Maybe this is one of the best screen I've had outside of high-end CRT 2000s ... But there are big problems and 900 I think it should not be the case ... After that 34 can take the advantage EN21 / 9 corresponds to a 27pouces and therefore too small for me, I pulled out my cheiveux when b'ai saw the huge clouding and light leak this screen! It is "inherent in the technology" bin yes but then sell much of craps and say she has a beautiful shape remains of ca crap! In short it is annoying! The dynamic is ultra rotten black base are clogged white Cramer, the brightness of the screen is quite small, no control of the backlight!?! But what is this delirium? No probe only works I have tried 2 and yet it is ecris 10,000 times in the manual and on the sites, and the list of supported sensors is not even available, yet the crap. After 5 months, more than his !! J'hallucine, and I would have to deprive me of my screen 3 to 6 weeks to repair! Sav crap The contat is sobering but ... It's a good pleasant and comfortable despite the visible clouding screen when the screen is dark and as I am after effects cc 2014-1 which is dark now tt ca bother! Oh yes also, the screen goes to sleep constantly at the slightest change of the blow frequency is not known whether the computer is on or not must wait a few seconds even if the screen does not go out in the meantime! Still a bad electronic management but it is the LG!