of pure white or gray. But images do show the differences also.

I have been in touch with X-Rite/Gretag Macbeth tech support on this and they put me through hell. No change. There are differences in the monitors which the calibrator does not show/read, even when the results are the same. And the calibration instrument shows correct readings when I run their test software to check if it is working correctly.

X-Rite feels the Apple monitor is the closer one to the target settings. I would tend to agree. But cannot be sure just how ccorrect it is.

X-Rite has told me to contact Dell about this, which I will. But it remains that the calibrator does not register the greenish and reddish differences in overal color temperature. yet they feel it is proking correctly (it could be recalibrated for a price, but they don't feel that is necessary yet).

Does anyone have the same problem or has anyone solved this problem?

Anyone have the Dell?

Anyone have luck getting two different monitors to macth closely?

I have had problems getting other monitors to match each other, never with complete success. It is very frustrating.

Thanks, for input

Mark

[Robert Lunak]

Hi there

What i first noticed and didn´t know myself till last week, 120 luminance or cd is way too high ( i hope i am right now) i calibrate my eizo at 80cd and only use one screen for color correct work, the second monitor is just for tool palette and an old one ;-)

maybe if you try to set to 80cd and then recalibrate the two will match better coz they won´t be on the limit of luminance...

hope that helps, if you know anything else about luminance and/or if i am wrong, please tell

robert

[mbanstendig]

Something sounds wrong to me.

Going a little lower than 120 Luminance might have been believable. But going down to 80 simply sounds quite wrong to me.

My problem of matching two monitors is not a problem of matching luminance. I reach the same measured luminance on both.

It is the color cats that does not quite match.

Mark

[Robert Lunak]

hi there

i searched around yesterday and found some info about it on the eizo site...

they also write, 80cd...

my dealer where i bought the eizo is big in color calibration business, he also told me 80cd, possible between 70 and 90...

i know that the luminance is easily matched, but maybe the screen is to bright and get the color cast because of that...

have you tried how the brightness and the colors from your monitor fits to the colors on the print?

just give it a try, i think its worth it and it only takes about 15min :-)

best regards

robert

[mbanstendig]

First of all, the values one tries to achieve when calibrating are not arbitrary values one might happen to like. The purpose of color calibrating for serious people is to have a monitor (and other peripherals) that will match the norm out there in the photo/graphics/publishing/printing/and viewing world!

Please don't forget that!

Therefore, a target of 80 luminance is not practical.

Why?

Because Gretag Macbeth and EX-Rite, both before and after they joined forces, have been using and recommending a target luminance value of 120 as the default value for LCD monitors for about a decade now, or more.

There are a lot of work-flows and monitors with that target value of 120 luminance.

So, if you find you like 80 better, you will never see my photos or those of the bulk of calibrated systems the same way we are seeing them. And you will probably have problems with publishing and displaying etc., your work so that most people will see it the way you see it.

Even CRT monitors are recommended to be calibrated higher than 80.

That said, (JUST EMPHASIS, NOT SCREAMING) NO, THE LUMINACE VALUE HAS NOTHING TO DO WITH THE GREENISH COLOR CAST ON MY DELL MONITORS. The color cast does not change with higher or lower luminance.

Mark

[Robert Lunak]

ok, 120 is still according to the standard iso12646 for Graphic Technology -- Displays for Color Proofing -- Characteristics and Viewing Conditions

creativepro.com - The Darkroom Makes a Comeback

also 80 is still ok...

depending if how your printing enviroment looks like

ok, i didn´t know that the cast doesn´t disappears or is influenced by luminace, was just a thought

then try another cal software, i heard and read that there are quite big difference... i found a nice on, basiccolor display 4...

have fun

robb

[John_S_Chapman]

Are you running Mac or PC