OLED Screen Uniformity Discussion-Banding and Vignetting - Page 199 - AVS Forum | Home Theater Discussions And Reviews
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post #5941 of 7806 Old 09-24-2018, 11:18 AM - Thread Starter
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Quote:
Originally Posted by godfatherip View Post
I'm thinking about getting a 65C8 but all of this banding stuff has me worried now, is it a major problem for normal viewing? Is it just a few bad panels or do most have serious banding issues?
Depends on your tolerance level. I think most viewing on your typical OLED with some banding (all OLEDs apparently have some uniformity issues) you’ll probably only see it when torture scenes come up.

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post #5942 of 7806 Old 09-24-2018, 01:23 PM
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Quote:
Originally Posted by VidPro View Post
Depends on your tolerance level. I think most viewing on your typical OLED with some banding (all OLEDs apparently have some uniformity issues) you’ll probably only see it when torture scenes come up.

^^^ What he said .... but I would be perhaps more concerned about yellow and/or pink tinting that can plague these panels, as it can show up in a variety of content, day or night.
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post #5943 of 7806 Old 09-25-2018, 01:58 AM
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Originally Posted by mrtickleuk View Post
Not enough information to be able to say IMHO. Looks good at first glance but we don't know what we are dealing with - 5% grey is very very dark, so what have you done to the settings to make it appear that bright? Did you follow the settings recommended for taking photos in the first post? (I know there are no settings listed for Philips, but there should be equivalents. Don't use VIVID modes etc for example!)

I tried diffrent settings, Here are the results.
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post #5944 of 7806 Old 09-25-2018, 07:52 AM - Thread Starter
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Originally Posted by godeath View Post
I tried diffrent settings, Here are the results.
Seeing it in content other than slides and torture scenes? If not then I'd say keep it because you do worse.

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post #5945 of 7806 Old 09-25-2018, 09:21 AM
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Originally Posted by scheppr View Post
iwill try again, dont know why pics wont load.. the problem isnt with the right side.. that looks fine. lots of details good blacks no pixelaiion or marcroblokking and good contrast..
the left side is washed out. and shows mayor macroblokking and there is no contrast and detail at all in dark scenes.. colours are distorted
i dont know why the pics wont show but ill try again. in real live it looks much worse (the 1% looks at lot less dark on the left than it shows in the pictures)
(for instance playing the openingscene of wheelmen (netflix 4k) and Fargo S03E08 (netflix HD) show major grey moving and flashing blocks on the left side the right side is fine, not detail at all can be seen on the left. its inpossible to watch. on the laptop screen and a 4 y old budget samsung LED smart tv the scene looks fine)
Damn. I have the same problem but on the opposite side of the TV. This is with an E8 55". How many hours did you have on the TV when you took those photos? I"m wondering if this issue (not quite banding) goes away with time? I have about 25 hours on the TV and the dark scenes are horrendous on the TV. Just like you're describing. wondering if I should just initiate a return.
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post #5946 of 7806 Old 09-26-2018, 11:39 AM
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So a tech is coming out on Saturday to replace the panel in my C8. Hopefully this will correct my picture issues. He called today and mentioned that he may also replace the main board, but he was going to make that determination once he got to my house. Does anybody have any input on that that they care to share? Did anybody have just the panel replaced and that fixed their issue? See attached.
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post #5947 of 7806 Old 09-26-2018, 01:07 PM - Thread Starter
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Quote:
Originally Posted by Patrick613 View Post
So a tech is coming out on Saturday to replace the panel in my C8. Hopefully this will correct my picture issues. He called today and mentioned that he may also replace the main board, but he was going to make that determination once he got to my house. Does anybody have any input on that that they care to share? Did anybody have just the panel replaced and that fixed their issue? See attached.
Unfortunately my C7 panel replacement was only slightly better. They refused any other replacements after that, but that’s my story and you may have better luck. Good luck!

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post #5948 of 7806 Old 09-26-2018, 06:49 PM
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I had my E7 panel replaced. Got slightly better on the banding but worse on yellow and pink tinting
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post #5949 of 7806 Old 09-27-2018, 02:44 AM
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Originally Posted by VidPro View Post
Seeing it in content other than slides and torture scenes? If not then I'd say keep it because you do worse.
Here are the torure scenes from Marco Polo. Right side looks darker imo. What do you think?
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post #5950 of 7806 Old 09-27-2018, 02:52 AM - Thread Starter
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Quote:
Originally Posted by godeath View Post
Here are the torure scenes from Marco Polo. Right side looks darker imo. What do you think?
It does from the photos. How many hours on the panel?

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post #5951 of 7806 Old 09-27-2018, 07:37 AM
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Originally Posted by VidPro View Post
Unfortunately my C7 panel replacement was only slightly better. They refused any other replacements after that, but that’s my story and you may have better luck. Good luck!
I sure hope I have better luck, too. Not just for my benefit but for theirs as well. I will not leave Lg alone until my tv is somewhat acceptable. They will be so tired of me they'll be like "just get this guy a tv that works so he'll stop calling". Haha
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post #5952 of 7806 Old 09-27-2018, 01:23 PM
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Panel have 42h. 2 manual clean.



Quote:
Originally Posted by VidPro View Post
Quote:
Originally Posted by godeath View Post
Here are the torure scenes from Marco Polo. Right side looks darker imo. What do you think?
It does from the photos. How many hours on the panel?
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post #5953 of 7806 Old 09-27-2018, 02:57 PM
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Quote:
Originally Posted by godeath View Post
Here are the torure scenes from Marco Polo. Right side looks darker imo. What do you think?

What a nightmare torture scene

Out of curiosity I fed that scene om my 150$ plasma tv.. Banding all over the place.. Wow.. Source: Nvidia shield
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post #5954 of 7806 Old 09-27-2018, 10:40 PM
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Originally Posted by godeath View Post
Panel have 42h. 2 manual clean.
Seem to be the new thing from LG display. Instead of thin vertical bands half the tv is one big band. Have seen it on the C8s aswell.
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post #5955 of 7806 Old 09-27-2018, 10:56 PM
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Maniac on Netflix had plenty of low contrast scenes throughout which really made the banding stand-out (can't remember any specifically bad scenes)...I'm starting to just ignore it and focus on something else

Josh
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post #5956 of 7806 Old 09-28-2018, 12:33 AM
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This is my new TV lg 55 b8 purchased 4 days ago. I used the recommended settings: isf dark oled 35 contrast 85 and brightness 50. these are the results:Click image for larger version

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post #5957 of 7806 Old 09-28-2018, 03:09 AM
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Originally Posted by Frankin View Post
This is my new TV lg 55 b8 purchased 4 days ago. I used the recommended settings: isf dark oled 35 contrast 85 and brightness 50. these are the results:Attachment 2461268
that looks pretty consistent and what most would call a good panel with only a few days of usage. people will say it will get better after a few compensation cycles. the main thing is your tolerance level of any banding should you notice it in content. my personal experience with my set (LG C7) is it never really got any better but it didn't get any worse either. the banding does annoy me when I notice it but all OLED's have this to a certain degree.
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post #5958 of 7806 Old 09-28-2018, 05:00 AM - Thread Starter
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Decided to take a quick pic this morning. The A1E is in a happy place at the moment. I have the bias light because it's the only way I can seem to get decent pic. The banding with my eyes is a bit more defined, but better than usual. Just one of the annoying aspects of the auto cycles.

I keep mentioning the left side yellow tint varies so much from day to day. From annoying to basically if I didn't know about it, I wouldn't notice it at all.
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post #5959 of 7806 Old 09-28-2018, 05:03 AM
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Quote:
Originally Posted by godeath View Post
Here are the torure scenes from Marco Polo. Right side looks darker imo. What do you think?
I think the right hand side of that panel is way to dark. You will probably notice worst shadow detail on the right side.
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post #5960 of 7806 Old 09-28-2018, 05:09 PM
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GAH!!

The right side of my replacement E8 seems to be much brighter than the right. See this scene from a 4K stream of Arrival (1st photo). The lower right side of the screen by the bed where the shadow is supposed to be is bright/gray instead of black.

I've also attached the 5% gray test from youtube. And the third photo is another egregious example from a dark scene from a Solo 4k stream from Vudu.

Panel has 45 hours and 2 manual pixel refreshes done already. Is this just a bad panel or will this get better with more time?

or am I screwed and need to roll the dice again?
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post #5961 of 7806 Old 09-29-2018, 02:35 AM
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That doesn't look good to me . Not to say it won't improve but it's not right at the moment. A criss-cross pattern with horizontal bands visible too is like my first one.

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post #5962 of 7806 Old 09-29-2018, 03:17 AM
 
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Originally Posted by Ninjacake View Post
GAH!!

The right side of my replacement E8 seems to be much brighter than the right. See this scene from a 4K stream of Arrival (1st photo). The lower right side of the screen by the bed where the shadow is supposed to be is bright/gray instead of black.

I've also attached the 5% gray test from youtube. And the third photo is another egregious example from a dark scene from a Solo 4k stream from Vudu.

Panel has 45 hours and 2 manual pixel refreshes done already. Is this just a bad panel or will this get better with more time?

or am I screwed and need to roll the dice again?
The QC on these expensive oleds is just very poor. That picture looks horrible , i could show it to my non-videophile friend, he would say that looks bad and these oleds are supposed to be reference tv's for videophiles. how much does a E8 cost, 3000-3500 usd? (higher outside america). I am looking to get a new sony a9f (equivalent to 5000 usd at my place), pics like that just concern me.

I was thinking, if you buy high end speakers or high end subwoofers, do they pose problems? you buy a 3000 usd pair of front speakers or a 2000 usd subwoofer, is there a major problem with them like oled tv's where people are packing them within 1 month of purchase and carrying them back to stores for a replacement/ refund or contacting the manufacturer? I would say no. In my experience, i have been buying high end speakers for stereo and subwoofers over 20 years, with speakers or subs from reputed brands in the range of 2000/ 3000 usd or higher, there is no problem with them 99% of the time if you buy them new, you just take them out of the box, set them at one place, calibrate and play. high end tv's simply dont have the same QC.

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post #5963 of 7806 Old 09-29-2018, 03:25 AM
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I've seen more and more of these panels where one side is significantly darker than the other recently, mostly on european forums. Either they had a bad batch or they were just holding back the really bad panels and are now that most reviews are already written releasing them.
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post #5964 of 7806 Old 09-29-2018, 03:37 AM
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Brand new Sony 65 KD-AF9, 15 minutes after first turning it on. Very, very pleased!

Can't see any banding in content.

Best picture I have ever seen!





Envoyé de mon SM-N960F en utilisant Tapatalk
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post #5965 of 7806 Old 09-29-2018, 03:41 AM
 
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Quote:
Originally Posted by LorHan View Post
Brand new Sony 65 KD-AF9, 15 minutes after first turning it on. Very, very pleased!

Can't see any banding in content.

Best picture I have ever seen!





Envoyé de mon SM-N960F en utilisant Tapatalk
where are you from and can you please check on the back of the tv the "made in..." label? what does it say?
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post #5966 of 7806 Old 09-29-2018, 04:00 AM
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I'm from Switzerland.

Picture taken several hours after first turn it on.

It's getting better and better!



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post #5967 of 7806 Old 09-29-2018, 04:16 AM - Thread Starter
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Looking good. If you can’t see it, just enjoy it.

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post #5968 of 7806 Old 09-29-2018, 11:25 AM
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Angry

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Originally Posted by Patrick613 View Post
I picked up a 55in C8 back on 08-03-18 and have never been able to get the picture to look even close to my dad's C7 from last year (main reason why i bought one) or the 55in edge lit sony that it replaced. I've been playing with the picture settings for weeks now to no avail and finally started looking at possible panel issues as the cause. I'm attaching pictures from my tv viewing from the other night when I was watching directv where it showed scenes with a lot of black in them (or what should be displayed as a black, such as a downtown shot of a city at night).

I've contacted Lg to initiate a warranty claim but am in the very beginning stages of the process. I'm hoping somebody here can help guide me on where to begin as far as tests go to really see how crappy the panel is (or do the pics that i've taken already taken confirm it?). The reason why I have an issue with this tv is that directv hd looks like complete crap (blurry, blooming everywhere, horrible black levels with unnecessary illumination) and 4k and dolby streaming content don't look much different or better than standard hd content.

Well the tech just left and said that he can't get a panel authorization on what he saw on my tv!! I was like, "are you blind???" Back to the drawing board I guess. I am not a happy camper right now.
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post #5969 of 7806 Old 09-29-2018, 12:15 PM
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Quote:
Originally Posted by Patrick613 View Post
Well the tech just left and said that he can't get a panel authorization on what he saw on my tv!! I was like, "are you blind???" Back to the drawing board I guess. I am not a happy camper right now.

Does the nasty stuff in near-black scenes only happen during playback and when you pause the picture it looks ok? Also does increasing brightness to a point where you induce black glow fix it? Does turning color to 0 fix it?


If yes then it's same issue I have. And I even got a panel replacement which didn't fix it.
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post #5970 of 7806 Old 09-29-2018, 02:34 PM
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Does the nasty stuff in near-black scenes only happen during playback and when you pause the picture it looks ok? Also does increasing brightness to a point where you induce black glow fix it? Does turning color to 0 fix it?


If yes then it's same issue I have. And I even got a panel replacement which didn't fix it.

I think every LG OLED panel this year displays the characteristics you're describing. Both a 55" C8 and E8 that I've used behaved the same way. The much bigger issue Patrick613 is having is that god-awful uniformity. Although I'm sure that would make those near black rendering issues easier to spot, and it's probably one of the reasons why you don't see more people corroborate your findings; their panel's uniformity masks the artifacts much better. But getting back to his panel, he'd probably have to clip black detail severely so that his image wasn't grey like that on dark scenes. Like a 42 brightness level of clipping.



Patrick, it's absolutely crazy that this disaster of a panel wouldn't warrant a replacement. I mean, look at it! What are they thinking? I wouldn't let them off the hook with that. I would pester them until the end of time if I had to.
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