Originally Posted by agentdark45
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?
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:
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