LG 34GK950G, 3440x1440, G-Sync, 120Hz

Legend said:
Yeah, clearly yours is unacceptable. I wouldn't want to use that monitor at any price, nevermind a four figure one! Very unfortunate. I wonder if the reason you got one so early was due to someone sneaking them out of the LG factory early before they went through QC properly? Who knows?! :rolleyes:
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It has June 2018 manufacture date, so thats certainly early. But old 3800R panels had the same characteristics and massive glow and it was never fixed in newer units so I don't know if this is even fixable. I would hope that is just a bad unit, so I can get good one later, because there are not many alternatives, if any at all, but I doubt that there can be this much variance.
 
krzychowiec said:
It has June 2018 manufacture date, so thats certainly early. But old 3800R panels had the same characteristics and massive glow and it was never fixed in newer units so I don't know if this is even fixable. I would hope that is just a bad unit, so I can get good one later, because there are not many alternatives, if any at all, but I doubt that there can this much variance.
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It may be wishful thinking, but I can only hope you have an early production model that missed QC for whatever reason. That is probably the worst incidence of IPS glow I've ever seen. The fact that TFT's model was OK bodes well at least. Would be interesting to know what the production date of his sample was, and also how the 'G' version he has turns out.
 
Ehhh... If it only had the same amount of glow as my 34UC98, I would have kept it and be satisfied with what I got. But of course you can't just buy a display or a TV, you have to bother with exchanges and returns for freaking 2 months before you manage to get something acceptable. And now I don't even know what to do next, because there are no real alternatives for 950G and getting the issue fixed with unit exchange is extremely unlikely.

Just why the hell there is such a huge difference between glow from right and left. From left it looks very good and from right it a disaster, so left side of the display is always covered in massive bleed, even when looking from the front.

I guess I will just check if the long DP cable I will receive tomorrow works well with G-sync and 3440x1440 because it was expensive for just some cable, and if it does then I will keep it and return 950G. Nothing to wait for really, this glow is not going to change.

Too bad Dell failed with AW3418DW, if it only had proper calibration and proper brightness I would just get it for much less 950G, but with 2.6 gamma and 250 nits of max brightness it would be a massive downgrade from UC98 in terms of picture quality.
 
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Oh Lord, this is gonna be interesting if this is the quality we can expect for the non-cherry picked review panels. Small sample size, but it doesn't look good nonetheless.
 
Lev said:
Oh Lord, this is gonna be interesting if this is the quality we can expect for the non-cherry picked review panels. Small sample size, but it doesn't look good nonetheless.
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"small sample size"? 1 unit is pretty bloody small! ;)

katscan said:
@badass I wonder if he can check the IPS from both angles... is it possible he only checked it from the "good" angle ?
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will double check on the G model but can't say i observed anything like that on the F model when tested

@ krzychowiec what brightness setting are you set at for those IPS glow photos?
 
Baddass said:
@ krzychowiec what brightness setting are you set at for those IPS glow photos?
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100% on UC98 and 70% on 950G, according to reviews this should be around 300 nits for both (assuming G has the same range as F). My camera picks things better then. But it doesn't really matter, lower brightness even makes glow more visible because the picture is dimmer so glow "gets through" easier. I am now using 950G at 0% brightness (like with any display when web browsing) and I can see massive yellow glow on darker backgrounds like YouTube dark theme.
 
that's quite odd, i can't say i've ever observed that before although not actively something i've searched for. The black content viewing angles of the panel do seem to be different depending on whether you look at the screen from the left or the right hand side. From the left, they appear as per the review, with lower level of glow than many other IPS panels, with the glow being a little more purple and less obviously white. From the right hand side though the glow is more white and pronounced. I've just confirmed this on both the G and F models, and so it must be a characteristic of the panel itself. I will update the review accordingly and include a couple of comparison photos in there
 
Baddass said:
that's quite odd, i can't say i've ever observed that before although not actively something i've searched for. The black content viewing angles of the panel do seem to be different depending on whether you look at the screen from the left or the right hand side. From the left, they appear as per the review, with lower level of glow than many other IPS panels, with the glow being a little more purple and less obviously white. From the right hand side though the glow is more white and pronounced. I've just confirmed this on both the G and F models, and so it must be a characteristic of the panel itself. I will update the review accordingly and include a couple of comparison photos in there
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Huh. Odd. Is the right hand side BLB/glow worse than average in your sample?
 
Baddass said:
that's quite odd, i can't say i've ever observed that before although not actively something i've searched for. The black content viewing angles of the panel do seem to be different depending on whether you look at the screen from the left or the right hand side. From the left, they appear as per the review, with lower level of glow than many other IPS panels, with the glow being a little more purple and less obviously white. From the right hand side though the glow is more white and pronounced. I've just confirmed this on both the G and F models, and so it must be a characteristic of the panel itself. I will update the review accordingly and include a couple of comparison photos in there
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is there a chance your were cherry picked by LG for a review?
 
just to confirm, i am seeing the same thing reported by krzychowiec who has just received the G model. I've re-run tests on both the F model and G model just now and am seeing the same characteristics reported by krzychowiec. The level of backlight bleed and clouding is likely to vary by sample, but the underlying characteristics of the panel behavior shouldn't change much. You can't "cherry pick" out a viewing angle characteristic of the IPS matrix and pixel structure :)

The glow on dark content is more noticeable when viewing the screen from the right than it is viewing it from the left. I've not seen this difference before in my testing of other screens in the past, although like i say it's not something i've deliberately looked out for. I will do so from now on! From the left hand side, the IPS glow is fairly low, and has a more purple hue to it, being less white/pale than a lot of older generation IPS ultrawide screens. that is what we reported on in the review originally.

However, when you view it from the right hand side the IPS glow is more pronounced, having a whiter/more pale glow to it. I've just updated the review of the F model with further info and photos to demonstrate: http://www.tftcentral.co.uk/reviews/lg_34gk950f.htm#viewing
 
Baddass said:
that's quite odd, i can't say i've ever observed that before although not actively something i've searched for. The black content viewing angles of the panel do seem to be different depending on whether you look at the screen from the left or the right hand side. From the left, they appear as per the review, with lower level of glow than many other IPS panels, with the glow being a little more purple and less obviously white. From the right hand side though the glow is more white and pronounced. I've just confirmed this on both the G and F models, and so it must be a characteristic of the panel itself. I will update the review accordingly and include a couple of comparison photos in there
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So would you say this is something with the Nano IPS technology, or a fault in the first batch of the panels?
 
Baddass said:
just to confirm, i am seeing the same thing reported by krzychowiec who has just received the G model. I've re-run tests on both the F model and G model just now and am seeing the same characteristics reported by krzychowiec. The level of backlight bleed and clouding is likely to vary by sample, but the underlying characteristics of the panel behavior shouldn't change much. You can't "cherry pick" out a viewing angle characteristic of the IPS matrix and pixel structure :)

The glow on dark content is more noticeable when viewing the screen from the right than it is viewing it from the left. I've not seen this difference before in my testing of other screens in the past, although like i say it's not something i've deliberately looked out for. I will do so from now on! From the left hand side, the IPS glow is fairly low, and has a more purple hue to it, being less white/pale than a lot of older generation IPS ultrawide screens. that is what we reported on in the review originally.

However, when you view it from the right hand side the IPS glow is more pronounced, having a whiter/more pale glow to it. I've just updated the review of the F model with further info and photos to demonstrate: http://www.tftcentral.co.uk/reviews/lg_34gk950f.htm#viewing
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So that would be it for 34GK950... :p Too bad, it is a really nice panel except for the bleed, everything else is great. But glow is ruining everything, it is really that bad.

Ehh... just ordered Alienware AW3418DW, so I will compare 3 screens now, UC98 vs 950G vs AW3418DW.

Exactly the same as 3 years ago, 3 displays paid. When I was buying a TV late 2017 I had 3 TVs paid as well and comparing them. Maybe I should start a youtube channel or something :D :p

I am very worried about picture quality on Alienware especially that I am using high brightness settings so 250 nits is nothing and I am used to factory calibrated screens. Will see, hopefully it will be good and this should be the one I should have bought right from the beginning.

The biggest problem is that my 34UC98 has a lot of stuck pixels and these two horizontal lines I posted somewhere before, so I have to pick something, I can't just stay with UC98.
 
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Lev said:
So would you say this is something with the Nano IPS technology, or a fault in the first batch of the panels?
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not expecting this to be any fault, but a characteristic of the panel technology, pixel structure etc. important to note that it the overall glow on dark content is likely to be comparable to most mainstream IPS screens. It's hard to eliminate that without the use of additional polarizer films
 
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