OLED Screen Uniformity Discussion-Banding and Vignetting - Page 228 - AVS Forum | Home Theater Discussions And Reviews
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post #6811 of 8418 Old 03-01-2019, 11:34 AM
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Originally Posted by Milan254 View Post
That is why I want to keep this set for now. My band is wide but very faint and I don’t have any other issues with the screen and the picture is stunning even comparing to my Sony X900F. I should mention that I went to Best Buy to buy the A8F before I bought this TV from Costco and it wasn’t pretty. I specified several times the unit MUST be factory sealed. This was the only 55” unit anywhere in town so I wanted to make sure it’s not a repack. The manager assured me it is and it was delivered to the store in December and it is absolutely new. Well I lug the sucker home, open the box and see ripped foam, no plastic on the screen, packaging all messed up and the screen had prints all over the screen so I just put it back in the box and took it back to Best Buy. The manufactured date on the unit was July 2018!!. I was really mad but to them it was just another return with no apologies.
Plastic on the screen? Unless Sony totally changed things between the A1E and A8F, there is no plastic on the screen. There is a bag covering the screen inside the styrofoam blocks. I believe LG had plastic on the screen in 2016, but 2017 they only have it on the back on some places, and not sure about 2018. I don't recall Sony having any stick on plastic covering anywhere.

So it is possible the styrofoam was cracked in shipping (which isn't great), but it was in fact never opened.

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post #6812 of 8418 Old 03-01-2019, 03:43 PM
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Originally Posted by lsorensen View Post
Plastic on the screen? Unless Sony totally changed things between the A1E and A8F, there is no plastic on the screen. There is a bag covering the screen inside the styrofoam blocks. I believe LG had plastic on the screen in 2016, but 2017 they only have it on the back on some places, and not sure about 2018. I don't recall Sony having any stick on plastic covering anywhere.

So it is possible the styrofoam was cracked in shipping (which isn't great), but it was in fact never opened.
Well the LG C8 I bought has plastic on the front of the screen and also on the back. My Sony X900F also had a plastic on the front of the screen. So my friend you are absolutely incorrect!!!
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post #6813 of 8418 Old 03-01-2019, 07:20 PM
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Originally Posted by Milan254 View Post
Well the LG C8 I bought has plastic on the front of the screen and also on the back. My Sony X900F also had a plastic on the front of the screen. So my friend you are absolutely incorrect!!!

I specifically said 2016 had film on front, 2017 did not, and 2018 I didn't know. So C6 film, C7 no film, C8 no idea. You say the C8 has it on front, so well then it does. The C7 did not. The C6 did. The A1E did not, and I highly doubt the A8F did either. I have never seen anyone say it had anything to remove. In a few unboxing videos I do see a couple of small stickers on the screen on the right side. Not sure if they all have that or only early ones that might go on display at a store. Certainly not a film on the entire screen though.


I missed the part about the packaging being a mess and the prints on the screen. Yeah that sounds wrong.

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post #6814 of 8418 Old 03-03-2019, 12:05 PM
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Here is my 55 B8 after 100hours. Should I return?
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post #6815 of 8418 Old 03-03-2019, 12:10 PM
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Here is my 55 B8 after 100hours. Should I return?
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post #6816 of 8418 Old 03-03-2019, 12:12 PM
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Another photo with 35 OLED light 85 contrat 50 brightness and BT1886GAMA
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post #6817 of 8418 Old 03-03-2019, 01:52 PM
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Another photo with 35 OLED light 85 contrat 50 brightness and BT1886GAMA
If it were me I would try again with half the screen light or dark.
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post #6818 of 8418 Old 03-03-2019, 04:21 PM
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Another photo with 35 OLED light 85 contrat 50 brightness and BT1886GAMA

Sorry but I’d return that ASAP.
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post #6819 of 8418 Old 03-04-2019, 02:51 AM
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Hey there,

this is my Pana FZ800 55" with ~600 hours, no big cycle yet. Lum 35, Gamma 2.4. Taken by a Sony Alpha600 cam on a tribot

pic1: 5% with shorter exposure time
pic2: 5% with longer exp. time (room was dark but exposure time lights it up)
pic3: 5% nearly how its to my eyes
pic4: 10%

In content, i cant see the darker right side, i barely notice some decent banding on the leftside, but only when there ist a panning! 95% of the time its invisible, also in dark horrormovies. Overall im happy with it, but i hope we see banding free OLEDs in the future, cause of the price
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post #6820 of 8418 Old 03-04-2019, 04:26 AM - Thread Starter
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So over 3k hours now on my A1E. I think I’ve finally come to terms with the inherent issues that OLED tortures some of us with. My banding is probably as faint as it as ever been and the yellow tint (I think it has improved over time, but not gone) are not bothering me during real content...whatever that is. I also watch a lot of news (channel to be kept nameless 😎) and not a hint of burn-in at this point.

So I guess I’m coasting at the moment waiting for the tech to catch up to my expectations. Not a bad place at the moment.
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post #6821 of 8418 Old 03-04-2019, 04:38 AM
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My LG B8 after 1 month! 10% grey perfect all other test perfect, no banding at all. Vignetting noticeable only under 3% grey (bottom right corner brighter). Verdict?
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post #6822 of 8418 Old 03-04-2019, 10:44 AM
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Originally Posted by VidPro View Post
So over 3k hours now on my A1E. I think I’ve finally come to terms with the inherent issues that OLED tortures some of us with. My banding is probably as faint as it as ever been and the yellow tint (I think it has improved over time, but not gone) are not bothering me during real content...whatever that is. I also watch a lot of news (channel to be kept nameless ) and not a hint of burn-in at this point.



So I guess I’m coasting at the moment waiting for the tech to catch up to my expectations. Not a bad place at the moment.
I'm with you about half the time. No visible banding on the new panel, but the yellow tint is real! I can't wait until my brain ignores it. I see it on blue skies, white walls, less in high quality content.

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post #6823 of 8418 Old 03-04-2019, 11:22 AM
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The tinting on my 65C8 has bothered me a lot lately, even more so than banding. Compared to the center, not only does it get darker towards the left but also slightly greenish.

It doesn't look absolutely terrible but I just can't unsee it and constantly compare the left and right side whenever there is a mostly white or light colored scene.
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post #6824 of 8418 Old 03-04-2019, 11:37 AM - Thread Starter
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The tinting on my 65C8 has bothered me a lot lately, even more so than banding. Compared to the center, not only does it get darker towards the left but also slightly greenish.

It doesn't look absolutely terrible but I just can't unsee it and constantly compare the left and right side whenever there is a mostly white or light colored scene.
Not an easy thing to forget. I’m getting better at not caring. I think mostly because I’ve decided this current OLED is temporary until these issues are sorted out...if evah.

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post #6825 of 8418 Old 03-04-2019, 11:59 AM
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Originally Posted by jk82 View Post
The tinting on my 65C8 has bothered me a lot lately, even more so than banding. Compared to the center, not only does it get darker towards the left but also slightly greenish.

It doesn't look absolutely terrible but I just can't unsee it and constantly compare the left and right side whenever there is a mostly white or light colored scene.
At least in the 'old days' LG was exceedingly good about recognizing amd correcting near-white nonuniformity (refund or replacement) - have you teied cobtacting LG Support about the tinting on your C8?
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post #6826 of 8418 Old 03-04-2019, 12:08 PM
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Originally Posted by Irrequieto View Post
My LG B8 after 1 month! 10% grey perfect all other test perfect, no banding at all. Vignetting noticeable only under 3% grey (bottom right corner brighter). Verdict?
OLED light looks way too high. Read page 1 for proper settings and retake the picture.
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At least in the 'old days' LG was exceedingly good about recognizing amd correcting near-white nonuniformity (refund or replacement) - have you teied cobtacting LG Support about the tinting on your C8?

This is already a replacement panel. The first one had less tinting but more banding. Also before that I had a C6 which also had banding and tinting so I don't really think another panel will not have any issues unless I get extremely lucky.

I will probably buy a new TV this year, whether oled or lcd remains to be seen but one thing I'll do for sure is to send it back if it has any annoying issues. So far I've always tried to convince myself that I'll get used to slight uniformity issues but the truth is I never will....
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post #6828 of 8418 Old 03-04-2019, 12:30 PM
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OLED light looks way too high. Read page 1 for proper settings and retake the picture.
Settings:

ISF Dark
OLED 35
Contrast 85
Brightness 50

Total dark room
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post #6829 of 8418 Old 03-04-2019, 12:35 PM
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Key question for the op, isf dark but on bt1886 or 2.2 for the baseline pictures?
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post #6830 of 8418 Old 03-04-2019, 12:43 PM
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This is already a replacement panel. The first one had less tinting but more banding. Also before that I had a C6 which also had banding and tinting so I don't really think another panel will not have any issues unless I get extremely lucky.

I will probably buy a new TV this year, whether oled or lcd remains to be seen but one thing I'll do for sure is to send it back if it has any annoying issues. So far I've always tried to convince myself that I'll get used to slight uniformity issues but the truth is I never will....
For the prices we're paying, I expect LG to make me whole until I 'get lucky'.

It was exceedingly difficult to get LG to recognize defective panels for poor near-black uniformity while very easy to get them to recognize defective panels for poor near-white uniformity (primarily because the call phones cameras they use to communicate with Engineering Central capture near-white tinting far more effectively than they capture near-black streaking).

There is an argument that if you know your likely to just end up with an endless series of panels demonstrating the same defects, that it's not worth the trouble, but eccept for that factor, if you notice the tinting on content, I'd have LG give you another panel (or a refund if they offer that).

LG offered me a refund on my last of 4 defective 65EF9500s once they understood I intended to purchase a 65C6P once they were released...
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post #6831 of 8418 Old 03-04-2019, 01:07 PM
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For the prices we're paying, I expect LG to make me whole until I 'get lucky'.



It was exceedingly difficult to get LG to recognize defective panels for poor near-black uniformity while very easy to get them to recognize defective panels for poor near-white uniformity (primarily because the call phones cameras they use to communicate with Engineering Central capture near-white tinting far more effectively than they capture near-black streaking).



There is an argument that if you know your likely to just end up with an endless series of panels demonstrating the same defects, that it's not worth the trouble, but eccept for that factor, if you notice the tinting on content, I'd have LG give you another panel (or a refund if they offer that).



LG offered me a refund on my last of 4 defective 65EF9500s once they understood I intended to purchase a 65C6P once they were released...
I had my C8 replaced one week ago due to a giant black blob that was visible in dark content. My new panel is gorgeous in near black, but has a horrible yellow tint. I don't really want to play the lottery, but I don't think I can live with it. I have already put in another ticket, so we will see. Here is full field white and a black and white still from Battlefield V.



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post #6832 of 8418 Old 03-04-2019, 02:15 PM
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Originally Posted by Irrequieto View Post
Settings:

ISF Dark
OLED 35
Contrast 85
Brightness 50

Total dark room
Must be overexposed or something else is up. Look at pic 1 on post #6825 for how dark it should look. But I'd say your banding is not bad at all.

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post #6833 of 8418 Old 03-04-2019, 02:15 PM - Thread Starter
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Key question for the op, isf dark but on bt1886 or 2.2 for the baseline pictures?
That was a suggestion by a member...probably posted in this thread so if I didn’t post it I’m assuming it wasn’t in the request. I’ll look back and see if I can find the post.

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post #6834 of 8418 Old 03-04-2019, 05:17 PM
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That was a suggestion by a member...probably posted in this thread so if I didn’t post it I’m assuming it wasn’t in the request. I’ll look back and see if I can find the post.
When I posted my uniformity pictures, I was told to use BT.1886. The gamma setting really should be included in the first post. It's the source of a lot of confusion.

Regarding the brightness of the gray, a lot of that can be due to the camera's metering/exposure settings.
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post #6835 of 8418 Old 03-04-2019, 05:29 PM - Thread Starter
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When I posted my uniformity pictures, I was told to use BT.1886. The gamma setting really should be included in the first post. It's the source of a lot of confusion.

Regarding the brightness of the gray, a lot of that can be due to the camera's metering/exposure settings.
Thank you. I’ll add it now.
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post #6836 of 8418 Old 03-04-2019, 07:10 PM
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Hello all!

New owner of an LG C8 55" here, my first OLED... I told myself I would'nt go looking for trouble, and overall the picture is just about perfect in 98% of content. Sadly though, I have noticed, with the really dark grey scenes, a dark column on the left side of the display.. So, I check the 5% grey slide, and yup, pretty lacking in uniformity, unfortunately. Turns out there are two columns/bands, the darker one on far left is the one that rears it's ugly head in content. The camera pics do exaggerate it, not as bad in person, but it is noticeable.

Right now I'm sitting at around 80 hrs, I've run one manual comp cycle after I noticed it roughly 20hrs ago, didn't seem to help the darkest band. Purchased from Best Buy 7 days ago, and have about 7 more to decide if I should play the panel lottery, so hows it look guys? Can that dark patch get any better, or should I exchange?
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post #6837 of 8418 Old 03-05-2019, 11:09 AM
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It might, but my bigger concern is that horizontal band which starts 1/4 of the way up on the left side. Horizontal bands never disappear.

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post #6838 of 8418 Old 03-05-2019, 05:04 PM
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It might, but my bigger concern is that horizontal band which starts 1/4 of the way up on the left side. Horizontal bands never disappear.
So overall what do you think, should I pack it up? Guessing maybe so considering you used the word "concern" and I am, after dropping so much cash on it. Don't want to end up stuck with one of the worst examples Haha!! I'll be honest tho, I can't even see that horizontal band in person, didn't even know it was there till I took the pic. The dark vertical bands on the left were the main offenders.

On the plus side, I don't notice many hard-edged, sudden gradient change bands that show in lighter grey-ish panning content, like Arrival helicopter scene (aside from one hard line band in the middle that developed after the manual comp cycle, heard they come and go with OLED). Also, the white uniformity seems pretty good. And bright scenes are great, no annoying dirty screen effect at all..... Which, speaking of.. Funny, how LCD's are best at bright stuff, yet the DSE is most obvious there. Meanwhile, Oled is best with dark scenes, yet that's where the near black vertical banding gets ugly.
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post #6839 of 8418 Old 03-06-2019, 12:10 PM
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Only you can really decide, one of the problems with the "lottery" is that any replacement might be worse
I haven't seen Arrival but I gather it's a good torture test. If you have Interstellar, there's a scene in the first few minutes (main character waking up) which looked disgusting on my TV and was my motivator.
If you can see it in content and not just on the test slides, that's tipping over more to the "return" side but I'm only one person!

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post #6840 of 8418 Old 03-06-2019, 02:20 PM
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Hi,
This is my LG C8 (55"). After some bad luck and panel/mainboard replacements, LG actually exchanged the whole TV.

The dark image is how 5% looks IRL, the brightened one is what my phone camera does on "auto". Looks pretty decent to me, although there is a brighter patch on the bottom right, which can be seen better on 1% and 2% slides...(which I am happy to also post if somebody likes to see it)



Cheers
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burn-in , compensation , correction , oled , uniformity

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