View Full Version : a question onusing flat panel/TFT vs CRT
unclebob 06-01-2003, 03:13 AM I have a ViewSonic 19" flat screen CRT and work about 3 hours a day on it doing 3D stuff/internet .. coupled with about 4 hours of computer work at my job also on CRT.
So here is the question ..
Is there any benefit of using a flat panel over a CRT for doing CG and/or long hours in front of a screen ? (I sit about 2 1/2 feet from the CRT at 1024x768)
I've heard that flat panels cause less eye strain that do CRT's, yes or no ?
thanks for any input into this,
bob
btw ... I don't play any games on my system, just 3D stuff.
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DSedov
06-01-2003, 10:48 AM
That is 100 true. The refresh rate makes the muscule that rotates eye crystal contract and expend at a pretty high rate. Its nothig for the eye, but when you do this continiously it weekens the muscle. Btw, read in as a snapple fact: Eye makes 50 moves every second.
JustBrowsing
06-01-2003, 10:52 AM
I've got an 18" Sony LCD at home, and a 22" Iiyama CRT at work. I can spend literally all day in front of the LCD, no problem, whereas I'm always looking for excuses to get away from the CRT because it's much harsher to look at for long periods.
It's not so hot for games though (for the benefit of anyone else reading this) - it just can't change the colour of pixels fast enough for any rapid movement. But it is over 12 months old, so newer models may be better in that area.
unclebob
06-01-2003, 07:26 PM
hey thanks for the replys ... I'll prolly end up getting a flat panel because of the time I spend in front of the monitor. Thank y'all for verifying what I thought. I really do appreciate the input.
regards,
bob
dvornik
06-01-2003, 11:42 PM
Most people I see work at unacceptable refresh rates on CRTs. I would never go below 85, preferably 100 - then it's not that much of a strain. And make sure the picture is sharp and stable. Good professional CRTs with almost any modern videocard are not too bad for your eyes. I look at CRT screens for about 8 to 15 hours a day for the last several years and I only feel discomfort with bad quality or poorly configured monitors.
Theoretically LCD is better cause there's no refresh rate to talk about. However they ONLY look good with DVI connectors and ONLY at a certain resolution. The same LCD display connected with a VGA looks much worse and you lose whatever advantages the lack of refresh rate may have. Ditto in case you can't work with it's optimal resolution for some reason. The lag that was mentioned in the previous post (don't remember the proper term for it) is a valid concern even with high-end displays. You see several instances of the model and each axis and plain and gizmo while rotating viewports. Sure, it only lasts for a split second, but it's still there.
Mistyk
06-02-2003, 12:15 AM
Originally posted by DSedov
...when you do this continiously it weekens the muscle.
Permanently or temporarily?
DSedov
06-02-2003, 01:07 AM
Originally posted by Mistyk
Permanently or temporarily?
Permanently=) Well its not a secret that you can damage your eyes with CRT monitors. It is not true for all people. Ive been using CRTs since I was 12, and still not wearing eyeglasses. Though my mom's sight had weakened considerbly. It might be age dependent.
Apt Pupil
06-02-2003, 02:33 AM
There was something posted on Tom's Hardware about LCD reponse time and how newer models are aimed for gamers who don't like ghosting:
The CML174SXW is the best 17" LCD screen that we have tested so far. It combines the best features of its rivals, such as the quick response of the Iiyama AS4314UTG and the bright colors of the Solarism LM1711. This makes it a particularly powerful screen for gaming.
This screen's pixels has a response time of 16 ms, which is alot better then the usual 20-30 ms of other LCD's.
You can find two articles - here - (http://www4.tomshardware.com/display/index.html) at the top of the page.
LCDs have an optimized resolution since they use Pixels for a 1:1 ratio and not a ray when displaying an image. And they don't HAVE to be DVI to be worth it.. I use dual Analog Envision 17" LCDs. They look and perform fine (gaming or working). Pixels only get so sharp. I have yet to see the benifit of the extra cost for DVI, let alone a card with Dual DVI. If you can afford it though, by all means. And I can tolorate looking at them all day without eye-strain. CRTs though, even at optimal refresh rates, still kill my eyes unless they are flat glass.
Ghosting and such are a rarity these days unless you have an old or really cheap LCD (TFT compered to XUGA, etc..). Or are trying to use a cheap plasma. Once you go flat, you never go back. :p
dvornik
06-02-2003, 06:18 AM
To be factual I must say i base my observations mostly on a whole bunch of Dell UltraSharp 1900FP, which are a somewhat downgraded version of Samsung SyncMaster 191T from what i understand, connected to Dell Precisions with dvi/vga Quadro2 pro cards.
DSedov
06-02-2003, 06:39 AM
I have two 18" Dell Ultrasharps connected to Quadro4 900XGL and another one Iiyama 22" Visionmaster PRO 510 on another machine. God... what a difference.
BTW why is it a downgraded version of a syncmaster?
dvornik
06-02-2003, 07:13 AM
It looks exactly the same but it doesn't swivel vertically and doesn't have a USB hub. I don't have any inside info on that, but searching the web made me think it's a Dell-branded Samsung.
I like them, they work great for us, just want to make sure people realize there are certain issues with LCDs that they don't have with CRTs.
stephen2002
06-02-2003, 11:44 AM
if you can afford it go LCD, you will not regret it. Ghosting is almost a non-issue at this point. Yes, it used to be a major problem with older displays. I've seen some old displays that when you went to play a game you just couldn't see anything because the whole screen was a blur. This just isn't the case now at all. What I find is what little blur there is is benificial when playing games on underpowered hardware (such as a laptop) because the frame rate can be lower (20-30fps instead of 50-60) and the motion still seems rather smooth. It's like free motion blur :)
MattClary
06-02-2003, 02:05 PM
I have an analog 18" Viewsonic LCD and it's much easier on the eyes than my 19" Viewsonic PF 790 at work with a refresh rate of 85hz. Looking at an LCD screen to me is like looking at a piece of paper vs. a TV set.
unclebob
06-02-2003, 02:14 PM
Thank y'all again for the updates and information concerning LCD monitors. From what y'all have said I think I will make the transistion to one. Now I just hafta figure out which one I want.
Sony and Samsung are my choices when it comes to LCDs. I got the Envisions because they were the only 17" LCD sub 500 bucks at the time. They have been good to me, I just don't care for their massive frame around the screen. So I have been looking into the Samsung 17"ers with the half inch frame. Looks nicer when they are next to each other.
Viewsonics are nice, but bulky and expensive. Dells use rebadged Samsungs until you get past 19", then they are rebadged SGIs (the 21" is to die for.. goo... ).
Check out Cnets reviews of LCDs, its a good place to start. unfortunetly, they get their price quotes from some of the more expensive places (*caugh* CDW *caugh*).. :p
Its hard to find a normal LCD that doesn't spin, doesn't have speakers, and doesn't have all sorts of usb ports and such on it to inflate the cost.. I just want the screen..
Apt Pupil
06-02-2003, 08:26 PM
Originally posted by stephen2002
. . . and the motion still seems rather smooth. It's like free motion blur :)
I never thought of it like that:p
Mistyk
06-02-2003, 10:22 PM
Thanks DSedov!
Originally posted by DSedov
...my mom's sight had weakened considerbly.
During the time she has been using CRTs?
Morlankey
06-03-2003, 10:02 AM
Two days ago I bought a BenQ 17" LCD and it is probably the best monitor I have ever used. I hear that contrast ratio is less then CRT but I would beg to differ. I walked into a computer shop with dozens of monitors in it. There was one LCD monitor and the contrast was a huge amount better then the CRTs.
I would definitely recommend the BenQ 17" FP 767. I don't notice any trails at all (16ms respnse time) the contrast is simply awe-inspiring (500:1) and the black version just looks so kool (less then .5 inch boarder) As you cant tell. These settings are considerably better then stuff reviewed on Tom's Hardware site.
DSedov
06-03-2003, 10:12 AM
Originally posted by Mistyk
Thanks DSedov!
During the time she has been using CRTs?
Yup.. Now she feels much better. She even had headackes. So I bought a 18" Dell LCD for her.
acidboy
06-03-2003, 11:20 AM
Hey guys,
What LCDs are around that display 1600 x 1200 res?
Cause For me I really can't go under that. From what I've seen most\all of the LCDs that can do that res are 20\21" screens which are naturally damn pricey.
Though I'm tempted to shell out the money :drool:
In another thread Marc Andreoli was looking at a samsung 210t (21.3 LCD), which I can find little info on.
Anyone know any sites with reviews of such LCDs?
DSedov
06-03-2003, 11:28 AM
Originally posted by acidboy
Hey guys,
What LCDs are around that display 1600 x 1200 res?
Cause For me I really can't go under that. From what I've seen most\all of the LCDs that can do that res are 20\21" screens which are naturally damn pricey.
Though I'm tempted to shell out the money :drool:
In another thread Marc Andreoli was looking at a samsung 210t (21.3 LCD), which I can find little info on.
Anyone know any sites with reviews of such LCDs?
The 19" Dell does 1600x. Im not 100% positive on that. But its not even that pricy. Around 700USD
Mistyk
06-03-2003, 02:22 PM
Originally posted by DSedov
Yup.. Now she feels much better.
Good to hear. Thanks for the info DSedov!
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