News Viewsonic Announces 4-ms LCD Monitors

And if that isn't fast enough for you, you must be able to see image blur in real life... This from ExtremeTech:

Beginning in the second quarter, Viewsonic Corp. said it will ship a pair of LCD monitors with 4-millisecond response designed for high-performance gaming.

According to the Viewsonic web site, the company will ship two monitors: the 19-inch VX924, as well as the 17-inch VX724. Prices on the panels were not announced, although Viewsonic's vice president of Asia-Pacific sales and marketing, Allan Chang, told DigiTimes that the larger panel will cost approximately $549. Both monitors will ship in May and June, respectively.

More (as normal) here

 

and the 'response time' on a CRT monitor is what? 0? or close to it?
so lcds are still infinitely more slow than crts? hmmm...

but in all seriousness, thats pretty good. now all they have to do is make them have color that doesnt screw up as the distance and angle from your eye changes, and make them waaaay cheaper, oh and get the pixel count up, for better resolution, and.. blah

 

i have a 19'' hyundai imagequest FST which is great for gaming and browsing but im glad they have improved the speed, all they need now is a lower price, Ice

 

CRTs have refresh rates. Most monitors are set to 60Hz which equates to the screen refreshing every 16ms. If you have a low refresh rate you see flickering. With LCDs you get blur because each pixel stays on unless told to change. 4ms response time equates to something like 250Hz which is pretty damn quick. Of course you can't make this kind of direct comparison as each of these properties manifest themselves in different ways. Anyway it's safe to say that 4ms will be pretty close to CRT performance.

 

youre right, resresh rate ≠ response time. and purposely picking the lowest refresh rate you can SET crts to is a bad comparison.

 

Assuming that 4ms is rise+fall, and is achieved under any conditions at all it will only be black-to-white under perfect conditions, and may well have response times worse than supposedly slower panels for grey-to-grey which is what actually matters.

Comon LCD makers: stop making pointless claims and show us some GRAPHS.

 

Not that I'm super-knowledgeable about LCD panels, but the full article does say that the 4ms response time is for "grey-to-grey".

Here's a thread on CRT phosphors I found that seems to finish with someone who knows what s/he's talking about. Of course, the source quoted is somewhat out of date by now, but I'd imagine that they're still good ballpark figures, especially for commercial displays.

Anyway, flicker stops at around 45-50Hz. The illusion of continuous motion is achieved at around 20-25Hz. Am I the only one who can't see the point of a display that goes over about 75-100Hz? Wouldn't it make more sense to start working on better antialiasing and motion blur than higher framerates?

Nezuji

 

I see flicker up to ~65Hz... But my friend doesn't notice it at all at 60Hz. It's really just preception. Like I've never really noticed ghosting much, I can game on a 25ms+ panel without issue.

 

Perception of flicker is very subjective. I've never been able to stand looking at a screen refreshing at 60Hz, but several years ago could only see a display at 85Hz flicker from the corner of my eye.

However, having used a 21" monitor running at 120Hz as my main display for the last four years, I can now easily see the flicker when switching to 85Hz.

From my experience, the common flicker perception threshold in adults is around 75-85Hz.

And don't get me started on all the "the human eye can't see more than x fps" myths. Your eye may not, but I can distinguish between, say, a scene moving at 100fps vsynced on a 100Hz screen, and 120fps vsynced on a 120Hz screen. The eye and brain do not work at a certain amount of "fps", rather the millions of rods and cones on the retina continously and independently send information to the brain, and this information is continuously processed, not "frame by frame". Move your hand in front of your face whilst looking ahead; you'll see a smeared blur instead of defined steps, or "frames".

 

umm the "response time of a crt" is for all things considered damn near zero. CRT pixels "dont fade out" they are projected onto the tube , not really there as in lcds

IVe been running 2 21' crts for about 4 months now one set at 70 the other one at 80hz ( both at 1600x1200) and i must say that the 80hz one is easier to look at for extended amounts of time

 

Hmm, seems I underestimated other people's perception of flicker. Kind of makes me question though, why so many millions of people have put up with TVs that only refresh at 50-60Hz for so many years after faster refresh rates became available (devil's advocate )

I can perceive this distinction, as I imagine most people can. In fact, that principle is often exploited in film to create a sense of adrenalin-packed immediacy. That's why I was very careful to word my statement as, "The illusion of continuous motion is achieved at around 20-25Hz." That's also why I suggested improvement of antialiasing and motion blur over further improvement of refresh rates.

Maybe I'm wrong, but I thought that CRTs worked by firing free electrons at a screen covered in phosphor. The free electrons charge the phosphor almost instantaneously (microseconds), but it takes a little time (milliseconds) for the atoms in the phosphor to release that energy in the form of visible light, or to "fade out". If not, I imagine that there would be serious problems with making CRTs bright enough to see clearly and reducing flicker.

Nezuji

 

Well looks as though great contrast ratios are on the way

http://scitation.aip.org/getabs/ser...00086000012121107000001&idtype=cvips&gifs=Yes

10000:1, nice

 

Couldn't have put it better myself.

If you have a CRT screen, try setting your wallpaper to a uniform black and move your mouse around. You'll see a clear trail as the charged regions of phosphor take time to discharge.

This is even more evident if you've ever seen an old black & white TV in operation.

 

Read the info on the link and you'll see this:

 

I'm sorry, but be quiet. The electron gun in a CRT scans accross the screen a certain number of times per second in the horizontal and vertical planes.

You can calculate the vertical refresh rate (the practical, quoted figure) by the following formula:
fV = fH/ # of horizontal lines * 0.95

Besides, even without this factor you've got to take into account the speed of light between you and the screen, your mental response time, the electronic response time to the information from the cable and thousands of other factors... CRT response times are not "damn near zero", people don't notice them as much because the image doesn't ghost, it's either one or the other.