Database Users

Heavy banding on gradients

So I just installed "the impossible game" on my brand new SGS2 and discovered there's some banding on the gradient in this game, which was not here with my Nexus One (AMOLED).
Has anyone else noticed that ? do you think it can be fixed later on (I know supercurio did some work on the first SGS's rendering) ?
edit : I'm only talking about the horizontal banding (the circular moiré is caused by the glass and visible only on the camera). Also I tried changing the brightness and background rendering but nothing helped.
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So I'm the only one experiencing that ?
I hope my phone is not faulty because I've already rooted it so I guess I can't return it anymore :-/

BlueScreenJunky said:
So I'm the only one experiencing that ?
I hope my phone is not faulty because I've already rooted it so I guess I can't return it anymore :-/
Click to expand...
Click to collapse
not got that app i'm afraid...if it was just you then you can always flash back to the standard o2 sortware, removing the root. then using a jig remove the custom binary count...thus restoring your warranty
Rumble

Try checking the loading screen for the XDA app. It should be a nice gradient of brown but I remember it was HEAVILY banded on the Atrix.
Roger should chime in with more info on this =)

No need to use an app to test:
http://www.lagom.nl/lcd-test/gradient.php
I find it hard to believe that they've gone through all that to make the best display in the field and then limited it to 16bit colors (I believe super amoled has 24bit?)

Phew, it's not just me! The two things I'm disappointed with on this phone are the screen issues and the battery life. Other than that, it's incredible.
Let's hope for major firmware upgrades and dev support!

murklor said:
No need to use an app to test:
http://www.lagom.nl/lcd-test/gradient.php
Click to expand...
Click to collapse
Thanx for the link. And of course we don't need to test on an app, I just happened to notice on this particular game, and thought it was best to avoid comparing with the browser or gallery since they could be faulty themselves (the gallery used to cause banding on the Nexus One).
I really hope it can be fixed later... I keep reading the screen is fantastic, but it doesn't look so good now (maybe it's better than pentile Matrix though)

I don't have a SGSII but you are certainly not alone, I've read a lot about this banding issue - remember reading somewhere about the possibility that it may infact be 16bit at the moment.

dinan said:
Try checking the loading screen for the XDA app. It should be a nice gradient of brown but I remember it was HEAVILY banded on the Atrix.
Roger should chime in with more info on this =)
Click to expand...
Click to collapse
heh well i'll give my unofficial opinion is that your nexus one is running the latest 2.3.3 GB which fixed the nexus one's 16 bit color banding issue. did that game show banding on your nexus one last year?
anyway my opinion theory is the super amoled plus screen is still not 24 bit color yet, probably only 16 bit like the n1 was. i cant prove this though, so take as you wish.
the nexus one on the XDA app, the spalsh screen showed lots of banding for all last year. after the 2.3.3 update the banding is finally gone on the nexus one. and google admitted that the 2.3.3 update finally brought the n1 up from 16 bit color.
so my guess is the new amoled+ wasnt finalized yet, like the n1 originally, so the SGS2 is only 16 bit color in its current firmware version.

Very disappointing, I'll stay away from the phone for now and I hope they'll fix this as soon as possible! I feared that something like this would happen when I saw the GLBenchmark data (or something like that, which stated that it's 16-bit anyway). Good to hear that the N1 had the same problem and it got fixed, though!

flooki said:
Very disappointing, I'll stay away from the phone for now and I hope they'll fix this as soon as possible! I feared that something like this would happen when I saw the GLBenchmark data (or something like that, which stated that it's 16-bit anyway). Good to hear that the N1 had the same problem and it got fixed, though!
Click to expand...
Click to collapse
It really isn't that noticeable, you can't see it under normal use when you're holding the phone at a normal distance.

Totally liveable in the short run knowing that it will get fixed. From the speed and quantity of updates, I'm guessing Samsung's trying to repair the black eye they got for pretty much ignoring the SGS.

LarcusMywood said:
It really isn't that noticeable, you can't see it under normal use when you're holding the phone at a normal distance.
Click to expand...
Click to collapse
I disagree, it's very noticeable when you have any image that has a gradient. Every time I load up the XDA app, or fire up Stupid Zombies, it's right there plain as day.
Very annoying.

yeah. it's plain obvious. for that game, i have to set the quality to low, so that the banding disappears

omg, you got to be kidding me... even my android-loaded HD2, which is definitely suffering from a hardware limit of 65536 colors, shows less banding, much less shall I say, than this supposedly 16M colored monster?? :-(

this issue wouldnt stop me from keeping the SGS2. but there were lots of specific test images used on the nexus one to highlight the issue.
in fact here is the article with test images you guys can try on your SGS2. at the time of this article, the pentile pixel matrix was the highlight. but a year later the 2.3.3 update kinda proved that the banding was NOT related to the pixels, since its totally fixed now.
interesting read nonetheless.
http://www.displaymate.com/Nexus_One_ShootOut.htm

After testing a bit more, the photo I took in the first post is THE most obvious case of banding I could find. The gradient in xda, or the one at http://www.lagom.nl/lcd-test/gradient.php are not perfect, but they don't look THAT bad.
edit : And yeah, it's not enough for me to return the phone, and I'd buy it again knowing that, but it's still annoying, especially since they insisted so much on the quality of the SAMOLED+ screen.

It's purely a software bug. I'm almost certain the physical display can handle these gradients.
On my Nexus One/S if I view that sunset on mars photo in the stock android gallery I get all that banding. If I use another gallery like QuickPic, no banding at all.
It's a similar bug when setting home page wallpapers. You get quite a bit of banding doing it the stock way, but using wallpaper set & save to set the background eliminates banding.

It's not the screen, it's the rom, the browser is set/capped to 16 bits. The gallery however actually displays in 24 bits.
This issue can be fixed with a custom rom, it's probably set to 16 bits to allow smoother web browsing, which is totally stupid because the processor is totally capable of handling smooth browsing with 24 bits display.

There is color cap in WP7, currently with some tweak my Focus does display 24bit color in Pictures hub but 16bit in any browser related app. You people may want to try more.

Possible Screen Issue. Need you guys help.

So I recently got a Galaxy Note and tried some wallpaper i used on my galaxy nexus and there is strange distortion in the image where the colors transitions. I'm interested to see if this is the Galaxy Note or just my Galaxy Note. Can you guys place the image on your devices and see if it shows the same distortion.
I attached the image to this post so you can put a clean image on your device.
Here is where the distortion is but of course you won't see it in the image unless you are looking at it on your note.
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i see wht u mean ... i tried it...but i think it happens becuz the pixels turns off under the colours becuz it's black ,, u cnt see it on lcd i guess if u tried
another possible issue it's becuz every pixel has 2 sub pixels instead of two so..it cant move to another colurs

I considered that but the Galaxy Nexus has pentile display as well that is Super Amoled. I would expect to see the same thing on that device but it might be that the pixels are a bit smaller on the GN. I honestly don't know but it concerned me a bit.

I cannot see any difference between the image on my phone and on my laptop.
I have tried with Screen Adjuster at 75% and -40 contrast, and without.

Interesting.. Do you have a white note or a blk/blue version?

This is a common issue in the Q/A section. Look for the a thread about video playback issues.
In short, the Note does a very poor job at rendering black levels. At some point, it completely drops off and instead of rendering a low level black, you get a completely turned off pixel. This creates the "black pixelated" effect in the wallpaper that you see. You can see this same effect if you took the default ICS stock wallpaper. You'll see it in the bottom left side of the wallpaper when viewed from a note.
Supercurio is working on a fix. People are also hoping that ICS will provide some relief to this issue so sit tight.
It is not a hardware defect, rest assured.
This effect will also occur in videos with dark scenes. One temporary remedy for now is to use high-resolution wallpapers and high-resolution videos. If you can, try using a 2500x1600 wallpaper or something higher. This reduces the black clipping/pixelation a little but does not eliminate it. Using a brighter themed wallpaper would help as well.
If you're using a dark wallpaper thinking that it'll save you power, don't bother. It is not significant power savings due to the fact that you'll swipe through your home screen and your brightly colored icons would have activated the parts of the wallpaper that were dark anyhow.
Cheers.

PoisonWolf said:
This is a common issue in the Q/A section. Look for the a thread about video playback issues.
In short, the Note does a very poor job at rendering black levels. At some point, it completely drops off and instead of rendering a low level black, you get a completely turned off pixel. This creates the "black pixelated" effect in the wallpaper that you see. You can see this same effect if you took the default ICS stock wallpaper. You'll see it in the bottom left side of the wallpaper when viewed from a note.
Supercurio is working on a fix. People are also hoping that ICS will provide some relief to this issue so sit tight.
It is not a hardware defect, rest assured.
This effect will also occur in videos with dark scenes. One temporary remedy for now is to use high-resolution wallpapers and high-resolution videos. If you can, try using a 2500x1600 wallpaper or something higher. This reduces the black clipping/pixelation a little but does not eliminate it. Using a brighter themed wallpaper would help as well.
If you're using a dark wallpaper thinking that it'll save you power, don't bother. It is not significant power savings due to the fact that you'll swipe through your home screen and your brightly colored icons would have activated the parts of the wallpaper that were dark anyhow.
Cheers.
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Click to collapse
ahhh haa.. Thanks for that information. I have yet to see it in a video or paid close enough attention to catch it. I'm not too worried about wallpaper but when i saw that i was like hmmmm what is this about.
Thanks for that info. That answers all my questions.

This is the black crush issue which is discussed on the video issue, it also happens with images/games and basically anything on the screen.

Same issue for me

absolutely no pixelation on my note.
smooth transition to black

garytube said:
absolutely no pixelation on my note.
smooth transition to black
Click to expand...
Click to collapse
Set your brightness to 0 and look at it in a dark room.

PoisonWolf said:
Set your brightness to 0 and look at it in a dark room.
Click to expand...
Click to collapse
I'm aware of the issues, but there is no pixelation on my note. not with this particular picture. sorry
Sent from my GT-N7000 using XDA App

Its interesting... After i read the post about the pixels being turned off the issue disappeared but I did lower the brightness and it did come back. Its apparently not an absolute under every circumstance but its definitely an issue. I'm less worried about it now though.
I gotta wait till ICS to make my final decision on whether to keep the note or to go back to the nexus

Fix for Black Crush/Color issue on Galaxy S3 AMOLED

i tried to fix the black crush/color issue on my S3 with Filter Your Screen
(13 Alpha; 255 Red; 225 Green; 255 Blue)
Original
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With filter
but there is a warning for AMOLED devices:
***OLED screen owner please read***
(AMOLED screen of Samsung Galaxy S, Super AMOLED Plus screen of Samsung Galaxy S II, etc.)
- you should use only white, gray or black filter only.
- using color filter (not white, gray or black) for a long time may cause your screen more color tint. (it's about OLED screen property, not my fault)
- using any color filter other than black will cause black pixel being not 'true black' pixel anymore. (that means some power is required for black pixel)
- if the filter does not cover all of your screen, please uninstall this app because this may cause irregular color burn to your screen.
Click to expand...
Click to collapse
is this filter going to damage the amoled screen and how much it effects the battery?

I did not realize the S3 had a problem with black crush, I though it was just us unlucky G-Note owners
We have just been using the free "Screen Adjuster" app , but it kills the battery and makes blacks gray.
John

I definitely have a black crush issue with mine. I've tested 4 and they all have it but one dev has already found a fix for it. Just be patient till its released. Shouldn't be long now.

There's indeed a heavy black crush problem on this device (beside the yellow tint...). Hope some developer will fix this. Dark photos or videos don't show any details on this screen....

NaimC said:
I definitely have a black crush issue with mine. I've tested 4 and they all have it but one dev has already found a fix for it. Just be patient till its released. Shouldn't be long now.
Click to expand...
Click to collapse
Supercurio by any chance? Good luck with that, after saying it was pretty much possible to fix the problem in the Galaxy Note after the ICS source was released, we did not hear much in the thread he started, then after a few idiots tried low tactics to get a responce from him, he got the hump and closed the thread.
This is such a stupid problem, and one that samsung customer services still refuse to acknowledge.
I was told to return my device and get a new one from a different batch, which I did, only to find the new one had the same issue. Now they want me go without my brand new device for 2 weeks while they fix it...wtf!!!
I was considering the s3, but after seeing this I am holding fire.

CONTACTMC said:
Supercurio by any chance? Good luck with that, after saying it was pretty much possible to fix the problem in the Galaxy Note after the ICS source was released, we did not hear much in the thread he started, then after a few idiots tried low tactics to get a responce from him, he got the hump and closed the thread.
This is such a stupid problem, and one that samsung customer services still refuse to acknowledge.
I was told to return my device and get a new one from a different batch, which I did, only to find the new one had the same issue. Now they want me go without my brand new device for 2 weeks while they fix it...wtf!!!
I was considering the s3, but after seeing this I am holding fire.
Click to expand...
Click to collapse
Yea, it is one of my few real niggles with this handset, but I have faith Supercurio will fix it. He mentioned that unlike the Note, the S3's fix was much easier and purely software based.
Also, I don't think changing S3's will solve the problem. It is my belief that ALL S3's suffer from this issue, it's just not all people realise or notice because it's not generally that obvious.

Now im using Filter Your Screen with (13 Alpha; 255 Red; 225 Green; 255 Blue)
question remains: is this filter going to damage the amoled screen and how much it effects the battery?

autostart on Filter Your Screen doesn't work

353523 said:
i tried to fix the black crush/color issues on my s3 with 'Super Manager 3.0'
(Screen Color Adjuster; Red +90, Green +65, Blue +90)
Then i found a similiar tool called 'Filter Your Screen'
(both available on Google play)
gives a warning for AMOLED devices:
does this only apply to the Filter Your Screen application
or does every Screen Adjuster is going to damage AMOLED screens?
(sorry for my english)
Click to expand...
Click to collapse
Could you please post some pictures showing the black crush/color issue on your s3?
My s3 does not have this issue compared with my galaxy note before.

Original
With filter

another application to fix black crush: BackLightFilter

push

Update from supercurio:
http://project-voodoo.org/articles/galaxy-s-iii-international-black-crush

353523 said:
Update from supercurio:
http://project-voodoo.org/articles/galaxy-s-iii-international-black-crush
Click to expand...
Click to collapse
Thanks for this. I'm really waiting for this. Modification by supercurio.
Will this fix ink mark too?
Or just black crush
-----------------------
Sent from my Samsung Galaxy S III using Tapatalk 2

Open this picture on your S3:
http://img256.imageshack.us/img256/2546/crush.png
if you can't distinguish the first 8 frames, than you got the black crush problem.

i cant see the first 11 from my comp or my phone.

Can someone please explain what black crush is? Is it just too dark shadows?
Sent from my Galaxy SIII

look at the pictures in the thread.........
there is not gradual scaling from black to the rest of the color spectrum....if its not bright its Super Dark, no inbetween.
as in watching movies, a dark movie like the crow, or spawn. a lot of the scenes its just to dark to reallly even tell whats going on. but on my TV or even another phone, while its still dark you can SEE the difference in Blacks which defines the shapes of that scene.
or thats what i take from it anyway. i have not read anything just from my phone to other thread and pictures this is what i think it is.

ok, thanks. Now I can name this annoying "thing" when watching avi movies. I always blamed avi files for this. But as I can remember it's a common "feature"/bug in phones. I remember the same on Nokias too.
Sent from my Galaxy SIII

i cant see the first 11 from my comp or my phone.
Click to expand...
Click to collapse
Make sure you're on maximum brightness in a somewhat dark room and play around with the mDNIe scenarios and modes.
'Dynamic' mode doesn't allow me to see the difference, but others do - but I don't like their coloring.
Now I can name this annoying "thing" when watching avi movies. I always blamed avi files for this
Click to expand...
Click to collapse
Very often it's the source file. Compression works by searching for blocks (or other geometrical shapes, e.g. triangles) of approximately the same color and storing them as having the same identic color. The "stronger" the video/image/audio compression, the more such artifacts you get. (Of course it's more complicated than that, since it has to consider 3 dimensions, them being X, Y and time T)
Sometimes players try to correct these issues with post-processing algorithms (which have their downside too), so it's more noticeable on some devices than others.

Note 3 screen issue

Hey . I bought a new note 3 (n9005) a few days ago....M little bit consious about its display problem that is:
My note 3's screen is generally a "warm tint" .I see a white or grey background (in ebooks or webpages) in portrait mode, about 1/3 of the left screen has a more cooler tone and it is gradually warmer toward the right. There is hardly noticeable when I watch movie or surfing most websites but it's quite annoying when I read e-newspaper or ebooks which are around 70% of my usage.
Note that this is not due to viewing angles since it is SAMOLED and I tried to rotate the screen / change viewing angle and the problem is persist (on the "correct" side). I tried to use my DSLR to take a shot of my screen but it can't capture the uneven color temp just like eyes. Plz guys help me. Wether its a software or hardware fault? Plz help guyz

usamasabir18 said:
Hey . I bought a new note 3 (n9005) a few days ago....M little bit consious about its display problem that is:
My note 3's screen is generally a "warm tint" .I see a white or grey background (in ebooks or webpages) in portrait mode, about 1/3 of the left screen has a more cooler tone and it is gradually warmer toward the right. There is hardly noticeable when I watch movie or surfing most websites but it's quite annoying when I read e-newspaper or ebooks which are around 70% of my usage.
Note that this is not due to viewing angles since it is SAMOLED and I tried to rotate the screen / change viewing angle and the problem is persist (on the "correct" side). I tried to use my DSLR to take a shot of my screen but it can't capture the uneven color temp just like eyes. Plz guys help me. Wether its a software or hardware fault? Plz help guyz
Click to expand...
Click to collapse
Yup mine is like that but just a little so I decided to live with it because I might get an uglier one. My S4 had the same issue but I had it changed because it was bad and the replacement has been awesome. If you do a search, there should be a thread in here somewhere with some pictures.

I did search about it....I find this issue but didn't find any solution. Is this a hardware prblm? If it is I should better replace it

I dont see this on mine. I dont think its a hardware issue. And I think n900 gets overheated not n9005
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Sent from Galaxy Note 3 SM-N9005

thahim said:
I dont see this on mine. I dont think its a hardware issue. And I think n900 gets overheated not n9005
Sent from Galaxy Note 3 SM-N9005
Click to expand...
Click to collapse
It is a hardware issue based on my own experience.

usamasabir18 said:
Hey . I bought a new note 3 (n9005) a few days ago....M little bit consious about its display problem that is:
My note 3's screen is generally a "warm tint" .I see a white or grey background (in ebooks or webpages) in portrait mode, about 1/3 of the left screen has a more cooler tone and it is gradually warmer toward the right. There is hardly noticeable when I watch movie or surfing most websites but it's quite annoying when I read e-newspaper or ebooks which are around 70% of my usage.
Note that this is not due to viewing angles since it is SAMOLED and I tried to rotate the screen / change viewing angle and the problem is persist (on the "correct" side). I tried to use my DSLR to take a shot of my screen but it can't capture the uneven color temp just like eyes. Plz guys help me. Wether its a software or hardware fault? Plz help guyz
Click to expand...
Click to collapse
Yes, it's definitively an issue with the SAMOLED. There`s a huge thread in one of the forums.
I also find it annoying when reading papers and stuff, you get an halo on the top or something similar
It's partial due to a change of the color temperature with viewing angle.
But you're lucky, I also have some darker stripes visible on grey solid background and dim screen.
I decided to live with it, but it's annoying for a premium device.
SAMOLED is the only reason I still buy samsung, I simply think that SAMOLEDs even with these quality issues, are better than LCD. But the quality check that Samsung does really need to be improved.

[petition] kill the lg g3 oversharpening!

Hey guys!
If you've been using the LG G3 for a while now you're probably heard of the oversharpening problem. While I'm not sure how many of you care about this, I have seen quite a few discussions about this problem on the forum.
I made a thunderclap petition to hopefully get LG's attention and get them to release an update that either removes the sharpening or allows us to toggle it on or off.
http://pocketnow.com/2014/07/22/lg-g3-sharpening
Thanks in advance to everyone who decides to participate.

This is another one of those 'problems' I fail to see, much like the 'lag'.....

MalekoUK said:
This is another one of those 'problems' I fail to see, much like the 'lag'.....
Click to expand...
Click to collapse
Ya i agree, I think its mostly psychological, one of those once you see it you cant unsee it, like a dead pixel.
I am running my phone on paranoidAndroid and it doesnt have sharpening and I don't see the difference , both look great

Its obviously there, even in TWRP, if you cant see it don't complain when other people can. It IS there.

Not too convinced about this thunderclap site as I dont like to share this stuff on my social accounts, but you have my support.
This sharppening is so stupid I cant even find words to describe it.
I guess it is here to trick clueless people into seing a difference with other screens ? :s
sooti said:
Ya i agree, I think its mostly psychological, one of those once you see it you cant unsee it, like a dead pixel.
I am running my phone on paranoidAndroid and it doesnt have sharpening
Click to expand...
Click to collapse
Id love to see this in a photo, could you please show us a photo of the screen with a sharpen test or black text on grey background?

What sharpening?

Vivasanti said:
What sharpening?
Click to expand...
Click to collapse
That glow/outline you see around, for example, black letters on gray background.
I can't believe there's somebody who can't see it. Check your eyes or maybe there's another display model/manufacturer?

No sharpening no lag here D851. I really dont think a petition would solve this so called issue any way. Good luck though.

denis111 said:
That glow/outline you see around, for example, black letters on gray background.
I can't believe there's somebody who can't see it. Check your eyes or maybe there's another display model/manufacturer?
Click to expand...
Click to collapse
Not everyone have this... Like me and the other guys...
Been looking for that over sharpening effect with no luck... D855 32GB

I am fairly confident that there are different quality display panels out there, the sharpening issue seems to be linked to this (which also appears to be linked to brightness levels).
Those without the issue have displays that can go to brighter levels, those with the issues tend to have dimmer displays (even on max brightness).
Those without the issue only see the issue if they go to 'sub-zero' brightness levels with an app like Lux.
My belief is LG realised that some panels were poor(er) so adjusted the sofware to assist.

If anyone can't see it, use lux to reduce brightness a bit below zero and have a look at a text heavy webpage; its awful.

Try not using lux, maybe thats the issue... Who needs below 0 brightness?

Using LUX is not a problem, it is a very good app.
If you go below 0 then moan that is your own fault, going below 0 is not a function the phone is designed to do and when you "mod" you do so at your own risk.
I do go below 0 for night mode, but you don't see me on here moaning about sharpening issues.
______
That being said, some people (not me) do have issues with sharpening when their phone is above 0, but I believe this is because their phones are naturally darker, so their say 10 brightness might be the same as my -10, which is why they are seeing sharpening in 'normal' conditions when I am not.

What's brightness got to do with it? Its just as obvious at 100% as it is below 0.
All G3s have it, some people just cant see it, if you cant think yourself lucky.

ChrisM75 said:
What's brightness got to do with it? Its just as obvious at 100% as it is below 0.
All G3s have it, some people just cant see it, if you cant think yourself lucky.
Click to expand...
Click to collapse
I'm OCD with anything like this, and It ain't present on my G3

ChrisM75 said:
What's brightness got to do with it? Its just as obvious at 100% as it is below 0.
All G3s have it, some people just cant see it, if you cant think yourself lucky.
Click to expand...
Click to collapse
"all g3's have it"..... no they don't at least not at normal operating levels.
If my display is anywhere between -2 and +100 brightness there is no sharpening effect at all, no glow, no weird text no nothing it is a perfect display - this is a fact, not my eyes.
if I go to around -4 you can see it until I go down to about -10 then it stops again.
I am not questioning the issue, I have seen and compared my display with others who do have the problem and it can be a real issue, but not everyone has it.
As for what does brightness have to do with it, I am trying to find out what the differences are between those that have the issue and those that don't and the only common denominator is the fact that all the displays that have the issue cannot go as bright as those that do not have the issue.
e.g. 100% brightness on my phone will be significantly brighter than 100% on someone who suffers from oversharpening.
This is also why when the G3 was first released there were lots of threads on here about the display being too dim.

Then take a picture and prove it. Its on every variant, every firmware. Its there.

ChrisM75 said:
Then take a picture and prove it. Its on every variant, every firmware. Its there.
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Click to collapse
because variants and firmware doesn't alter the quality of the LCD panel!
are you not reading? There are plenty of people here on XDA who say they have no issue, including quite a few with very high credibility levels, who have nothing to gain from lying.
And sorry I cannot currently take a picture as I am not in the habit of carrying a second camera device around with me.....

Lennyuk said:
because variants and firmware doesn't alter the quality of the LCD panel!
are you not reading? There are plenty of people here on XDA who say they have no issue, including quite a few with very high credibility levels, who have nothing to gain from lying.
And sorry I cannot currently take a picture as I am not in the habit of carrying a second camera device around with me.....
Click to expand...
Click to collapse
Does it appear if you take a screenshot (Power + Vol Dwn)?
I have a rogers D852 and tried to replicate the Black text on gray background and I don't see it. Brightness on 100% but I normally keep it at Auto.
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Its got nothing to do with the LCD panel quality, its an artificial post processed effect, its nothing to do with the hardware. Ive seen the phones of some people who say they dont have it, they have it! I bet if I saw your phone id see it at all brightness levels. Its less obvious at low brightness, but thats just a natural result of the dim display, its still there.
I don't care about 'credibility'. Just because someone is good at making ROMs or whatever it doesn't mean they have good eyes. They have the effect, they just don't notice it. There is no other explanation for why LG released the phone with this effect, its hideous to those that see it.