Datacolor User to User Support Group.

Using WinXP (SP3) and my Spyder 2 and with measured settings of 85 cd/m2; 5000 temp; Gamma 2.2; and ambient light in a dimly lit room I can not get both my Samsung 213T Monitors to match.

I have two Radeon 16xx cards each running one of the monitors.
The two cards differ only on that one has a fan.

As far as I can tell, after running the so called "calibration" many times I have scrupulously followed the instructions; maintained constant lighting (it's dark out) and while both monitors come up with something looking reasonable good they definitely are "not ready for prime time.

When I compare an image of a very fair skinned, light haired Caucasian woman across the two monitors, or one duplicated on each monitior I find one significantly more red than the other.  When I move a white window so it spans monitors it does not look the same on both. Etc.

A visual "eyeball" check here
http://www.lagom.nl/lcd-test/gamma_calibration.php
indicates gamma of 2.1 on one monitor and 1.9 on the other.

That is certainly enough to throw off sensitive skin tones.
While sort of close it's not right and I'd be nervous sending one of these images to another user even if they also had a calibrated setup.  After all - which one do I send. What's the point if I can't even get two monitors right in front of me to give reliable output?

What's going on here and how do I figure it out.?
How I can I make sure nothing is interfering with or intercepting my calibrations?

Thanks in advance for help and guidance.


 ....steven

Different gammas would make one much darker than the other, and not  
show up in whites. What you have is different white balances. Try  
calibrating both to native whitepoint and see what happens.

C. D. Tobie
Global Product Technology Mngr.
Digital Imaging & Home Theater
Datacolor.com
CDTobie@...

On Nov 23, 2009, at 7:06 AM, "Phiegze" <swp91011@...> wrote:

> Using WinXP (SP3) and my Spyder 2 and with measured settings of 85  
> cd/m2; 5000 temp; Gamma 2.2; and ambient light in a dimly lit room I  
> can not get both my Samsung 213T Monitors to match.
>
> I have two Radeon 16xx cards each running one of the monitors.
> The two cards differ only on that one has a fan.
>
> As far as I can tell, after running the so called "calibration" many  
> times I have scrupulously followed the instructions; maintained  
> constant lighting (it's dark out) and while both monitors come up  
> with something looking reasonable good they definitely are "not  
> ready for prime time.
>
> When I compare an image of a very fair skinned, light haired  
> Caucasian woman across the two monitors, or one duplicated on each  
> monitior I find one significantly more red than the other.  When I  
> move a white window so it spans monitors it does not look the same  
> on both. Etc.
>
> A visual "eyeball" check here
> http://www.lagom.nl/lcd-test/gamma_calibration.php
> indicates gamma of 2.1 on one monitor and 1.9 on the other.
>
> That is certainly enough to throw off sensitive skin tones.
> While sort of close it's not right and I'd be nervous sending one of  
> these images to another user even if they also had a calibrated  
> setup.  After all - which one do I send. What's the point if I can't  
> even get two monitors right in front of me to give reliable output?
>
> What's going on here and how do I figure it out.?
> How I can I make sure nothing is interfering with or intercepting my  
> calibrations?
>
> Thanks in advance for help and guidance.
>
>
> ....steven
>
>
>
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>
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