Author Topic: Advice/Help Thread  (Read 3527 times)

NCX

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Re: Advice/Help Thread
« Reply #165 on: February 02, 2020, 12:58:37 pm »
I just hope it doesn't have pixel inversion/scan line/ Interlace pattern artifact

The XG2401 suffers from dark content banding and pixel version, as well as has worse image quality than the newer XG240R and VX2458.

AHVA/IPS/PLS glow should not be a problem with proper display height, display brightness and bright-enough bias lighting.  Another solution is to put non-stick, perceived black depth increasing tape on the bezel. I use this silver Scotch tape on a few fake border or frame-less monitors I own such as the HP 24 Envy (HP 24 Envy with and without tape and HP 25er without and without tape) and 25er.  I've removed and re-taped a few monitors after a few months and not had issues with residue, however I must warn that adding tape to a monitor may void the warranty.
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Megathone

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Re: Advice/Help Thread
« Reply #166 on: February 19, 2020, 06:34:09 am »
So i receved my XG2041.

So about pixel inversion/scan line/ interlaced pattern artifacts, i dont notice them

But i encounter a problem that i didnt have when testing other TN monitor
I have, at the bottom right corner and half low right edge of the screen, a kind of glow or reflection. It is only visible on dark content and of course, i followed your post on correct viewing position

The glow disappear if i move my head to the right, and black doesnt look anymore different than the rest of the screen

Pcmonitor.info mentionned TN Glow if user is viewing at sharpers angles or off center viewing angle, which wasn't my case

So could it be a defect in the product or bad black uniformity ?
« Last Edit: February 19, 2020, 02:50:26 pm by Megathone »

NCX

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Re: Advice/Help Thread
« Reply #167 on: February 22, 2020, 07:59:33 pm »
So could it be a defect in the product or bad black uniformity ?

I need to see it to judge properly, but it seems like it should be exchanged or returned.

pbi2w

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Re: Advice/Help Thread
« Reply #168 on: March 05, 2020, 01:25:59 pm »
Hi NCX,

I'm looking for a 4K monitor with a really non reflective panel.

So far I've tried these 4k monitors:

- AOC U2790PQU

- BENQ PD 2700U

- NEC EA271U

All of them are more reflective compared to older monitors like DELL P2213 or DELL P2417H. I was hoping that newer models from DELL, EIZO or HP are less reflective but videos on youtube are showing that this is not the case.

Can someone recommend a 4K monitor with really good anti reflective properties?



NCX

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Re: Advice/Help Thread
« Reply #169 on: March 05, 2020, 06:29:07 pm »
All of them are more reflective compared to older monitors like DELL P2213 or DELL P2417H. I was hoping that newer models from DELL, EIZO or HP are less reflective but videos on youtube are showing that this is not the case.

Most matte monitors use the same light coating now aside from a few mediocre TN panels with grainy matte coatings and very expensive professionally oriented monitors from Eizo.  Control your room lighting (get a less bright ceiling or lamp bulb and/or don't have your monitors facing a lamp or window) to reduce the amount which shines on your displays.  Bias lighting (lights placed behind the display) is the best way to eliminate glare and reflections and increase the perceived black depth.

Display Brightness & Room Lighting: The Importance Of Light article and extended video version
« Last Edit: March 05, 2020, 06:32:38 pm by NCX »

pbi2w

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Re: Advice/Help Thread
« Reply #170 on: March 06, 2020, 12:25:26 am »
Thanks a lot for the tips. Unfortunately the room has windows every :) so I can choose between back-light or front-light.

Which is the expensive model from EIZO with the better matte coating?

pbi2w

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Re: Advice/Help Thread
« Reply #171 on: March 07, 2020, 05:51:10 am »
Today I've tested the 4K monitor in a room with light from the side. On black background I can still see my reflection (blurry) and part from the room. It seems that the 4K monitors aren't really matte.  :(

NCX

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Re: Advice/Help Thread
« Reply #172 on: March 08, 2020, 12:56:37 am »
Which is the expensive model from EIZO with the better matte coating?

Eizo CS (2560x1440 and up) and CG series.  Curtains are a cheaper and wiser solution since a stronger coating will only make a slight difference; high brightness also helps.

PRAD has macro photos of the matte coatings in their reviews:

AOC U2790PQU (light matte)
EIZO CG279X (medium matte)
EIZO CG319X (grainy matte)
ViewSonic VP2768-4K (light matte)

The monitors you tried all have light matte coatings.

Light matte Acer XB321HK
Medium matte Acer XF240H
Almost-Glossy/low haze HP 25er
Semi-Glossy HP 24 Envy

It's possibly to buy cheap used grainy matte coated 1440p monitors from eBay like the HP ZR2740W

peat moss

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Re: Advice/Help Thread
« Reply #173 on: March 08, 2020, 06:01:13 pm »
Questions about PWM dimming

1). Is PWM flickering caused by the panel, or the backlight?
2). Is the panel part of the backlight? 
3). Can you replace the panel to get rid of PWM flickering?
4). If not, what part of a monitor can you replace to get rid of flickering?

Thanks.

NCX

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Re: Advice/Help Thread
« Reply #174 on: March 16, 2020, 08:40:27 pm »
1). Is PWM flickering caused by the panel, or the backlight?

The back-light is controlled by the electronics (think Free & G-Sync monitors with back-light strobing), so theoretically one could modify the software (advanced service menu or EDID...may require hacking without the manufacturer equipment) or put a compatible PWM free board from a PWM Free into a display which uses the same parts like an old Qnix or X-Star monitor.  There are no good displays with PWM so it's not really something to consider unless trying to replace damaged or malfunctioning parts.