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[Official] Asus PB278Q & PB278QR Thread: Read the 1st Post - Page 63

post #621 of 1491
Thread Starter 
Quote:
Originally Posted by kanade96 View Post

?

There's nothing you can do about the LED PWM dimming except buy a different monitor. The ViewSonic VP2770 does not use LED PWM dimming, has less ghosting and the same-ish color, black level and viewing angle performance.

TN panels suffer from gamma shift and typically have lower average default gamma (the lower the gamma the more washed out colors and dark areas look) so dark areas on the Asus seem to dark by comparison when in reality they are correct. Don't touch the contrast, just turn up the brightness until you are comfortable.
Edited by MenacingTuba - 5/29/13 at 10:59pm
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post #622 of 1491
Quote:
Originally Posted by MenacingTuba View Post

There's nothing you about the LED PWM dimming can do except buy a different monitor. The ViewSonic VP2770 does not use LED PWM dimming, has less ghosting and the same-ish color, black level and viewing angle performance.

TN panels suffer from gamma shift and typically have lower average default gamma (the lower the gamma the more washed out colors and dark areas look) so dark areas on the Asus seem to dark by comparison when in reality they are correct. Don't touch the contrast, just turn up the brightness until you are comfortable.

Thanks I'll do that.

Yeah, I never thought PWM back lighting would be a problem for me but nevertheless, I'll get use to it and see how it goes. Actually, its not too hard to watch to the point where its "unwatchable". Just a slight restrain on my eye to cause a small headache.
post #623 of 1491
Thread Starter 
Why not just return it? If it's already causing you eyestrain and head aches it seems very silly to "get used to it," when there are other similarly priced options. If the ViewSonic is too expensive get the Dell U2713HM, it also does not use LED PWM Dimming.
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post #624 of 1491
Quote:
Originally Posted by MenacingTuba View Post

Why not just return it? If it's already causing you eyestrain and head aches it seems very silly to "get used to it," when there are other similarly priced options. If the ViewSonic is too expensive get the Dell U2713HM, it also does not use LED PWM Dimming.

Like I said, its just a minor irritation. I'm pretty sure it has to do with the size of the monitor (coming from 24).

I'll see if I can issue a refund but I highly doubt they will accept it as their return policy clearly states that they do not accept opened/used products regardless of any reasons.
Edited by kanade96 - 5/29/13 at 11:46pm
post #625 of 1491
Quote:
Originally Posted by kanade96 View Post



Regarding to returning, there is no way to return as the store's poilcy states how they do not accept returns for opened and used products regardless of any reasons.

So since I can't even return it, I might as well use it.

MSY?
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post #626 of 1491
Quote:
Originally Posted by mboner1 View Post

MSY?

PCCG.
post #627 of 1491
Before I fill in RMA form, I need a confirmation if this PWM flickering issue is the one that is causing the problem.

Reading http://www.tftcentral.co.uk/articles/pulse_width_modulation.htm gave me some idea about the problem and the fact that PWM itself isn't the issue here.
However, I'm not quite sure of this side effect of PWM applies to me atm.

Basically, when I look at the screen I don't see any lines, artifacts or flickering visuals. So in other words, I don't see anything visually.
But when I look at the screen of long duration, my eyes starts to hurt and its hard to focus on reading/typing.

Does this mean that this PWM back-lighting is causing "invisible" eye-straining effect? Or am I just dreaming?
post #628 of 1491
You can have an adverse reaction to PWM dimming of backlights without necessarily 'seeing flickering'. From your symptoms it does sound as if you are sensitive to this. It is causing neurological effects even if you can't see flickering.
post #629 of 1491
Quote:
Originally Posted by kanade96 View Post

Before I fill in RMA form, I need a confirmation if this PWM flickering issue is the one that is causing the problem.

Reading http://www.tftcentral.co.uk/articles/pulse_width_modulation.htm gave me some idea about the problem and the fact that PWM itself isn't the issue here.
However, I'm not quite sure of this side effect of PWM applies to me atm.

Basically, when I look at the screen I don't see any lines, artifacts or flickering visuals. So in other words, I don't see anything visually.
But when I look at the screen of long duration, my eyes starts to hurt and its hard to focus on reading/typing.

Does this mean that this PWM back-lighting is causing "invisible" eye-straining effect? Or am I just dreaming?
Don't be so quick to RMA, give it a few weeks, and then decide. It is a big adjustment for your eyes. Even after getting my screen height right, it still took a little while to acclimatize. Mow, all is good. Give it some time..
post #630 of 1491
I stumbled upon this thread while doing research on Korean monitors. I basically was looking for a 27" LED monitor with a high resolution. For similar inputs (Crossover), I was looking at $450 dollars for a Korean monitor from a trusted seller. $550 if you wanted a "Pixel Perfect" one. I started looking into the QNIX monitors but then realized the time I spent researching these (a better part of two weeks) I could have spent earning money biggrin.gif

I saw this monitor in a local staples and wasn't as amazed as others are, but there wasn't much for viewing material on it. I definitely didn't want a glossy non-antiglare screen. I was able to get the monitor from Memory Express for 629.99 + tax shipped. I priced matched from the NCIX sale of 649.99. That puts it at only 180 dollars more than a Korean and I am more confident with this purchase than the eBAY route.

I'm set to receive the monitor on Monday and will post my impressions as soon as I get a chance to test it out. Looking forward to it. Been programming with at 1440x900 monitor and it isn't a pleasant experience biggrin.gif
Edited by pedantic - 5/30/13 at 5:48pm
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Overclock.net › Forums › Components › Monitors and Displays › [Official] Asus PB278Q & PB278QR Thread: Read the 1st Post