Question on LCD response times

[Inappropriate4AT]

Article

"A 16ms LCD monitor corresponds to 63 images per second, while 12ms is equivalent to 83 images a second."

Does this mean if you have an LCD with a 16ms response time, even if it runs at 75-85hz, to the naked eye we'll only really be able to see 63 frames per second?

 

[Murst]

Response times have nothing to do with images per second.

Response times measure how fast pixels can change. Furthemore, the current system of ranking response times is measured by best-case. So even though you'll see a 12ms response time, chances are that the actual average response time is around 20ms (or higher). Still, an average response time of a 12ms lcd is quicker than the average response time of a 20ms lcd.

This is, at least, how I understand things.

 

[AluminumStudios]

Originally posted by: Murst
Response times have nothing to do with images per second.

Response times measure how fast pixels can change.

This is, at least, how I understand things.

If response time is how fast pixels can change, then it would seem to me that it has everything to do with frames/sec because the entire screen could only change as fast as the pixels, and if that is limited, than the number of times per second the screen can change is limited too.

16 ms = .016 of a second to change. 1 / .016 = 62.5 possible changes in a second
12 ms = .012 of a second to change. 1 / .012 = 83.3 possible changes per second

I don't keep up with LCD at all, but what you heard Inappropriate4AT sounds reasonable to me ...

I personally do a lot of graphic, video, and animation work and really don't like LCDs for it.

 

[Inappropriate4AT]

I want an LCD for the portability, it's a lot easier to lug around a 17" LCD than my 19" CRT. I owned a 15" with a 25ms response time and there was noticable ghosting in FarCry. I don't mind a little ghosting, I'm just mainly concerned about frames per second, I was gonna grab up a 16ms LCD, but if what I'm assuming about only being able to see 63fps based on what the article states is correct, I might have to go with a 12ms one, but those are pricey.

 

[Velk]

Originally posted by: Inappropriate4AT
Article
Does this mean if you have an LCD with a 16ms response time, even if it runs at 75-85hz, to the naked eye we'll only really be able to see 63 frames per second?

Sort of - you can't set them to 75-85Hz, 60 is the only refresh available to the monitor when connected via DVI, probably for exactly that reason.

 

[scaryclownsarefun]

i think that you guys are thinking about random colors. response time measures how fast a pixel can change from black to white to black. so naturally, the faster that is, the better your display will look. i do not think that it has anything to do with your max FPS or refresh rate. most of the time only a few of the pixels have to change from fram to frame (say, walking around in a farcry level, most of the time eveything is green) and so when the image changes, some of the pixels may not keep up with the frame that is supposed to be displayed. when lots of pixel's do this, it may be alot more visable, and you will see gosting.