R0ach's tribute to VA panel technology

R0achTheWarHero

Limp Gawd
Joined
Jun 9, 2007
Messages
488
You see a lot of people complain about washed out colors on certain lcd's. Ever noticed what all these panels have in common? It's because PVA and MVA panels are usually sent from the factory at 1.8 gamma which is a lot brighter than the standard 2.2. If you actually calibrate a PVA/MVA panel with a 2.2 gamma it turns into a giant black blob. VA panel technology kinda sucks and isn't really that much different from TN. I been goin nuts trying to calibrate one myself with spyder2pro and it really blows having to choose from a) washed out or b) a black blob. AU and Chi Mei Tn panels do suck but next time you diss a TN panel think again if theres a Samsung in it because VA technology is no better.
 
I think he meant an LG.Phillips panel. They make the ones for a lot of NEC monitors.
Edit: I meant NEC. Thank you for pointing that out Travbomb
 
Indeed, LG.Philips is a distinct entity from either LG or Philips, although I believe both own some stake in the company. They specialise in S-IPS panels.
 
I think he meant an LG.Phillips panel. They make the ones for alot of Eizo monitors.

Eizo mainly uses PVA panels. When they use IPS they buy them from Hitachi.

NEC is the largest buyer of LG-Phillips IPS panels at the moment in desktop displays.
 
Thank you roach for your insight on VA technology (whose strengths and shortcomings have all been well documented here) but as an owner of both an S-IPS and P-MVA panel as well as a Spyder 2 Colorimeter...I suggest you dump you Colorvison "Pro" software in favor of Coloreyes Display Pro. Whatever "black blob" issues you have with VA will be a thing of the past.;)
 
Thank you roach for your insight on VA technology (whose strengths and shortcomings have all been well documented here) but as an owner of both an S-IPS and P-MVA panel as well as a Spyder 2 Colorimeter...I suggest you dump you Colorvison "Pro" software in favor of Coloreyes Display Pro. Whatever "black blob" issues you have with VA will be a thing of the past.;)

I don't really see that being possible because black crush is an effect inherent to VA panel technology. Instead of using a flat gamma you would have to use a special gamma curve designed specifically for that certain VA panel type or a much more thorough calibration test that checks gamma for each particular color type at different contrast levels and formulates a gamma curve off that. The spyder2pro program does check at different contrast levels but I believe it only creates a flat gamma curve regardless of the information obtained. I think with the proper gamma curve you could make the black crush effect look better but don't think you can defeat it.
 
Isn't black crush on *VA panel types an effect seen when the panel is viewed dead on? Any gamma curve that corrects this would surely make the panel washed out or crazy contrast when viewed from a non zero angle, I would think.
 
Back
Top