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Crossover 30Q5 Pro Monitor Club~ - Page 26

post #251 of 357
Anyone planning to buy one of these:? (I don't know which video card they use yet, and I think it does only 30Hz@UHD)

Here's a pretty good article about it: http://nofilmschool.com/2013/04/seiki-4k-uhd-tv/
Edited by pmania - 5/10/13 at 9:37pm
post #252 of 357
Quote:
Originally Posted by agentdark45 View Post

Hey I just tried this profile on my 30Q5 and it seems waaaaaaaay too red/pink. I'm actually borrowing a friends calibrated Crossover 3020MDP (he used a spyder 4 pro), which is set up right next to my 30Q5 so I'm in a good position to test this.

The best ICC profile that matches the calibrated 3020MDP's display I've found so far is this one on TFT Central: http://www.tftcentral.co.uk/icc_profiles/crossover_27q_led-p_user2.icm

However there isn't enough red in that one - but still the closest I've come across by far.

I don't think it makes sense to use a profile calibrated on the 27Q because that monitor is LED backlit, and is not a wide-gamut panel. Those are significant differences with the 30Q5.

I performed a more thorough calibration using a larger number of color swatches today, which should result in a more accurate profile. The calibration was performed using an X-Rite i1Display Pro with a target of 6500K white point, 2.2 gamma, and 120 cd/m2 brightness.

I've attached the updated profile below:

Crossover 30Q5 2013-05-11.zip 20k .zip file
post #253 of 357
It would be nice to find a good set of RGB + Gamma settings that can be used directly in the Nvidia / AMD CP - that way it will work for 3D applications.
post #254 of 357
Quote:
Originally Posted by Mikkle View Post

I don't think it makes sense to use a profile calibrated on the 27Q because that monitor is LED backlit, and is not a wide-gamut panel. Those are significant differences with the 30Q5.

I performed a more thorough calibration using a larger number of color swatches today, which should result in a more accurate profile. The calibration was performed using an X-Rite i1Display Pro with a target of 6500K white point, 2.2 gamma, and 120 cd/m2 brightness.

I've attached the updated profile below:

Crossover 30Q5 2013-05-11.zip 20k .zip file

Thanks for taking the time to do this!

However the red tinting issue still persists (although not as drastic as before). I've uploaded a shot to show what I mean:



On the right is a Crossover 3020MDP 30" which has been calibrated by a friend using a Spyder 4 pro. On the right is my 30Q5 using your profile. You can clearly notice the excessive red tint. The gamma also seems to be way off 2.2 when using this reference image: http://www.lagom.nl/lcd-test/gamma_calibration.php

The reason I've settled on those crossover ICC's I linked in my earlier post was down to trial and error (not because they were specifically crossover ICC's). I tested a bunch of ICC profiles from TFT central and the one I linked gave the closest results to the calibrated Crossover 3020MDP display.

Perhaps your panel might be different to mine?
post #255 of 357
I ordered two of the Perfect Pixel 30Q5 Pro's from Lightnspace and I'm very excited for them to show up! I've got one question for you though:

Right now, my package has been retained at US Customs in L.A. Is this normal? The tracking message is: "Customs retention reason : Other." Should I call the office in the morning, or just see if it moves anywhere tomorrow? Gah, I'm impatient.
post #256 of 357
@Vpr99 did you BIN or make an offer to Lightnspace? If you made an offer how much were they? They seem to be one of the few who offers pixel perfect and a make an offer deal.
post #257 of 357
I BIN'd them for $560.5 a piece. I probably could have offered a bit lower, but I knew that these were the ones I wanted and Lightnspace has the best deal by ~40 bucks. I'll be sure to comment on the quality when (if) they arrive through customs.
post #258 of 357
Did you or has anyone else purchased a Square Trade warranty? And has anyone had to use there's yet?
post #259 of 357
I'm planning on getting one as soon as they arrive. It just seems like a pretty small price to pay for 4 years of warranty, especially since I've seen a fair number of failures on other Korean monitors right after the warranties expired. I'll let you know how the process is after I've done it.
post #260 of 357
Quote:
Originally Posted by agentdark45 View Post

Thanks for taking the time to do this!

However the red tinting issue still persists (although not as drastic as before). I've uploaded a shot to show what I mean:

(image)

On the right is a Crossover 3020MDP 30" which has been calibrated by a friend using a Spyder 4 pro. On the right is my 30Q5 using your profile. You can clearly notice the excessive red tint. The gamma also seems to be way off 2.2 when using this reference image: http://www.lagom.nl/lcd-test/gamma_calibration.php

The reason I've settled on those crossover ICC's I linked in my earlier post was down to trial and error (not because they were specifically crossover ICC's). I tested a bunch of ICC profiles from TFT central and the one I linked gave the closest results to the calibrated Crossover 3020MDP display.

Perhaps your panel might be different to mine?

This is tricky as there are a lot of things possibly at play here. There is always some variability in the panels, which could explain part (or even all) of it -- and which is why I hesitate to post the profiles I generate for my monitor. The picture you posted does look more pink than it should, but without hardware measurements it's also hard to say how well the 3020MDP on the left was calibrated. The Spyder series of colorimeters is also notorious for high unit-to-unit variability, and so I would be weary of using the 3020MDP as a reference and "eyeballing" it.

To give you an idea of how poorly the 27Q LED profile performs on my 30Q5 monitor, after installing it I measure a white point error of 30+ deltaE throughout the gray scale (red levels are off by 40%).

One thing I noticed this weekend while tweaking my calibration is that increasing the brightness setting on the monitor itself nudges the white point slightly towards D65. So I've obtained better results by maxing out the monitor brightness and calibrating from there. I'm not sure if this will hold for other 30Q5 units, but it's worth a shot.

I've attached an updated color profile below:

Crossover 30Q5 - 2013-05-13.zip 11k .zip file


Make sure you max out brightness via the monitor controls prior to using this profile.

Here are my post-calibration measurements:
Code:
Verification results:
Brightness error = -0.527398 cd/m^2 (is 135.472602, should be 136.000000)
White point error = 0.540734 deltaE
Maximum neutral error (@ 0.087885) = 1.309436 deltaE
Average neutral error = 0.500691 deltaE
Number of measurements taken = 100
The instrument can be removed from the screen.

If this still does not look good, the best thing to do would be to borrow your friend's colorimeter and run it directly on your setup smile.gif
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