OLED Screen Uniformity Discussion-Banding and Vignetting - Page 272 - AVS Forum | Home Theater Discussions And Reviews
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post #8131 of 9261 Old 01-11-2020, 01:23 PM
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Quote:
Originally Posted by kittenhoarder View Post
First time poster; I joined explicitly to share these images, as I have a couple more months under warranty ..... but I do worry that I am settling for what I have when it could be better.
If you can see it in normal content, and it seems you easily can, LG will replace the panel. Your case does not seem to be questionable at all.
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post #8132 of 9261 Old 01-11-2020, 03:07 PM
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Quote:
Originally Posted by VidPro View Post
The bottom darker edges are a concern, but with more hours and several more auto comp cycles those dark areas might dissipate.

Thank you. Took another picture this morning.

The panel has had approx 30 hours so far. I think it already looks slightly, slightly better. Still not 100% sure whether to keep it or return the tv. I have 4 days left so I have to decide on short notice.

Did try another YouTube test btw and their 5% slide somehow looked much better despite the same tv settings (as shown in OP):

Any further sentiments/recommendations would be much appreciated given the urgency.
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post #8133 of 9261 Old 01-11-2020, 11:32 PM - Thread Starter
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That’s looking much better. If the pic was taken the same way as the first I’d say keep it.

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post #8134 of 9261 Old 01-12-2020, 02:40 AM
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Originally Posted by VidPro View Post
That’s looking much better. If the pic was taken the same way as the first I’d say keep it.


Thanks! I currently tend to keep it.

It was indeed taken the same way. Still strange that the other YouTube test (picture 3) produces such different results despite that third picture being taken the same well as the first and second picture as well.
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post #8135 of 9261 Old 01-12-2020, 05:04 AM
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Originally Posted by EmilioLargo View Post
Thanks! I currently tend to keep it.

It was indeed taken the same way. Still strange that the other YouTube test (picture 3) produces such different results despite that third picture being taken the same well as the first and second picture as well.
You really need to have every variable exactly the same with each picture; same slide, camera/setting/angle, TV warm-up time, room lighting, etc.. The YT slide may have started out as less than 4k and scaling it up would produce the same results you see, as an example.
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post #8136 of 9261 Old 01-12-2020, 05:22 AM
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Quote:
Originally Posted by cathodeRay View Post
You really need to have every variable exactly the same with each picture; same slide, camera/setting/angle, TV warm-up time, room lighting, etc.. The YT slide may have started out as less than 4k and scaling it up would produce the same results you see, as an example.


Thanks, the first and second picture were exactly same slide, camera settings, tv settings, warm-up time and room lighting (none). Attached for reference in direct comparison:
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post #8137 of 9261 Old 01-14-2020, 02:05 PM
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Keeper or stinker?


OLED 55C9 PLA after approx. 20 hours. Settings as specified.


5% and and 10% slides of Youtube video. Pictures taken in pitch black room but close to what I perceive in reality.



Strong brighter band on the right hand side. Plenty of vertical lines and some weird dots. Dark vignetting on the bottom.



The lines can be clearly seen in the torture scenes (House on Haunted Hill S1E6, Marco Polo S1E3 etc).


On my 10+ year old LCD monitor I don't see any lines at all. Black level is ****e on that one though.
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post #8138 of 9261 Old 01-14-2020, 02:40 PM
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Quote:
Originally Posted by Bierfuizl View Post
Keeper or stinker?


OLED 55C9 PLA after approx. 20 hours. Settings as specified.


5% and and 10% slides of Youtube video. Pictures taken in pitch black room but close to what I perceive in reality.



Strong brighter band on the right hand side. Plenty of vertical lines and some weird dots. Dark vignetting on the bottom.



The lines can be clearly seen in the torture scenes (House on Haunted Hill S1E6, Marco Polo S1E3 etc).


On my 10+ year old LCD monitor I don't see any lines at all. Black level is ****e on that one though.
Reject. Get another.
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post #8139 of 9261 Old 01-14-2020, 10:08 PM
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LG C9, 65" after about 80 hours of usage

Gray uniformity at 5%

Photo 1: https://i.imgur.com/nlIICdo.jpg
Photo 2 (different camera settings): https://i.imgur.com/uWEK9qk.jpg
Photo 3 (different camera settings): https://i.imgur.com/1oyBqOm.jpg

TV settings as described, very dark room. I see slightly darker spots on the right side. I don't see this generally on content. I tested using the two fragments provider here from the OA (on Netflix in DV): I can see some bands during camera pans. In Marco Polo fragment I vaguely notice some banding again during quick camera panning (but this time I need to try really hard to notice anything).
I don't really see color variation or dithering with my eyes, but camera picked it up. It looks better in person. To me looks like a keeper. WDYT?

BTW, if I change TV settings to the ones I usually use:
OLED light 60
Gamma 2.2
Then I see this at 5%: https://i.imgur.com/Uq5Il4m.jpg

This is almost perfectly uniform to my eyes.


Color uniformity in bright scenes
I see slight blue tint on TV edges: approximately 1.5 inch on each side, but especially on left and top edge.
If I specifically look for this I see this in real content when there is a lot of white or light gray. I don't usually look at the edges, it's really on the periphery of the vision. But I guess I might see this often in gaming where HUDs are on the sides (not tried yet since my gaming set up is not ready yet).

I've attached a bunch of photos of 50%-100% white and real content here:
https://imgur.com/a/zn70xm7

I'm bothered by this much more than banding a low brightness (which I almost never see). How typical is this? If I try to exchange what is the chance I won't get something worse than this?

PS. Should I attach the files here instead of linking?
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post #8140 of 9261 Old 01-15-2020, 12:27 PM
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Quote:
Originally Posted by 7Merlin View Post
PS. Should I attach the files here instead of linking?
You can insert inline, if you wish. Sometimes makes it easier to compare if they are inline. Eg if you press the "insert image" icon, and when it asks for a URL use https://i.imgur.com/nlIICdo.jpg or whatever is the link to the single image (not imgur.com's page with it on). You can also do this if you've uploaded attachments and the image is an attachment hosted here. Just right-click on the image to get its URL, and remove the "thumbnail" part from the URL otherwise it'll be tiny

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post #8141 of 9261 Old 01-15-2020, 12:50 PM
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Here is another picture I just took. Any last thoughts? Have to decide whether to return it tomorrow (still tend to keep it).

Thanks!
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post #8142 of 9261 Old 01-16-2020, 09:10 AM
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This is my A9F as of now. The only thing sometime visible in scenes like the punisher S1 E7 and Marco Polo is the darker part on the right of the screen since it’s such a harsh line/ transition. I’m pretty sure this was not there at the beginning and it sometimes seems to be less pronounced.

It also has some red tinting on the left, but it’s only visible in certain uniform colors (yellow/ magenta), not even on a white screen or snow.

Not sure if I should bother talking to my retailer or if I’m still one of the lucky ones. Sony certainly won’t give a f***, that’s for sure.

What do you guys think? Any opinions would be highly appreciated.
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post #8143 of 9261 Old 01-16-2020, 01:30 PM
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post #8144 of 9261 Old 01-18-2020, 12:38 AM
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My new 77AG9, would you class this as a good panel?
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post #8145 of 9261 Old 01-18-2020, 05:59 AM
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Originally Posted by woppy101 View Post
My new 77AG9, would you class this as a good panel?
I went through a number of 77a9g and you scored big time. I got one that looked like yours and I was so happy with it. Well happy until I saw it has a line of pixels flashing. Hold on to that thing and enjoy.
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post #8146 of 9261 Old 01-18-2020, 06:35 AM
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Hello thank you for your answers, I take the liberty of asking you because I have often seen the tests and that no defect was found on the 555-GZ2000.
So I have neither stains nor banding. I still found something on the test patterns at 5% in dynamic mode and 100% brightness.
Some kind of lightning or cloud ...
I first thought about YouTube compression but I tested with videos uploaded on a forum and then on usb key. In other mode it's almost indivisible, maybe the mode with the image processing at the bottom... Have an idea ? Have you ever seen this phenomenon on an OLED?
Can you perceive any kind of lightning or clouds?
Besides it is advisable to make these tests with which settings?
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post #8147 of 9261 Old 01-18-2020, 09:58 AM
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Unhappy

Quote:
Originally Posted by curtisdodo View Post
Hello thank you for your answers, I take the liberty of asking you because I have often seen the tests and that no defect was found on the 555-GZ2000.
So I have neither stains nor banding. I still found something on the test patterns at 5% in dynamic mode and 100% brightness.
Some kind of lightning or cloud ...
I first thought about YouTube compression but I tested with videos uploaded on a forum and then on usb key. In other mode it's almost indivisible, maybe the mode with the image processing at the bottom... Have an idea ? Have you ever seen this phenomenon on an OLED?
Can you perceive any kind of lightning or clouds?
Besides it is advisable to make these tests with which settings?
Ur got a big pink Screen problem with that one. Ur 5 percent looks exstream pink tinted.

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post #8148 of 9261 Old 01-18-2020, 11:53 AM
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That's one way of going about it. I am of the mind (at least until getting an OLED with good uniformity isn't a total pain in the butt) that any new owner should run the sucka through all the tests. Why wait for it to show after the return period? I just think it's too much money to spend and be stuck with something I'm gonna hate.
What would all of the tests be? I’m getting one soon and want to test it after a “break in” period

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post #8149 of 9261 Old 01-18-2020, 12:13 PM
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Everything you need is on page 1.
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post #8150 of 9261 Old 01-18-2020, 12:15 PM
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I will add after the first 3 comps a oled dont change much on Screen uniformity.

So check then n decide then if its a keeper or a swap.

Lg W8 65" Wall paper oled tv. Sources Oppo 203. Panasonic UB9000. Apple 4K tv. Xbox one x.
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post #8151 of 9261 Old 01-18-2020, 12:29 PM
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The break-in slides link is broken, @VidPro . Not that it's necessary in this day and age. If one must, watching full-screen movies and TV through the first 20 hours should provide more than enough peace of mind.
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post #8152 of 9261 Old 01-18-2020, 12:45 PM
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Quote:
Originally Posted by curtisdodo View Post
Hello thank you for your answers, I take the liberty of asking you because I have often seen the tests and that no defect was found on the 555-GZ2000.
So I have neither stains nor banding. I still found something on the test patterns at 5% in dynamic mode and 100% brightness.
Some kind of lightning or cloud ...
I first thought about YouTube compression but I tested with videos uploaded on a forum and then on usb key. In other mode it's almost indivisible, maybe the mode with the image processing at the bottom... Have an idea ? Have you ever seen this phenomenon on an OLED?
Can you perceive any kind of lightning or clouds?
Besides it is advisable to make these tests with which settings?
From the first post of this thread, you should use these settings:

LG OLEDs
ISF Dark
OLED 35
Contrast 85
Brightness 50
Gamma BT.1886

Sony OLEDs
Factory Cinema Pro preset
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post #8153 of 9261 Old 01-18-2020, 01:33 PM
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A better pic of my soft bands
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post #8154 of 9261 Old 01-18-2020, 01:52 PM
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Quote:
Originally Posted by woppy101 View Post
A better pic of my soft bands
Know ur exstream picky u prob se what we se left n right lines pluss sumting that looks like ir at the bottom.

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post #8155 of 9261 Old 01-18-2020, 03:54 PM
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A better pic of my soft bands
Your panel is fine.
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post #8156 of 9261 Old 01-18-2020, 06:38 PM
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Ok, i taked a picture on my panel panasonic GZ2000. What do you think?
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post #8157 of 9261 Old 01-18-2020, 07:29 PM
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Quote:
Originally Posted by curtisdodo View Post
Ok, i taked a picture on my panel panasonic GZ2000. What do you think?

From what i have seen here it looks exceptionally good. Can you show us ~90 or 100% white ?
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post #8158 of 9261 Old 01-19-2020, 05:16 AM
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Ok, i taked a picture on my panel panasonic GZ2000. What do you think?
I think it’s a perfect as your never going to get.
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post #8159 of 9261 Old 01-19-2020, 06:26 AM
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Thanks for response.

So for you the trait species are normal? What's that due to?

This is a picture of my screen with a 100 IRE.
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post #8160 of 9261 Old 01-19-2020, 10:01 AM
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Not sure what I'm looking at in the circles, nitpicking?
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