Someone help me out with LCDs response time...

[AlexKN1]

Basically...what response time the LCD has to have in ms so in 30FPS there would be no motion blur...perfectly fine like a good CRT?

 

[JZilla]

Theoretical: 1000/30 = 33,33 fps.

But the whole response time thing is very subjective. Some people can see blur even at 16ms, others can't. And in the other end of the spectrum, some people can't see blur at 30ms. So I guess it's really down to the monitor and not the response time (not that the response time isn't important).

So go down to a shop, take a look and buy the one you like. But if you want one that is "perfectly fine like a crt", I suggest you look for a 16ms monitor (or at the highest 25ms), then it will be a little bit harder to go wrong.

 

[Mem]

It depends on the size of TFT you want,at the moment the fastest 17" models are 16ms which are the best you can get for gaming,the 18 and 19" TFTs are 25ms at the moment(faster models down the road some time).

Maths is easy to do (as JZilla stated)1000/25ms= 40fps
1000/16=62.fps.

If you give us the size of TFT(LCD)you want and price, we can suggest some good models.

 

[AlexKN1]

so if 1000/16 is 62.5fps

then how come people see blur...when object moves..is something else than..some other spec than the crystal refresh time..

second question...I dunno how CRTs work..but all I know that u put refresh rates like refresh rate 60hz..is pretty horrible..u can see the screen flicker..but at the same time..even if u play games at that rate..there is no motion blur or anything.. to my guess is that we don;t see motion blur or anything because the light moves speed of light to the screen. ?

so then .. in LCDs..there is a setting to change refresh rate like 75hz...what is that for?

 

[Mem]

so if 1000/16 is 62.5fps

then how come people see blur...when object moves..is something else than..some other spec than the crystal refresh time..

16ms is the optimal speed of the TFT(max it can be ,but not the average),remember there`s many factors involved like DVI or analogue input used, some peoples eyes are more sensitive then others to ghosting,and some brands/models are better at reducing ghosting etc.

 

[AlexKN1]

so theoritically what the specs have to be for an LCD to have no ghosting..just like an CRT? You said the connection between the LCD and the computer..DVI should not cause this?
Only when digital to analog conversion?

 

[Mem]

so theoritically what the specs have to be for an LCD to have no ghosting..just like an CRT?

That`s like saying "how long is a piece of string?" some people can`t see any ghosting on 16ms monitors in gaming ,some can see very slight etc,I would guess that down the road 10ms would be perfect.

You should really try & go to the stores and see some 17" LCD 16ms monitors like NEC 1760NX,Hitachi CML174SXW with some fast FPS games on,and decide for yourself ,in the end it`s your eyes that`ll give you the most honest opinion.

 

[AlexKN1]

i'll prob see anything..between 60-120hz refresh on monitors i can identify them...i was never wrong..my friend had it 60hz i told him u have it on 60hz he looked it was.. i told once 75, got it right, 85, 100 got all right.. about 20 times..

 

[Mem]

Getting back to your question on DVI and analogue,some people see less ghosting with DVI then using analogue input(I guess it`s down to no analogue conversion needed),just like some people can see a difference with image quality using DVI rather then analogue input,this is where your eyes etc come into play.DVI in theory on LCDs will give you the best image quality etc.

 

[AlexKN1]

anything better than DVI?

 

[Mem]

With most LCDs you only have analogue or DVI(some LCDs don`t even have DVI input) which is digital,so DVI is the best you can get for LCDs.

 

[AlexKN1]

i hear a lot of people have ghosting in Quake 3...u as well know that Quake 3 can reach like 250FPS ..


so if the 16ms LCDs can do 68FPS... is it because the Frames/s are so high?

 

[JZilla]

That could be tearing, if vsync is off.

And don't worry about the 60 hz, on a lcd thats fine.