27GL850 bad?

[silajim]

Hi,   

I got yesterday this monitor and I've been running some tests and it seems like I got a dud regarding contrast especially on black luminance  I run the tests with an i1display Studio, and display calibrated at 6000K, the values are after calibration. 

 

Did a really get a bad monitor? or not? The backlight bleed is quite noticable in a dimm room (not dark , but but not superbright) especially compared to my U2414H that it "replaces".

Basic Information

Device:	27GL850 @ 1920, 0, 2560x1440
Instrument:	i1 DisplayPro, ColorMunki Display — Refresh (generic)
Correction:	LCD RG Phosphor LED IPS (LG 27GL850 by 4KM for newDP (i1 Pro)) <LG 27GL850 by 4…P (i1 Pro).ccss>
Display profile:	27GL850 #2 2020-03-18 21-18 D6000 2.2 F-S XYZLUT+MTX
Display profile luminance:	97.1 cd/m²
Display profile whitepoint:	xy 0.3208 0.3363 (XYZ 95.41 100 101.98), CCT 6045K
Measured luminance:	97.2 cd/m²
Measured whitepoint:	xy 0.3206 0.3359 (XYZ 95.45 100 102.26), CCT 6057K
Assumed target whitepoint:	6100K daylight, xy 0.3198 0.336 (XYZ 95.17 100 102.46)
Measured black luminance:	0.1393 cd/m²
Contrast:	697.7:1
Testchart:	verify_extended.ti1
Simulation profile:	None
Gamma mapping:	N/A
Whitepoint simulation:	N/A
Chromatic adaptation:	Bradford
Devicelink profile:	None
Evaluation criteria:	RGB
Date:	2020-03-18 21:46:31

Measurement Report 3.8.9.3 — 27GL850 @ 1920, 0, 2560x1440 — 2020-03-18 21-44.html

[schwellmo92]

That contrast is pretty much correct, rtings measured it at 735:1.

 

ref: https://www.rtings.com/monitor/reviews/lg/27gl850-b

[silajim]

And tft central 845:1 at the same osd brightness, with a blackpoint of 0.10 while mine is at 0.14.  I don't trust rtings because they dont give enough information like, at which osd brightness level? What's the luminance? The black point? someone cannot cross check the data

[schwellmo92]

23 minutes ago, silajim said:

And tft central 845:1 at the same osd brightness, with a blackpoint of 0.10 while mine is at 0.14.  I don't trust rtings because they dont give enough information like, at which osd brightness level? What's the luminance? The black point? someone cannot cross check the data

They provide it under their calibration section.

[silajim]

2 hours ago, schwellmo92 said:

They provide it under their calibration section.

Indeed.

 

Does anyone on the forum have the monitor? 

[Delicious Cake]

This monitor having poor constrast is pretty much the norm.

[silajim]

1 hour ago, Delicious Cake said:

This monitor having poor constrast is pretty much the norm.

Yeah, I will probably return it and get a Pixio PX7 prime

[schwellmo92]

42 minutes ago, silajim said:

Yeah, I will probably return it and get a Pixio PX7 prime

The P7 has better contrast but much worse black uniformity and backlight bleed. If you play in a dark room and care about good contrast you want a VA panel.

[silajim]

I think my issues come from blb, since my both U2414H have almost none.

I've attached an Image in a dark room.

 

I don't play or watch movies in a dark room, not overly bright also. But I can notice the lower left corner on dark scenes

 

[Gaires]

40 minutes ago, silajim said:

I think my issues come from blb, since my both U2414H have almost none.

I've attached an Image in a dark room.

 

I don't play or watch movies in a dark room, not overly bright also. But I can notice the lower left corner on dark scenes

 

Maybe I'm just oblivious to it, but I don't notice blb or ips glow in day to day usage on my gl850.

My brightness is set to 40.

[silajim]

Just now, Gaires said:

Maybe I'm just oblivious to it, but I don't notice blb or ips glow in day to day usage on my gl850.

My brightness is set to 40.

...

My brightness is set to 11

[silajim]

Turns out it's glow, all that is glow, except one small bleed in the uper left-ish corner 

[silajim]

So I got a second panel and this is how it looks, brightness is set at 90cd and the image is not overly overexposed, just a tad, 

[Action_Johnson]

If you back up, that brightness in the corner will go away. If you still see it from 6 feet away, than yes you got some BLB. 

 

In my observations, people complaining about BLB are the same people who stare at their monitors from 12-24 inches away. Of course you're going to see a little unevenness when you're that close, along with developing myopia. 

 

I've had a couple Eizo's in my lifetime, I think your monitor looks fine (especially for the price and speed of it). 

[silajim]

19 hours ago, Action_Johnson said:

If you back up, that brightness in the corner will go away. If you still see it from 6 feet away, than yes you got some BLB. 

 

In my observations, people complaining about BLB are the same people who stare at their monitors from 12-24 inches away. Of course you're going to see a little unevenness when you're that close, along with developing myopia. 

 

I've had a couple Eizo's in my lifetime, I think your monitor looks fine (especially for the price and speed of it). 

Thanks for the answer!!  Yes it goes away if I back up like 6 feet (~2 meters). I sit at about 28 inches (70cm) from the monitor. 

 

The previus one had glow even almost dead center of the screen, running from bottom left to top right.