OLED Screen Uniformity Discussion-Banding and Vignetting - Page 247 - AVS Forum | Home Theater Discussions And Reviews
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post #7381 of 7786 Old 06-28-2019, 08:38 AM
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[/quote]Is your tv gamma 2.4 or 2.2 on this picture and what is you oled light set at as this seems bright for ire at 5%? [/QUOTE]

Hi, well after watching Vincent’s unboxing video of the A9G I’ve switched the Picture mode to “Custom” with the follow setting below.
Brightness: Max
Contrast: 90
Gamma: -2
Black Level: 50
Black Adj: Off
Adv. contrast Enh: Off
Peek Luminance: Medium

Clarity Settings >
Reality creation: manual
Resolution: 20
Random noise reduction: Medium
Digital noise reduction: Medium
Smooth gradation: High

Motion >
Motion flow : Custom
Smoothness: 1
Clearness: Low
CineMotion: Auto

 

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post #7382 of 7786 Old 06-30-2019, 02:06 AM
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This is the panel on my 77' A9G. I don't think I feel good about it. Its not this bad in person, but for the damn price of this tv, I feel like It should be better. Granted, this was in a pitch black room with cinema picture mode, gamma set to min, brightness 45, and peak luminance at medium
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post #7383 of 7786 Old 06-30-2019, 03:03 AM
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Yep. It could be better. I thought Sony OLED is better in terms of near black uniformity
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post #7384 of 7786 Old 06-30-2019, 05:37 AM
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Quote:
Originally Posted by steve_theKRaken View Post
This is the panel on my 77' A9G. I don't think I feel good about it. Its not this bad in person, but for the damn price of this tv, I feel like It should be better. Granted, this was in a pitch black room with cinema picture mode, gamma set to min, brightness 45, and peak luminance at medium
How many hours on it? I would put your brightness back to 50 and set 2.4 gamma and take another picture.
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post #7385 of 7786 Old 06-30-2019, 07:23 AM
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Quote:
Originally Posted by RadTech51
Is your tv gamma 2.4 or 2.2 on this picture and what is you oled light set at as this seems bright for ire at 5%?

Hi, well after watching Vincent’s unboxing video of the A9G I’ve switched the Picture mode to “Custom” with the follow setting below.
Brightness: Max
Contrast: 90
Gamma: -2
Black Level: 50
Black Adj: Off
Adv. contrast Enh: Off
Peek Luminance: Medium

Clarity Settings >
Reality creation: manual
Resolution: 20
Random noise reduction: Medium
Digital noise reduction: Medium
Smooth gradation: High

Motion >
Motion flow : Custom
Smoothness: 1
Clearness: Low
CineMotion: Auto

Are you sure you need the noise reduction settings turned on and Smooth Gradation at high? If you test smooth gradation on a variety of content, you will notice that detail is lost as Smooth Gradation increases beyond low. I've actually never seen any banding with Smooth Gradation at low.
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post #7386 of 7786 Old 06-30-2019, 08:21 AM
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Quote:
Originally Posted by steve_theKRaken View Post
This is the panel on my 77' A9G. I don't think I feel good about it. Its not this bad in person, but for the damn price of this tv, I feel like It should be better. Granted, this was in a pitch black room with cinema picture mode, gamma set to min, brightness 45, and peak luminance at medium
Hmm banding is one thing but that swooping light to dark from bottom to top is not normal imo.
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post #7387 of 7786 Old 06-30-2019, 09:42 AM
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Quote:
Originally Posted by JD23 View Post
Quote:
Originally Posted by RadTech51
Is your tv gamma 2.4 or 2.2 on this picture and what is you oled light set at as this seems bright for ire at 5%?

Hi, well after watching Vincent’️s unboxing video of the A9G I’️ve switched the Picture mode to “Customâ€Â with the follow setting below.
Brightness: Max
Contrast: 90
Gamma: -2
Black Level: 50
Black Adj: Off
Adv. contrast Enh: Off
Peek Luminance: Medium

Clarity Settings >
Reality creation: manual
Resolution: 20
Random noise reduction: Medium
Digital noise reduction: Medium
Smooth gradation: High

Motion >
Motion flow : Custom
Smoothness: 1
Clearness: Low
CineMotion: Auto

Are you sure you need the noise reduction settings turned on and Smooth Gradation at high? If you test smooth gradation on a variety of content, you will notice that detail is lost as Smooth Gradation increases beyond low. I've actually never seen any banding with Smooth Gradation at low.
Well most of the content I view is not from blu-ray sources it’s from digital streaming content like from my 4K Apple TV, Netflix, etc. I’ve noticed that a lot of the content stored in the cloud is very compressed or doesn’t handle the compression artifacts as well as other high quality sources. Unfortunately you’re never really going to know what compression they used to store the picture in the cloud other than what you see and observe with your own eyes. Some are scanned in at a high quality I’ve noticed while others like the move “The Martian” for example are in very high quality or just filmed better altogether and in that movie you’re absolutely right you will notice some cloud details in the martian atmosphere for example will lost when using these settings. However I’m primarily using these settings for when I am watching something that really does need it. These enhancements features for smoothing out artifacts / hiding the noise is one of the reasons I chose SONY over LG.
I’ll take some pictures of the artifacts that really bother me post them below for example. Note: It’s not gonna look this bad in person it’s just to get the point across

Note: The first set of pictures are from the movie “Iron Man 2” the first one will be exaggerated to emphasize the issue. Both are zoomed in to show you better what Digital noise reduction and Random noise reduction is doing to clean up the picture. The first picture is with everything turned off.

Note: In the last pictures Smooth gradation is very helpful in reducing noticeable banding scene from the pictures below in “Harry Potter” and in the 4K HDR Demo with the asteroid in outer-space from the contrails.

PS: I just added another picture here is an example of what I’m talking about. This is still with the settings for both Digital noise reduction & smooth gradation on high. Look at the sunglasses on the right side facing you anatomically and notice the noise artifacts in the center. I’m hoping after a proper calibration this can be illuminated altogether but I have my doubts. This is from the movie “Ultraviolet” in case you want to check it out for yourself.
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post #7388 of 7786 Old 06-30-2019, 12:06 PM
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Quote:
Originally Posted by Adamd View Post
How many hours on it? I would put your brightness back to 50 and set 2.4 gamma and take another picture.
Will do. Its pretty new to be honest. 1 week old. How do I check the hours that has been put on it? My gf uses it as well so I'm not sure.

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post #7389 of 7786 Old 06-30-2019, 12:41 PM
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Here are some photos with the Gamma up to -1 and then 0. With the gamma and brightness turned up, its definitely not as bad.

I have to go into the service menu to check the hours on the panel yes? I can't remember how I did that on my A1E
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post #7390 of 7786 Old 06-30-2019, 01:29 PM
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Quote:
Originally Posted by steve_theKRaken View Post
Here are some photos with the Gamma up to -1 and then 0. With the gamma and brightness turned up, its definitely not as bad.

I have to go into the service menu to check the hours on the panel yes? I can't remember how I did that on my A1E
That looks good, I would keep that.
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post #7391 of 7786 Old 06-30-2019, 02:54 PM
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That looks really solid. It will continue to get better the first 200 hours too. I don’t think you’ll see that in most content

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post #7392 of 7786 Old 07-01-2019, 12:45 AM
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That looks really solid. It will continue to get better the first 200 hours too. I don’t think you’ll see that in most content
I actually notice it in content quite a bit.

Maybe I got lucky with my 65 A1E because I rarely ever see the bands on that one. I’m wondering if it’s just more noticeable on the 77 because there is quite a bit more screen. Anyways, I’m praying it gets better over the first 200 hours. I’d imagine we’re at the 20 hour mark so far, give or take a few hours.

How do I access that service menu to check the usage?
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post #7393 of 7786 Old 07-01-2019, 09:06 AM - Thread Starter
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I actually notice it in content quite a bit.

Maybe I got lucky with my 65 A1E because I rarely ever see the bands on that one. I’m wondering if it’s just more noticeable on the 77 because there is quite a bit more screen. Anyways, I’m praying it gets better over the first 200 hours. I’d imagine we’re at the 20 hour mark so far, give or take a few hours.

How do I access that service menu to check the usage?
I sent you a PM.

Hopefully more hours will clear some of that up. How’s the tinting?

More evidence that keeping my A1E is the right way to go. Of course I’m just one of those unlucky types who end up with crappy panels so I’ll need a ton of evidence that it’s worth going through the hassle of upgrading.

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post #7394 of 7786 Old 07-01-2019, 09:16 AM
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I sent you a PM.

Hopefully more hours will clear some of that up. How’s the tinting?

More evidence that keeping my A1E is the right way to go. Of course I’m just one of those unlucky types who end up with crappy panels so I’ll need a ton of evidence that it’s worth going through the hassle of upgrading.
When I looked at 100% white, there was zero tinting that I could find on my A9G.

My A1E has pink tint across the right side of the panel.

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post #7395 of 7786 Old 07-01-2019, 09:20 AM - Thread Starter
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When I looked at 100% white, there was zero tinting that I could find on my A9G.

My A1E has pink tint across the right side of the panel.
That’s great. I have yellow tint on the left which I’m convinced can look better or worse depending on the day. Even though I have what I would call zero yellow tint on the right side with a white screen, if a yellow screen pops up I can see tinting or “yellow vignetting” on both sides.

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post #7396 of 7786 Old 07-03-2019, 03:39 AM
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That’s great. I have yellow tint on the left which I’m convinced can look better or worse depending on the day. Even though I have what I would call zero yellow tint on the right side with a white screen, if a yellow screen pops up I can see tinting or “yellow vignetting” on both sides.
Yes, this is how it works: different colors trigger different result.

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post #7397 of 7786 Old 07-06-2019, 03:39 PM
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Here is how mine Sony 65AF8 looks like.

The first pic is with Cinema Pro picture mode and the brighter one is with my own custom setting with +1 Gamma.
It's a quite new tv with 159h on it.

Banding
As you can see i got a very faint half-circle shape in the middle and one line on the right, but i cannot see any of these in real content even when trying hard in dark scenes eg. the dark riding scenes from from Marco Polo S1 E2 and E3.

Color
I got some color uniformity discrepancies which sort of can be seen on left side of the screen in image 2 where the grey is like one tick darker.
Thus I can only see this on some certain bright colors with test patterns, like bright orange, bright green etc, however I can't see any of this on solid RGB nor can I see any tint in pure white so thats good.
This also is nothing I can see watching real content, so overall I'm very happy "so far" with my panels uniformity.
I'll see if a can catch the ones I do see on camera another day.


Hopefully this doesnt change or gets worse when it's time for the first Pixel Refresh.
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post #7398 of 7786 Old 07-06-2019, 06:38 PM
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Originally Posted by Cineoholic View Post
The first pic is with Cinema Pro picture mode and the brighter one is with my own custom setting with +1 Gamma.
It's a quite new tv with 159h on it.

Banding
As you can see i got a very faint half-circle shape in the middle and one line on the right, but i cannot see any of these in real content even when trying hard in dark scenes eg. the dark riding scenes from from Marco Polo S1 E2 and E3.

Color
I got some color uniformity discrepancies which sort of can be seen on left side of the screen in image 2 where the grey is like one tick darker.
Thus I can only see this on some certain bright colors with test patterns, like bright orange, bright green etc, however I can't see any of this on solid RGB nor can I see any tint in pure white so thats good.
This also is nothing I can see watching real content, so overall I'm very happy "so far" with my panels uniformity.
I'll see if a can catch the ones I do see on camera another day.


Hopefully this doesnt change or gets worse when it's time for the first Pixel Refresh.
That’s a very clean panel. Consider yourself lucky. If your worried how the panel will look after the first 2000 hour cycle you could always run one on your own. When I get a new oled I run it for 100-200 hours then run one pixel cycle before the return policy is up so there’s no surprises. I’ve owned 4 oled over the years and after a pixel refresh they may show banding right after but it always went away after another 4-5 hours of watching and the auto comp cycle runs.
VidPro and Cam1977 like this.
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post #7399 of 7786 Old 07-07-2019, 09:11 AM
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Quote:
Originally Posted by Adamd View Post
That’s a very clean panel. Consider yourself lucky. If your worried how the panel will look after the first 2000 hour cycle you could always run one on your own. When I get a new oled I run it for 100-200 hours then run one pixel cycle before the return policy is up so there’s no surprises. I’ve owned 4 oled over the years and after a pixel refresh they may show banding right after but it always went away after another 4-5 hours of watching and the auto comp cycle runs.
Thanks for the tip!
I'm outside the return policy thou so I will just have to cross my fingers and hope that it doesn't become a issue when it's due for the manual Pixel Refresh.
But if it does I will surely use my 5yr extended warranty with the store i bought it from.

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post #7400 of 7786 Old 07-07-2019, 10:19 AM
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Quote:
Originally Posted by Cineoholic View Post
The first pic is with Cinema Pro picture mode and the brighter one is with my own custom setting with +1 Gamma.
It's a quite new tv with 159h on it.

Banding
As you can see i got a very faint half-circle shape in the middle and one line on the right, but i cannot see any of these in real content even when trying hard in dark scenes eg. the dark riding scenes from from Marco Polo S1 E2 and E3.

Color
I got some color uniformity discrepancies which sort of can be seen on left side of the screen in image 2 where the grey is like one tick darker.
Thus I can only see this on some certain bright colors with test patterns, like bright orange, bright green etc, however I can't see any of this on solid RGB nor can I see any tint in pure white so thats good.
This also is nothing I can see watching real content, so overall I'm very happy "so far" with my panels uniformity.
I'll see if a can catch the ones I do see on camera another day.


Hopefully this doesnt change or gets worse when it's time for the first Pixel Refresh.
Looks great! Refreshing to see and hear about the good experiences with uniformity..
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post #7401 of 7786 Old 07-07-2019, 10:49 AM
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Ok guys, I read the first post on what settings to set for these slides. I also understand that you really want 100-200 hours before you check them out, but I wanted to do an experiment at the start, then after break-in.

Attached at the 5% gray and 100% white slides on the LG65C9. These are only with 2 hours on the set and 1 Pixel Comp run.

I'll go off what others think, but right away, I think I have a decent banding situation. The tinting seems to be raring it's head on the 100% white shot, but how bad is it? I think I may have noticed the more greenish on the left 1/4th of the screen in regular content. It was very hard to see and only one the same color backgrounds so far. More viewing of different content will need to take place.

Let me know what you think of both of these slides as it compares to others that you have seen.
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post #7402 of 7786 Old 07-07-2019, 01:11 PM
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Some of you long timers might remember me from awhile ago in this. I went through the great experience of dealing with LG for my banding on my b7a which is visible on nearly every show/movie i watch. They refused to admit i have any banding and were really rude and dismissive with the entire process including lying and saying they have done something only to find it had not happened.

I’m pleased to say, this was a major factor in my decision of which 77” oled to purchase. It was the leading factor in my recent order of the 77” a9g Sony. I hope others speak with their wallet to punish companies not standing behind their product!

I should have it in 1-2 weeks but might not take shots of the banding. I don’t want to see where they are if i don’t see them in content. Will keep everyone updated regardless on how the new panel treats me!
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post #7403 of 7786 Old 07-08-2019, 02:51 PM
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I'll go off what others think, but right away, I think I have a decent banding situation. The tinting seems to be raring it's head on the 100% white shot, but how bad is it? I think I may have noticed the more greenish on the left 1/4th of the screen in regular content. It was very hard to see and only one the same color backgrounds so far. More viewing of different content will need to take place.
That resembles the tinting pattern on my 65C9. Apparently it's normal. Calibrators on this forum have said they've seen it on all panels they've calibrated. So your set isn't out of the ordinary and not something worth playing panel lottery for.

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post #7404 of 7786 Old 07-08-2019, 02:57 PM
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Originally Posted by Yukon Trooper View Post
Quote:
Originally Posted by NismoZ View Post
I'll go off what others think, but right away, I think I have a decent banding situation. The tinting seems to be raring it's head on the 100% white shot, but how bad is it? I think I may have noticed the more greenish on the left 1/4th of the screen in regular content. It was very hard to see and only one the same color backgrounds so far. More viewing of different content will need to take place.
That resembles the tinting pattern on my 65C9. Apparently it's normal. Calibrators on this forum have said they've seen it on all panels they've calibrated. So your set isn't out of the ordinary and not something worth playing panel lottery for.
Thank you, that makes me feel a bit better about the tint situation. (Still bitter at the industry for making 3k displays have any issues. Maybe we should start a support group, lol)
I think my banding is on the better side of things, right?
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post #7405 of 7786 Old 07-08-2019, 03:04 PM
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I think my banding is on the better side of things, right?
Looks good to me, but always best to wait 200+ hours, a few auto comps and at least one manual comp to get an idea on banding. Having said that, it seems LG has improved banding substantially this year. Almost all of the C9 photos posted here and elsewhere look really good for dark uniformity, even out-of-the-box.

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post #7406 of 7786 Old 07-08-2019, 03:14 PM - Thread Starter
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Thank you, that makes me feel a bit better about the tint situation. (Still bitter at the industry for making 3k displays have any issues. Maybe we should start a support group, lol)
I think my banding is on the better side of things, right?
Hopefully you will not care after a while. That’s where I am, but I’m not an I don’t care anymore just loving it person. I’m an I don’t care and don’t really enjoy my flawed display after having a TV that seemed like an event every time I turned it on type person.

The television screen is the retina of the mind's eye.
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post #7407 of 7786 Old 07-08-2019, 08:25 PM
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The less I pay attention to this thread, the less I notice my banding! Correlation or causation??
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post #7408 of 7786 Old 07-09-2019, 03:29 AM
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The less I pay attention to this thread, the less I notice my banding! Correlation or causation??
My panel changes a lot. I actually had a solid week a month ago where i noticed no banding on my set! Then it must have run a new comp cycle and the next thing i watched had incredibly bad banding where scenes i wouldn’t expect to see bands had them. My set is maddening sometimes
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TV: Sony A9G 77" Oled & LG B7A 65" Oled
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post #7409 of 7786 Old 07-11-2019, 12:14 PM
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This is a c9 and that black strip across the top on the 5 percent gray annoys me but I dont see any visible banding or annoying banding i should say in content. My question is will that black strip at the top fade or its permanent. I've ran 1 manual and have about 80 hours on the set

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post #7410 of 7786 Old 07-11-2019, 12:29 PM
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^that strip will come and go, but dont think it will go away completely...i had a similar strip on my old C7.
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