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If you think your screen is not uniform, then you know the way it is not uniform. If you haven't realized such thing, please leave this thread for your sanity :cyclops:
UPDATE:
I have done some research and experiments and came up with this solution. If you suffer from uniformity problems, this might be useful. If you are a developer, please consider building around this idea!
Aim :
To make our screen look perfectly uniform without any tint/temperature problems.
What you need:
Download these from play store:
-Screen Filter
-Gradient Wallpaper
Also on your computer [optional , for fine-tuning] :
-Adobe photoshop
How to
1) Open white/gray solid images to observe your uniformity issues. Take a pen and write down, or even make a simple drawing ( eg. left edge is more yellow and right edge is more blue)
2) Launch gradient wallpaper app. Look at your notes and make a gradient which is exactly the negative of your initial tint (eg. left edge is more blue and right edge is more yellow). Save it.
3) Launch screen filter app. Select the gradient image you saved and load it as a filter. Increase the transparency and calibrate it to your liking.
4) (optional) Use Photoshop for much more flexibility with places of gradients/ shapes etc.
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Hello everyone,
Nexus 4 is an awesome phone with minor imperfections. One of them is washed out colors which is fixed by many custom kernels.
The other imperfection is light bleeding, which is a hardware issue. However this and similar issues with hardware causes non-uniformity (or unevenness) across the display specially if it is held horizontally on a white/gray backgrounds.
I have used 10-15 different handled device with ips displays and %80 of them had a visible non-uniformity. Some of us might be totally fine with it while some of us like myself might want better calibration.
HERE IS THE REQUEST:
I have tried fauxdisplay/kernel for a week and I can customize my screen pretty much however I want. The problem is this kernel/app applies the rules for all of the pixels. It would me awesome if we could have 'local' calibrations. (people who use photoshop should be familiar with adjustment brush that changes properties of chosen area).
Tell me what you think about this.
Re: [request for developers] Local screen calibration
What do you mean exactly? And why?
Sent from my Nexus 4 using xda premium
Re: [request for developers] Local screen calibration
Why would we want this? I'm not sure I understand what use this would have.
Sent from my Nexus 4 using xda premium
mark manning said:
Why would we want this? I'm not sure I understand what use this would have.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
To fix non uniformities across the screen . For IPS screens, when you tilt left you willsee aa yellow tint on the screen, when you tilt right you will see a blue one. If you are looking directly without tilting, right side will be bluer than left side (like a gradient most visible with gray) To fix this, we can tell our kernel to render left side little bit bluer to reduce the gradient effect.
Hope this is explanatory.
maxwellr said:
To fix non uniformities across the screen . For IPS screens, when you tilt left you willsee aa yellow tint on the screen, when you tilt right you will see a blue one. If you are looking directly without tilting, right side will be bluer than left side (like a gradient most visible with gray) To fix this, we can tell our kernel to render left side little bit bluer to reduce the gradient effect.
Hope this is explanatory.
Click to expand...
Click to collapse
i get what you mean, but im sure its a LOT more work than just that..
on another note, i read that the optimus g rom on the nexus makes the screen look absolutely amazing - im waiting till someone ports the settings for that onto our phone and hope that this calibration issue ends there.. too much time is being wasted on this (for good measure, yes. but still)
Re: [request for developers] Local screen calibration
maxwellr said:
Hello everyone,
Nexus 4 is an awesome phone with minor imperfections. One of them is washed out colors which is fixed by many custom kernels.
The other imperfection is light bleeding, which is a hardware issue. However this and similar issues with hardware causes non-uniformity (or unevenness) across the display specially if it is held horizontally on a white/gray backgrounds.
I have used 10-15 different handled device with ips displays and %80 of them had a visible non-uniformity. Some of us might be totally fine with it while some of us like myself might want better calibration.
HERE IS THE REQUEST:
I have tried fauxdisplay/kernel for a week and I can customize my screen pretty much however I want. The problem is this kernel/app applies the rules for all of the pixels. It would me awesome if we could have 'local' calibrations. (people who use photoshop should be familiar with adjustment brush that changes properties of chosen area).
Tell me what you think about this.
Click to expand...
Click to collapse
You are asking too much.
Yes you are. LCD screens cannot have regional calibration.
Sent from my Nexus 4 using xda premium
richteralan said:
You are asking too much.
Yes you are. LCD screens cannot have regional calibration.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
I don't know how current calibrating is done, so I'd be happy if some developer can help me out.
There are possiblities:
software filtering -> gpu-> driver-> screen (slow)
gpu-> graphic matrix-> software calibration -> driver-> screen (fast)
gpu-> graphic matrix-> driver-> calibration within driver with given values -> screen (fastest)
if it is the first one, it can easily be done. You can choose what to do to any individual pixel. For example, It is done when there are pop-up windows. While pop-up is bright and visible, remaining area is darkened/grayed with some software processing. So with root access, a program might make sure that some area of the screen is always dimmer, brighter or more saturated than other, while it is running on background. (like a filter that is always on top. This for sure can be done: look at many apps that you can slide from left anywhere within android and some menu pops up. What if instead of a menu %85 transparent and blue [to fix yellowing] solid color stays there?)
If it is second one, well, then it is hard as it needs a lot of C programming- testing. But it will be faster than first option.
Check the first post for the update!
If you're in love with your Note 4, don't install the following app. But if you the type of person that wants to know everything, is curious, and doesn't mind fiddling around with the hardware on Note 4, you're welcome to install the following app, and share your feedback,
Install supercurio's Voodoo Screen Test Patterns App,
https://play.google.com/store/apps/details?id=org.projectvoodoo.screentestpatterns&hl=en
VIEWER DISCRETION ADVISED
Bring the Brightness level down to minimum visible brightness (Preferably when viewing Near Grayscale); even in a well-lit room, or preferably dark setting, you will notice how Samsung managed to hide the Mura Effect on their latest iteration of AMOLED Panels. Some will see notice the predisposing lines, blobs, banding, and two-tone (or even more) gradients, which expresses the true organic nature of AMOLED Panels (Discussed as far back as the original Galaxy S phone).
Now beware, the Mura Effect is normal and does not make your screen or device defective.
Thanks to Samsung's preset for low Brightness levels implemented on the Galaxy S4, S5, Note3, and Note 4, and newer devices (can only be modified via third-party apps), its really hard to make out the Mura Effect on the newer models. Black color is Black, and Samsung's software mod forces no voltage to be fed to the AMOLED Panel when black is displayed, thus the pixels are literally turned off.
I've seen some users post pictures of the smearing (deep purple and pink tint) at "Normal" lower brightness levels (within Samsung's preset levels), which should be taken into account; I suggest them to exchange their devices or replace their displays until they get something better their eyes can be content with.
Every Note 4 and AMOLED device has these anomalies, however, the degree to which the anomalies are visible will vary from device to device. Some will be unable to make out the anomalies thanks to the nature of their displays (Warmer-toned or Cooler toned displays), and should be grateful and move on. If the anomalies are too obvious, I would suggest replace the screen, or live with it and accept AMOLED at its true best.
Downloaded the app and after messing around for a bit I can say that I am unable to make out the anomalies.
The screen quickly turns to black after messing around for a bit. It's good to know that Samsung has made "some" progress in alleviating some of the concerns most previous Galaxy device owners had particularly pertaining to AMOLED displays. However, we all are still far from seeing all AMOLED displays equal and consistent with one another. Some favor warmer colors whereas others favor cooler colors, and some in-between, thus variances will be prevalent until a final solution comes into play.
airwa1kin7 said:
Downloaded the app and after messing around for a bit I can say that I am unable to make out the anomalies.
Click to expand...
Click to collapse
My 10+ arrived yesterday and so far I've been impressed with two exceptions. As mentioned in other threads my finger sensor leaves a lot to be desired but my point of this thread was about an odd look my screen had. It was not bright and sharp like my 8+. There was a yellowish tint. I went into the 8+ to see if there were any differences in my display settings and I fixed the problem my by changing the screen mode on the 10+ from natural to vivid (Settings > Display > Screen Mode). The options were different on the 8+ but on the newer version it's one of the two, vivid or natural.
Just wanted to share that in case anyone else is having the same issue.
One question. My 10+ came with the screen protector and I've never had one. I assume they take away at least a small percentage of your brightness and clarity? I'm tempted to remove mine to see.
scmobileman said:
My 10+ arrived yesterday and so far I've been impressed with two exceptions. As mentioned in other threads my finger sensor leaves a lot to be desired but my point of this thread was about an odd look my screen had. It was not bright and sharp like my 8+. There was a yellowish tint. I went into the 8+ to see if there were any differences in my display settings and I fixed the problem my by changing the screen mode on the 10+ from natural to vivid (Settings > Display > Screen Mode). The options were different on the 8+ but on the newer version it's one of the two, vivid or natural.
Just wanted to share that in case anyone else is having the same issue.
One question. My 10+ came with the screen protector and I've never had one. I assume they take away at least a small percentage of your brightness and clarity? I'm tempted to remove mine to see.
Click to expand...
Click to collapse
Keep in mind that Natural should follow the sRGB color space. Most displays have default colors that are too cold/blue (high color temperature, and I know, it's counter intuitive but that's what they call it ). Relative to "colder screens", sRGB will seem warmer / more yellow. But it's also much more accurate as far as color representation goes, and should be closer to what you see with your eyes unfiltered by sunglasses. This assumes whatever image you're looking at is also taken with neutral colors and not over saturated.
I usually calibrate all my screens to have more accurate colors, at the expense of that "pop" you can get with AMOLED screens.
Sakete said:
Keep in mind that Natural should follow the sRGB color space. Most displays have default colors that are too cold/blue (high color temperature, and I know, it's counter intuitive but that's what they call it ). Relative to "colder screens", sRGB will seem warmer / more yellow. But it's also much more accurate as far as color representation goes, and should be closer to what you see with your eyes unfiltered by sunglasses. This assumes whatever image you're looking at is also taken with neutral colors and not over saturated.
I usually calibrate all my screens to have more accurate colors, at the expense of that "pop" you can get with AMOLED screens.
Click to expand...
Click to collapse
That "pop" is exactly what I'm looking for so would you suggest I stick with vivid? I understand what you're saying about the colors but it's not an area I'm real familiar with. I'm just not seeing a brightness on the level I prefer and yes I have it set as high as possible.
scmobileman said:
That "pop" is exactly what I'm looking for so would you suggest I stick with vivid? I understand what you're saying about the colors but it's not an area I'm real familiar with. I'm just not seeing a brightness on the level I prefer and yes I have it set as high as possible.
Click to expand...
Click to collapse
Yeah, you'll want to leave it on vivid if you want that "pop". I also know that when my current Google Pixel got the Pie update, the auto-brightness was a bit finicky at first, as it's an "intelligent" brightness and it takes a few days to learn your preferences for the right brightness based on the lighting conditions. So that might be the case with the S10 as well, and I should be picking up mine tomorrow so then I'll know more about how it works exactly.
Also I think I read somewhere that the S10 will only get very bright in direct sunlight if it's set to auto-brightness. You apparently can't set it to that level manually. So perhaps play around with that a bit.
Any news on this? I just picked up my s10 plus and the screen has a yellow tint and seems less bright compared to my note 8...not sure if I just ask for a replacement. Thanks!
I always run mine on Vivid and WQHD and as expected the S10 is spectacular
Sent from my SM-G975F using Tapatalk
im surprised there isnt adaptive display mode like on the previous models this really made different colours pop. mine seems to have a bit of an orange tint
I also found it too yellow.. Go at the advanced settings and reduce the green close to the minimum and the red just a little bit. It will look white again..
Because of the sun light some people find yellowish colours more natural..
Yeah the whites don't look good on the s10 compared to my note 8
Just compared mine with different demo models and they all seem a bit more 'natural'. No need to swap it for a different one, allthough they all are a bit different...one more leaning towards blue white and the other to yellowish white.
Well coming from pixel 3, to me, Colors looks natural. S10 screen is crisp and clear. Nobody can best sammy when it comes to screens. I am using natural mode. Vivid mode is having too much pop.
Sent from my SM-G973F using Tapatalk
scmobileman said:
My 10+ arrived yesterday and so far I've been impressed with two exceptions. As mentioned in other threads my finger sensor leaves a lot to be desired but my point of this thread was about an odd look my screen had. It was not bright and sharp like my 8+. There was a yellowish tint. I went into the 8+ to see if there were any differences in my display settings and I fixed the problem my by changing the screen mode on the 10+ from natural to vivid (Settings > Display > Screen Mode). The options were different on the 8+ but on the newer version it's one of the two, vivid or natural.
Just wanted to share that in case anyone else is having the same issue.
One question. My 10+ came with the screen protector and I've never had one. I assume they take away at least a small percentage of your brightness and clarity? I'm tempted to remove mine to see.
Click to expand...
Click to collapse
So even I had the same thoughts when I got hands on my S10+. Was worried the screen had some issues and hence went to the Samsung store and compared with the display phones - there was no difference between what I had and the display ones. However, when I compared with my S8+ I found that S8+ display was more blue-ish than S10+. The response from Samsung was that by default Samsung had toned down the blue light in the S10 screens for improved readability.
However, I feel the colors had lesser contrast in my S10+ screen compared to my S8+ and that is a bummer - at least for me!
dragster88 said:
So even I had the same thoughts when I got hands on my S10+. Was worried the screen had some issues and hence went to the Samsung store and compared with the display phones - there was no difference between what I had and the display ones. However, when I compared with my S8+ I found that S8+ display was more blue-ish than S10+. The response from Samsung was that by default Samsung had toned down the blue light in the S10 screens for improved readability.
However, I feel the colors had lesser contrast in my S10+ screen compared to my S8+ and that is a bummer - at least for me!
Click to expand...
Click to collapse
I have found that applying "blue light filter" and setting it's effect to minimum fixes the color saturation and reverses the washed out look on images. Another way is to go into visibility enhancements -> color adjustment -> then either apply a filter there like "Tritan" or "personalize color" and follow the steps. To me I cannot see any difference between the above steps or just simply applying "blue light filter" set to minimum. To me both look to correct the color saturation about the same.
I hope this helps you!
Hopefully they fix this soon!
Cheers ?
-Dorian
Hi guys. I think you might be encountering the display saturation bug.
The Galaxy S10 (USA Unlocked version in my case) has a peculiar bug in the display. When a photo is fully opened in an app such as Gallery, the photo's saturation becomes muted and cold (even with the display set to vivid and warm). It's very apparent with skin tones. I first noticed this when comparing identical photos between my S10 and S9.
If you hit the app switcher, the minimized card displays the photo with the correct saturation. Maximizing the app, causes the image to immediately turn washed out and Muted. This is appears to be a system wide bug, as it shows up in Gallery, Instagram and other places. I could not get this to show up with a screen recorder, since it's the display changing the image. I recorded it with my camera, but it appears very subtle. In person it is very obvious. I don't know how many are affected by this bug, but I'm seeing others talk about it on forums. Appears to affect all galaxy S10 models.
For a temporary fix, you can enable the blue light filter and set it to the MINIMUM setting. This will display photos in the Gallery and other apps with the correct color saturation. Hopefully Samsung will address this with a software update!
---------- Post added at 04:53 PM ---------- Previous post was at 04:50 PM ----------
https://youtu.be/uUmgd-QrOuA
Supraguy88 said:
Hi guys. I think you might be encountering the display saturation bug.
The Galaxy S10 (USA Unlocked version in my case) has a peculiar bug in the display. When a photo is fully opened in an app such as Gallery, the photo's saturation becomes muted and cold (even with the display set to vivid and warm). It's very apparent with skin tones. I first noticed this when comparing identical photos between my S10 and S9.
If you hit the app switcher, the minimized card displays the photo with the correct saturation. Maximizing the app, causes the image to immediately turn washed out and Muted. This is appears to be a system wide bug, as it shows up in Gallery, Instagram and other places. I could not get this to show up with a screen recorder, since it's the display changing the image. I recorded it with my camera, but it appears very subtle. In person it is very obvious. I don't know how many are affected by this bug, but I'm seeing others talk about it on forums. Appears to affect all galaxy S10 models.
For a temporary fix, you can enable the blue light filter and set it to the MINIMUM setting. This will display photos in the Gallery and other apps with the correct color saturation. Hopefully Samsung will address this with a software update!
Click to expand...
Click to collapse
Hi, I wanted to ask if you guys, have the same effect on your screen. It happens to me only when I'm in low light situations, and it's like, the dark colors, like, mix together with the color that was before in the place that is now the dark color. Only happens when I move any dark/black content on my phone, fast, or not to very fast, but no slow. The best way to see this effect is on dark mode, and on the status bar. Take a reference the white part of your brightness slider. Then, you moove up and down your statusbar, and if you can see it, you'll see like, the dark part of the brightnes slider, shrinks when it's moving (taking as a mark the thickness of the white part of the brightness slider). At first, I thought that this was like a system effect (animation), but then, I saw it on a photo, the same effect, so I think that my screen is defective. I upload a video in slow motion for a better look, and to understand me. Also, I forget to say, but in the video you won't notice it, but, the part that shrinks on the brightness slider, it color, slightly changes to a blueish color.
The video link:
https://drive.google.com/folderview?id=1wAu-xNoA0s9xQJkYNCqKJGT2A9bCttXa
haven't watched the video, but i think what you're describing is black smearing, it's an amoled thing becuase when black is onscreen pixels turn off
ffpp.2003 said:
Hi, I wanted to ask if you guys, have the same effect on your screen. It happens to me only when I'm in low light situations, and it's like, the dark colors, like, mix together with the color that was before in the place that is now the dark color. Only happens when I move any dark/black content on my phone, fast, or not to very fast, but no slow. The best way to see this effect is on dark mode, and on the status bar. Take a reference the white part of your brightness slider. Then, you moove up and down your statusbar, and if you can see it, you'll see like, the dark part of the brightnes slider, shrinks when it's moving (taking as a mark the thickness of the white part of the brightness slider). At first, I thought that this was like a system effect (animation), but then, I saw it on a photo, the same effect, so I think that my screen is defective. I upload a video in slow motion for a better look, and to understand me. Also, I forget to say, but in the video you won't notice it, but, the part that shrinks on the brightness slider, it color, slightly changes to a blueish color.
The video link:
https://drive.google.com/folderview?id=1wAu-xNoA0s9xQJkYNCqKJGT2A9bCttXa
Click to expand...
Click to collapse
I don't quite understand what do you mean. But for my mi 9 lite, when the screen is all black and only has a few places of lighted up areas, those pixels seems to last a bit longer after it had brightened up.
Idk if that's just what AMOLED does.
This is normal for OLED screens, i have seen same effect on Samsung Galaxy S3 - S9, Nexus and OnePlus phones. Black = off pixels. When they turn from black to something else, they need to turn on. This causes a delay, which leads to the blurry purple affect. It can be slightly annoying but the colors, saturation and contrast outweight the con's IMO, i dont see myself coming back to IPS.
It also happens to me in the Mi 9 Lite. It seems to be some technology used on the screen.
I'm considering picking one of these up (refurb) and I've never had a phone with notch or with cameras in the screen area. Front camera has been in the bezel area right above the screen. It looks like the two front cameras on this device are essentially embedded into the screen. Does that mean there is less display areas for notification icons or does the device allow for two rows of notification icons + time/battery display up top?
jazee said:
I'm considering picking one of these up (refurb) and I've never had a phone with notch or with cameras in the screen area. Front camera has been in the bezel area right above the screen. It looks like the two front cameras on this device are essentially embedded into the screen. Does that mean there is less display areas for notification icons or does the device allow for two rows of notification icons + time/battery display up top?
Click to expand...
Click to collapse
It may seen that it would be e problem, i've owned mine for about 4 months bow and its not an issue. The notification bar is thin but still very readable. If you want to customize the notification panel further for space, you'll be able to download (GoodLock and NiceLock depending on your region) to help with that.
S105G said:
It may seen that it would be e problem, i've owned mine for about 4 months bow and its not an issue. The notification bar is thin but still very readable. If you want to customize the notification panel further for space, you'll be able to download (GoodLock and NiceLock depending on your region) to help with that.
Click to expand...
Click to collapse
I took a peak at the descriptions of those apps and screen shots and can GoodLock actually modify the top notification status bar on top? I didn't think any app could control the look of that? Those apps seems to have quite a bit of overlap with built-in functions of latest Android 10 + One UI 2.x ? Still might give them a whirl.
SO I've had my S10 5G for about a week now. Right away, I tried the virtual bezel setting that basically black out the top of the screen next to the cameras. I didn't like the look. On my LG V30 the camera was in the bezel and the bezel was very thin so the screen display still appeared to take up most of the glass. With this setting on the Samsung, it's too heavy handed, blacks out a little too much height off the top of the screen so it looks odd with a very tall black bezel on top.
So far, I don't think the reduced space has caused my notification icon bar up top to get overloaded. What I ended up doing though was selecting a wallpaper that the top right corner is dark or almost black. It effectively "hides the cameras" while utilizing the full screen. Of course with apps open that aren't black on top, you see the large camera cutout but it's not really that distracting/terrible looking.
I like that Samsung got a little smarter on the S20 and has a very small single camera cutout in the middle of the screen now. Looks MUCH better. But still, it's only looks. Some may prefer having the dual front cameras, which I think is a nice trade off to having the larger camera cutout on the side instead of the a small single camera in the middle.