Weetobix
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- 4 Dec 2014
- #1
I got myself a new main screen yesterday - a Dell U2713HM. Set it up, straight from the box it looked wonderful. I ran monitor calibration using my Spyder 3 pro and it now has a slight yellow tint which is really off-putting and looks a lot better without calibration. My second screen - a Samsung 24" that has also been calibrated using the same Spyder looks correct and there is a noticeable difference between them.
I have recalibrated both several times using the same ambient light settings as each other.
Current setup looks like this:View attachment 26218
Any idea what causes this and how I can rectify it without just turning calibration off?
Chappers
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- 4 Dec 2014
- #2
Try disabling the ambient light settings, and opt for a fixed level of say 120Cd/M2 and see if this helps fix the problem. I have a twin set up, and using exactly the same target setting I can calibrate both monitors to a very close visual setting, even though they are completely different models . My set up uses an X-rite Display and ColorEyes Display Pro software
arad85
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- 4 Dec 2014
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It may be the backlighting technology. I have a couple of Dell U2713H's here (the ones that can be hardware calibrated) and an i1 Display Pro. Even with the Dell supplied software, they calibrate incorrectly out of the box with a pronounced green tinge. This is because you need to compensate for the colour of the light the backlight outputs. In myu case, I had to edit an XML file to tell it that your monitor uses wide gamut LED backlighting. Now I'm not saying this is your problem, but it is worth googling if there are any known issues with your calibrator & the HM.
Box Brownie
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- 4 Dec 2014
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Hi
Of those with dual monitor rigs how many use a dual output card to drive both monitors and how many have two graphics cards?
The reason I ask is AFAIK dual headed cards have a single LUT in other words you cannot calibrate two monitors.
So is the OP trying to calibrate 2 monitors using a card with a single LUT???
arad85
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- 5 Dec 2014
- #5
Box Brownie said:
Of those with dual monitor rigs how many use a dual output card to drive both monitors and how many have two graphics cards?
The reason I ask is AFAIK dual headed cards have a single LUT in other words you cannot calibrate two monitors.
I have 3 monitors driven from a single card. Each output has an individual LUT and is independently calibratable. Unless your graphics card is from the Ark, the outputs are completely independent.
Pookeyhead
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- 5 Dec 2014
- #6
Which Spyder is it? They all play nice with wide gamut.
Box Brownie
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- 5 Dec 2014
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arad85 said:
I have 3 monitors driven from a single card. Each output has an individual LUT and is independently calibratable. Unless your graphics card is from the Ark, the outputs are completely independent.
Ah! I know that technology accelerates but out of the ark I suppose at about 4 years old that might be so 
but please do say which make and model number you are using?
neil_g
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- 5 Dec 2014
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agree with the others saying switch off the ambient light thingy on the spyders.
arad85 said:
I have 3 monitors driven from a single card. Each output has an individual LUT and is independently calibratable. Unless your graphics card is from the Ark, the outputs are completely independent.
spyder say you need a pci express graphics card for multiple display calibration. do the onboard i5/i7 gpu count as pci-e do you know andy out of interest?
OP
Weetobix
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- 5 Dec 2014
- #9
Cheers all - I will try turning off ambient light and report back.
Both monitors are supplied by a single nVidia 970GTX with 4GB VRAM
arad85
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- 5 Dec 2014
- #10
N
Box Brownie said:
Ah! I know that technology accelerates but out of the ark I suppose at about 4 years old that might be so
but please do say which make and model number you are using?
Nvidia 640. Can't recollect having a problem since I went dual monitor which was at least 4 years ago... And I'm always behind the curve on graphics.
arad85
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- 5 Dec 2014
- #11
neil_g said:
do the onboard i5/i7 gpu count as pci-e do you know andy out of interest?
Yup.. Pretty sure they do.
Ruben Carmona
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- 9 Dec 2014
- #12
To handle multiple calibrations on one computer, your graphic card needs more than one LUT (Lookup Table).
You can check with this tool:
http://support.datacolor.com/index.php?/Knowledgebase/Article/View/1431/90/gammatest---win
If both displays turn magenta, you only have one LUT and can therefore only have one monitor calibrated.
If only one display turns magenta at a time, everything is fine.
I use a Spyder4ELITE and have no problems to match my screens. Have to say they both use LED backlight.
I wouldn't turn off ambient light. If it is because of the ambient light compensation suggestions, you would need to calibrate both again to match them together and also to have them calibrated to your ambient light.
Brian G
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- 9 Dec 2014
- #13
arad85 said:
It may be the backlighting technology. I have a couple of Dell U2713H's here (the ones that can be hardware calibrated) and an i1 Display Pro. Even with the Dell supplied software, they calibrate incorrectly out of the box with a pronounced green tinge. This is because you need to compensate for the colour of the light the backlight outputs. In myu case, I had to edit an XML file to tell it that your monitor uses wide gamut LED backlighting. Now I'm not saying this is your problem, but it is worth googling if there are any known issues with your calibrator & the HM.
My X-Rite (Colormunki) incorrectly identifies my DELL U2412M as having a ccfl backlight, when it has LED.
X-rite say if you know what type your monitor is, for better consistency you should enter that, rather than accept the default setting.
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