Why can my CRT monitor play 2D video at ANY frame rates (24, 25, 30 fps, etc.) and at ANY refresh rates (60, 72, 85 hz, etc.) WITHOUT tearing, but my LCD HDTV/monitor (at 60 hz) CANNOT play ANY frame rates WITHOUT tearing?
I'm pretty sure it has to do with the response time, but I'm asking just in case.
Also, why does my CRT monitor tear only at HIGHER frame rates than refresh rates (e.g. 3D graphics (gaming) but not LOWER frame rates than refresh rates (e.g. 2D video (like I discussed earlier)?
2007-10-02 07:30:53 · 3 answers · asked by J.T. 1 in Computers & Internet ➔ Hardware ➔ Monitors
Tearing occurs when you skip a frame, or part of a frame because your frame rate is faster than your refresh rate. If you are running at a refresh rate of 60 Hz, and a frame rate of 90 fps then you have 1.5 image refreshes for every monitor screen refresh, so you end up with half of the next frame and half of the frame after that - so you get tearing where the two join.
Most games will let you syncronise the frame rate to the vertical refresh of the monitor to stop this.
The tearing on the LCD sounds odd. For tearing there should be no difference between an LCD at 60 Hz and a CRT at 60 Hz. LCDs do have much longer transition times than a CRT so that there may be significant blurring of movement, but tearing should be the same.
2007-10-02 09:50:50 · answer #1 · answered by Simon T 6 · 1⤊ 0⤋
Well the problem here is that you don't have LCD screens that are meeting your specs. If you get a good LCD screen, more expensive, and just because it is a brand name model does not make it immune to tearing. CRT will always have that advantage over LCD, LCD it is a technology issuer, because the screen refreshing means the screen has to be repainted pretty much pixel by pixel. So tearing will tend to happen. If you go to really pimp LCD screens however, and next gen as well (OLED screens) then you will not see so much tearing, and you will be getting ridiculous performance and refresh rates. But ya, you can't compare CRT and LCD screens using the numbers, it is just a different feel altogether. I use HDMI flat screen from ViewSonic and I love it on my main machine. My game machine still has a CRT monitor on it though.
2007-10-02 14:39:06 · answer #2 · answered by Anonymous · 0⤊ 0⤋
LCD is a slow technology, it takes time for the crystals to re polorise as the display changes.
Phosphur dots change much more quickly.
2007-10-02 14:43:04 · answer #3 · answered by David P 7 · 1⤊ 0⤋