Originally Posted by Servicetech571
So we're talking about a 0.03 second lag time right?
yep 0.030 - 0.045 typically for most LCD TV's in game modes, I'm not arguing that its too much for most people because its not.
most people cannot notice this small amount of lag, its equivalent to the amount of lag you would have on the internet when accessing a server within a couple hundred mile radius of your location or in other words playing on a game server that is local to you, your ping would be about 20-30ms and that is very fast and good
the problem arises when you want to play on other servers outside of your area (and this will be a great majority all of the time) and your ping will range from 50-100+ ms depending on a lot of variables at that point like how many hops to the server, if there's any network problems in between. how good/crappy their ISP is etc. etc.
the problem is by having a display that automatically extends your response time but that amount brings many servers that will be very playable at we'll say 60ms into the disadvantaged and often noticeable lag of 90+ ms lag
when your on a sever and everyone's around 40-60 ms ping just like you for the most part but you have a display with 30+ ms input lag your now at an extreme disadvantage. it messes up your timing with how far you must lead targets your shooting at as well as keeps you from actually seeing the enemy before they see you and yes online FPS games can be that fast paced that it will make or break your performance against other players
these reasons are why the PC gaming market raged against the LCD monitor manufactures when they came out with VA LCD's at near TN prices touting TN response time with a much better picture. they got the picture part right but they failed to realize that input lag caused by pixel response time compensation that was needed to keep VA panels from smearing due to poor natural response times they still suffer from today made them terrible for PC gaming because esp at the time (2002 ish) the vast majority and still a great majority of PC gamers play FPS games online and can tell when they go from a fast TN monitor to a laggy VA monitor right away. its clearly apparent to them because they are used to the near instantaneous response time of their old monitors.
because of this VA failed in the PC market because graphic professionals recognize that VA is inferior in color reproduction to IPS and most of all high end CRT monitors that are still used today for that sort of work so they simply had no place. the mainstream market has been and will always be pretty happy with using TN panels because they are super cheap, reliable and with current models have good enough color reproduction in most panels that its not a visible problem to them
by the way while i've taken this post this far i might as well explain one last thing about input lag and its primary non-reversible cause in todays VA TV's
Real Time Compensation or RTC for short is a method where the Panel's TCON actually takes and buffers a few frames (minimum 2 frames for 60hz LCD or 32ms time wise) and it then analyzes the frames so it can know ahead of time what pixels and where on the display need to be over-driven in order to basically force the pixels that will be changing in order to have them change state just enough without overshooting their target position. if these panels did not use this method you would see visible smearing on the screen because the pixels have a natural G2G response time in excess of 20ms in many common transitions
TN and IPS do not require this because they have good natural pixel response times
in the early days LCD monitor manufactures actually used overdrive on TN panels to drive response times down to 1ms but the problem was not input lag but they did not buffer the image signal and adjust for what was changing and simply applied the method to everything and it created a whole slew of visual glitches on the screen that were very unsightly like inverse ghosting and blank trails left behind fast moving objects