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cheap 17" inch monitor causes eyestrain, headache?

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inferno2000

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Jul 30, 2001, 12:44:47 AM7/30/01
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I have a cheap 17" Viewsonic monitor (E70, not the flat screen model).
Even though I set the vertical refresh rate to 85MHz at 1024x768,
prolong looking at the monitor makes my eyes water and a bit of
headache. I have not experienced such problems with my older 14" and
15" monitors.

I also noticed most of the 17" inch monitors in the market tends to
look slightly out of focus at resolution 1024x768 and above,
regardless of their prices (RM500 - RM900), whether flatscreen or
non-flatscreen, or brand (I have compared LG, QDK, Viewsonic, Acer,
Panasonic, Samsung, Philips, Mac, Sony, etc etc). The only 17" inch
display with clear focus at such resolution is LCD-based display
(RM2000+). Is this Moire effect, or is it just that this is an
inherent problem with high res?

Yowchuan Lee

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Jul 30, 2001, 2:11:31 AM7/30/01
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Have you checked with the local optician? :P

Ahmed Kamal

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Jul 30, 2001, 6:27:50 AM7/30/01
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Yowchuan Lee wrote:

> Have you checked with the local optician? :P

Well to be honest my LG Flatron was great- I could run it at 1152*1280
for 6 hours without eye strain- its probably because of the extra
coating, etc. which was put in to prevent eye strain. But I've heard bad
things about LG transformers- they apparently have a short lifespan but
I'm interested in hearing a 2nd opinion

XEQtor

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Jul 30, 2001, 8:27:57 AM7/30/01
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On 29 Jul 2001 21:44:47 -0700, infer...@my-deja.com (inferno2000)
scribbled something like...

Not sure if this can help. 19" here - Taiwan made (ie cheapo),
original OEM fr vendor. Res 1600x1200 32-bit. Large fonts settings.
Many yrs old. Not seeing/experiencing this. Not sure how to say this
but pics, vids & text all normal. Settings 5500 K temp, 93.8K/75 Hz
refreshes.

Hope this helps.

Cheers.

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Removal of NOSPAM prevents email rejection.

Simon

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Jul 30, 2001, 11:17:03 AM7/30/01
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On Mon, 30 Jul 2001 21:20:29 +0800, you wrote:

I don't quite agree with the technician, my Samsung monitor has been around for
say about 3 years, and it is still working perfectly fine except the case of the
monitor is a bit stained, doesn't look new anymore. It is turned on more than 15
hours per day, and it lasted me even up to this year. Manufactured in England.

I was actually looking into investing on some LCD panel, but they are too
pricey. The cheap model isn't particularly attrractive to me, they look like
X-ray if I view them from an angle. I have been doing quite a lot of research on
monitors recently because I think I am going to buy one very soon.

I have seen Philips and Sony monitors before, have you notice a very pale green
line across Sony Triniton monitor, it is clearer when you have white background
as your wall papers. But you don't see them on LG Flatron ;-)
I have limited access to Philips monitor, they look nice on LCD panel, but I
still prefer LCD monitors that come with two type of inputs as well as pivoting.

I personally find that we should not cut cost on monitors, it is more important
to get a good screen than to get a speedy CPU because we look at them more often
whereas the clockspeed difference of 100 Mhz doesn't make much of a difference
today (Well.. could be in some aspect, but ... not as much as monitors in my
oppinion). I think investing your money getting a screen which is both healthy
to your eye as well as comfortable enough for your viewing pleasure (big screen)
is more important than getting the best performer or the best vga card. Just my
oppinion.

Samsung 755s as well as 955s looks excellent and the price is about right.
Samsung 171MP LCD Panel looks excellent, price is a bit high but compare to
other similar model from other manufacturer, it is quite much cheaper.
I am eyeing on these model. Hopefully I can get myself a good monitor when I
start working which should be in a month time or two. ;-)



>Dear Simon,
>
>What do you think I should do about my LG Flatron though? The
>transformer is totally gone, and I can either replace it or buy a new
>monitor- I was thinking of selling it off for RM400, but I'm not sure if
>ppl would buy it....I've heard from the computer technician who's
>repairing it that LG and Samsung both have the same defective
>transformer- 2 year lifespan at most. He suggested I buy Philips or
>Sony, but those monitors are, well, darn expensive. What do you think?


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ad2

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Jul 30, 2001, 11:58:49 AM7/30/01
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hi there,
speaking of Eizo - I have one T660i-T have problem with no display on the
screen - do you happen by chance to know where I can send it for repair it
in Klang Valley?
thanks
"Celeron 300A" <as...@pd.jaring.my> wrote in message
news:3b657ec5...@news4.jaring.my...
> Yup, ure correct. The monitor really cause dizziness to most of "new"
> PC users, esp small coverage unit (14-15")
>
> My eyes oso got some problem on my old Tatung (Taiwan) 15" monitor.
> Since i change to Eizo Pro FlexScan F764-T, the 21" monster monitor,
> my eyes problems getting lesser than last time around.
> *sigh* costly.. the 2nd hand unit cost me RM3500! (onli 6 mths
> use,like brand new, cost the Dot Com co is out of business)
>
> Good, Max res can go 1600 x 1200, but i'm using at 1024 x 768 at 110
> mhz refresh rate, very comfortable lar.
>
> Go for some good 19" esp Eizo,Samsung, MAG or Phillips or ViewSonic.
>
> MAG 19" 810FD, Trinitron Tube, 0.24mm Pitch RM 1650
> Philips 19" Brilliance Real Flat 109P RM1980
> EIZO 19" F67 Flexscan Professional RM 2690
> Viewsonic 19" PF790 PerfectFlat RM2170
>
> Shop around and might find the perfect Monitor
>
> C300A


zombie

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Jul 30, 2001, 11:43:30 AM7/30/01
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Hmm... past experience tell me that high refresh rates has a higher chance
of causing eyestrain... can u confirm that for me please? Try setting it to
the extremes like 60 Hz.

regs,

--
Every mammal on this planet instinctively developes an equilibrium with
the surrounding environment, but humans do not......
Human beings are a disease, a cancer of this planet........
- Agent Smith

"inferno2000" <infer...@my-deja.com> wrote in message
news:a9390719.01072...@posting.google.com...

Celeron 300A

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Jul 30, 2001, 11:45:17 AM7/30/01
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Celeron 300A

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Jul 30, 2001, 12:08:05 PM7/30/01
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On Mon, 30 Jul 2001 23:43:30 +0800, "zombie" <kn...@pd.jaring.my>
wrote:

>Hmm... past experience tell me that high refresh rates has a higher chance
>of causing eyestrain... can u confirm that for me please? Try setting it to
>the extremes like 60 Hz.


huh, another nice article and true too......

http://www.dsi.com/graphicssubsystem.htm

Celeron 300A

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Jul 30, 2001, 12:07:28 PM7/30/01
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On Mon, 30 Jul 2001 23:58:49 +0800, "ad2" <ad2...@first.net.nospam.my>
wrote:

>hi there,
>speaking of Eizo - I have one T660i-T have problem with no display on the
>screen - do you happen by chance to know where I can send it for repair it
>in Klang Valley?
>thanks


sorry, i'm not from Klang Valley, i'm from Miri, Sarawak

C300A

Celeron 300A

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Jul 30, 2001, 12:00:44 PM7/30/01
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On Mon, 30 Jul 2001 23:43:30 +0800, "zombie" <kn...@pd.jaring.my>
wrote:

>Hmm... past experience tell me that high refresh rates has a higher chance


>of causing eyestrain... can u confirm that for me please? Try setting it to
>the extremes like 60 Hz.
>

Huh, are u sure dude? Never i came across that the lower rate is
better, it shoud be the other way round.

do a research know better.

"At the bottom of virtually all graphics card spec sheets is a matrix
showing resolution (for example, 640x480 or 800x600), display modes
(such as 256 colors/8-bit or 16.7 million colors/24-bit), and refresh
rates (such as 75Hz). Briefly, resolution describes the number of
pixels displayed onscreen; display mode, the color depth; and refresh
rate, the number of times per second the screen redraws.

Technically, these performance characteristics relate to the power of
the graphics chip set, the amount of onboard memory, and the speed of
the card's RAMDAC chip. Rather than getting entangled in technical
details, just make sure that the board supports a resolution
appropriate for your monitor, a display mode consistent with your
intended usage, and a refresh rate (at the maximum resolution you'll
use) that won't give you headaches—75Hz or above. Higher refresh rates
are better, but only up to a point. Paying extra to achieve refresh
rates in excess of 100Hz probably isn't going to make a visible
difference.

Figuring a target resolution is straightforward. For example, if you
have a 14-inch or 15-inch monitor, you'll typically run in 640x480 or
800x600 mode, increasing to 1,024x768 or 1,280x1,024 for a 17-inch
monitor, and 1,600x1,200 or higher for a 21-inch monitor.

If you plan on displaying any images at all, even those appearing in
your browser when surfing the Web, insist on 24-bit or 32-bit color.
The only exception is the occasional gaming system. Some gamers may
want to sacrifice visual quality for the additional frame rate that
running in 16-bit mode affords""

So, the best bet is Good VGA card (get TNT M64 cost juz RM135 nowadays
for good 2/3D performance--> good to play CS too but at 800x600 for
max performance under openGL) and get good monitor........

C300A


ad2

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Jul 30, 2001, 1:11:04 PM7/30/01
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ahh...well thanks anyway :-)

"Celeron 300A" <as...@pd.jaring.my> wrote in message

news:3b658623...@news4.jaring.my...

Wahlau de NewsMan Away

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Jul 30, 2001, 3:28:27 PM7/30/01
to
On Mon, 30 Jul 2001 23:43:30 +0800, "zombie" <kn...@pd.jaring.my>
wrote:

>Hmm... past experience tell me that high refresh rates has a higher chance


>of causing eyestrain... can u confirm that for me please? Try setting it to
>the extremes like 60 Hz.

i will never go back to the extreme of 60 hz, after using my monitor
and pampering my eyes at 100hz.

thank you.


regards,
wahlau-eh ---> http://www.wahlau.org -----

-------------------------> got kangtao? <----

http://www.kangtao.com get your kangtao here!
=============================================

Simon

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Jul 30, 2001, 4:20:33 PM7/30/01
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On Mon, 30 Jul 2001 15:45:17 GMT, you wrote:

Aha. Since we just touch on refresh rate. Mind telling me (Well, anyone, not
necessary Celeron 300A), what does the refresh rate mean in LCD panel? I thought
at any resolution, the pixels are always lite on. Hence, refresh rate means
nothing on LCD panel? I am still quite blank as some manufacturer boasted about
the good refresh rate compare to the other manufacturer. What do they mean
actually?

It doesn't mean the response time of the pixel I suppose, does it? In my
oppinion, pixel refresh rate is much slower than refresh rate, hence, it doesn't
matter how high the refresh rate, the limiting factor is actually the pixel
refresh rate, no? But what the refresh rate in LCD panel means actually? The
maximum mode it can support, other than that?

Most importantly, what is the visual effect of having higher refresh rate or
lower refresh rate in LCD panel? I can't think of any, since the pixel is always
lite-on. Please enlight me.

Simon

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Jul 30, 2001, 4:10:36 PM7/30/01
to
On Mon, 30 Jul 2001 23:43:30 +0800, you wrote:

>Hmm... past experience tell me that high refresh rates has a higher chance
>of causing eyestrain... can u confirm that for me please? Try setting it to
>the extremes like 60 Hz.

Because the electron gun spray at the phosphor at 60 Hz, the screen is not
update fast enough, the image on the screen get fuzzy as it doesn't get update.
Cause you to have eye strain after long period of use. On some cheap model of
monitors, whatever refresh rate you set to, it doens't make a significant
improvement.

But with the good monitors, when you compare 60Hz with a 120Hz, you see the
difference. The worst resolution would be 43Hz interlaced. You can have a try
refresh rate of 43Hz then try it again at 60Hz, 72Hz and 75Hz..

72Hz is basically flicker free. But the more the better.
the higher it can support, the more maximum fps you can get on your games. Some
games quoting some fps something like 300 fps.. Your electron gun never spray at
that rate, hence, that is just a bogus number. you never feel that fps.

If your friend boasted about his VGA card that can do 200 fps, laugh at him ;-)
Tell him yours run at 75 fps, and let him compare screen to screen and ask him
whether the additional few hundred ringgit thrown to the drain is worth the
bogus number or not. ;-)
.

khang

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Aug 1, 2001, 3:15:14 PM8/1/01
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simple...
face your monitor straight and the middle (not too far, not too close),
looks straight to your monitor then move your eye sight upper and upper
until out of the screen (around 5cm top of the screen).

notice what happen to your bottom eye sight ? (especially you use 60hz
as refresh rate)
no, dont look down, your eyes should look 5cm top of the screen!

Simon

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Aug 1, 2001, 6:51:00 PM8/1/01
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On Wednesday 01 August 2001 15:15, you wrote:

> simple...
> face your monitor straight and the middle (not too far, not too close),
> looks straight to your monitor then move your eye sight upper and upper
> until out of the screen (around 5cm top of the screen).

> notice what happen to your bottom eye sight ? (especially you use 60hz
> as refresh rate)
> no, dont look down, your eyes should look 5cm top of the screen!

On LCD Panel you mean?
Will try that.

> > Most importantly, what is the visual effect of having higher refresh rate
> > or lower refresh rate in LCD panel? I can't think of any, since the pixel
> > is always lite-on. Please enlight me.

-----

Simon

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Aug 1, 2001, 6:36:13 PM8/1/01
to
On Wednesday 01 August 2001 15:15, you wrote:

> simple...
> face your monitor straight and the middle (not too far, not too close),
> looks straight to your monitor then move your eye sight upper and upper
> until out of the screen (around 5cm top of the screen).

> notice what happen to your bottom eye sight ? (especially you use 60hz
> as refresh rate)
> no, dont look down, your eyes should look 5cm top of the screen!

On LCD Panel you mean?
Will try that.

> > Most importantly, what is the visual effect of having higher refresh rate


> > or lower refresh rate in LCD panel? I can't think of any, since the pixel
> > is always lite-on. Please enlight me.

-----

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