Originally Posted by orestesdd
Can someone educate me? What is IPS and how can I find out if the Samsung 50" H6400 set has it? By the way, the Samsung 50" from the H6400 series is a Smart/3D TV set. Thanks.
The main LCD display technologies in use are IPS and VA. All you really need to know is that IPS generally has better off-axis PQ but has poor black level and contrast compared to VA (VA contrast=3000, IPS contrast=1000).
, Samsung only use VA and LG IPS.
Most IPS are used for passive 3D whilst VA for active 3D, however Sony were using some VA for passive 3D in their top of the line models.
Passive 3D is less susceptible to crosstalk and is less tiring on the eyes because it doesn't keep alternating left and right eye views, but it generally loses half the vertical resolution as both left and right eye views are displayed at the same time on the screen, interlaced (glasses are passive and cheap). Active 3D is more susceptible to crosstalk and because it switches left and right eye views can create a perception of flicker which can be tiring if not generating headaches, but generally supports full vertical resolution (glasses are active and expensive requiring a power supply).
The question you are asking is really whether passive 3D (generally IPS) creates a better 3D result than active 3D (generally VA). There are pros and cons of each: I think only you can make that determination based on observation.
Sony did create a full resolution VA passive 3D TV in the 65X9000A model that was supposed to be spectacular, but the passive technology does not support full resolution on smaller screens although it can still look very good.
Hopefully in the not too distant future, glassless 3D will incorporate the best features of each technology.