Database Develop

AMOLED Color: Which do you Prefer, Warmer Displays or Cooler Displays?

AMOLED Screens tend to differ from display to display, some users get displays presenting a warmer yellow color in presence of white while others get displays presenting a cooler bluish tint in presence of white.
Which presentation would you prefer in terms color appearances on AMOLED Displays (when using the Default Mode: Adaptive Display)? Warmer Displays or Cooler Displays?

I'll be honest when I say that 9300K "blue/cool" whites look more like true white to me, but the industry standards like sRGB, Rec. 709, etc. call for a 6500K "yellow/warm" white point and that leaves my hands tied when calibrating my displays for accuracy.
On that note, Android could use something like system-wide ICC profiles...

In Basic Mode, the display appears more yellow. However, in Adaptive Display, the display look "more cool."
Apart from these Modes, the displays are predisposed to a cool or warm tint, that makes the display appear either cool or warm (sometimes attributes to the pink or yellow tint in presence of whites).
NamelessFragger said:
I'll be honest when I say that 9300K "blue/cool" whites look more like true white to me, but the industry standards like sRGB, Rec. 709, etc. call for a 6500K "yellow/warm" white point and that leaves my hands tied when calibrating my displays for accuracy.
On that note, Android could use something like system-wide ICC profiles...
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I'll be honest. I've never taken the time to understand AMOLED Technology. It was more the active matrix part but I'll be the first to vote that I didn't.

arjun90 said:
In Basic Mode, the display appears more yellow. However, in Adaptive Display, the display look "more cool."
Apart from these Modes, the displays are predisposed to a cool or warm tint, that makes the display appear either cool or warm (sometimes attributes to the pink or yellow tint in presence of whites).
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I'm quite aware of the screen modes, but the white point color temperature and overall gamut (wider gamuts -> more saturation, deeper primaries) are only part of the whole color accuracy equation. The gamma is still far, far off from the 2.2 reference no matter what mode is used. Just open this up in your browser, then you'll wish you had some gamma adjustments somewhere on the Note 4. Maybe Lollipop will save us?
http://www.lagom.nl/lcd-test/gamma_calibration.php
Overall, though, I'd say the most important thing is consistency, which is why standards exist. However, a lot of white LED-lit LCDs and such are much closer to those 9300K blue-ish whites. Mixing those up with some warmer 6500K yellow-ish whites is really jarring, and I can speak from experience there. I'd say for personal use, it doesn't really matter which you use so long as all your displays look consistent next to each other.

I prefer a bluer tint, but only slightly. None of this Xperia Z3 blow your face off blue.
I haven't seen a yellowish screen for a while though. The Note 4 I have leans towards Red or Blue and most other phones i've used lean from red to blue. Mainly red though.

I dislike 6500K, I always have.. For me 6500k white isn't white, it's yellow.

rj3005 said:
I dislike 6500K, I always have.. For me 6500k white isn't white, it's yellow.
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been follwing this for quite time and yes I agree with your post. Being on the note 3 camp , it's the same **** on our end. Recently encho
has been implementing KCAL to aid with changing our color temperatures. More developers should make it a standard to include KCAL in snapdragons.

What "Screen color" Setting do you use on you V40

I switched from my LG V30 to a V40 about 3 day's ago.
I like the things they improved on the phone like the camera's and the reflectiveness of the screen / min brightness.
The thing that i dont like is the color reproduction i just cant get it right. Web gives the best colors but they are washed out compared to the V30 on Cinema. Moving to Cinema colors are blown out of proportion.
Manual settings have the same issue. Saturation neutral is still to much. One step lower is slightly washed out.
When i think i got red on the right value for pictures compared to the V30 a white screen looks red. If i fix that pictures look to green.
What settings do you guy's use?

Left it on 'Auto'. Never one to over-obsess with minor issues. The display is good enough to do colors on its own.
Sent from my LM-V405 using Tapatalk

Tried different ones Auto has been the best. It's a bit oversaturated but white point is good.

I see Auto setting still gives control over color temperature and RGB colors. You left those default? (neurtal and RGB maxed out?)
The cinema setting looks a bit more natural compared to Auto. (less overstaturation) And if i compare my picture to the real thing in real life the Cinema setting comes closer.

I believe I found better setting for myself to fix oversaturated display.
Expert mode, default color temperature, saturation and sharpness all the way down?

Found some extra information:
https://www.xda-developers.com/lg-v40-thinq-display-review/
Seems LG screwed up the Expert mode an almost all other color profiles. Googles does a better job using the same display.
Most accurate is the Web profile. Expert is not usable because color tempertature is above 7100K in all settings.
After web comes the Photo profile and after that Cinema. But that feels to overstaturated to me. While web lacks a bit of punsh. I guess that the UI was not made for the web mode and it looks understaturated because of that when using the web mode.
But for now i guess i will keep using web mode. I want to be able to see if the pictures that i take have the correct white balance and thats not possible in cinema mode. Faces look way to red. Same goes for photo but its less extreme.
Lets hope LG does a better job with the new android version later this year....
Out of the box the LG V40 ThinQ targets a cool and punchy color profile that is about 25% more saturated than our standard RGB color space. In the Auto and Expert profiles, it is possible to modify the display’s overall color temperature (albeit in a flawed manner) and to modify the relative reds, greens, and/or blues. The handset offers 6 other color profiles, and do provide profiles that accommodate the P3, Adobe RGB, and the sRGB color spaces. However, all three of the reference color profiles have a greenish-white point, and only the Web profile (which targets the sRGB color space) competently matches its target (though as seen in our Pixel 3 display analysis, LGD’s panels are completely capable of having near-perfect color accuracy with more adept calibration). Furthermore, none of the color profiles support Android’s color management, introduced in Android 8.0 Oreo, and even if it did, it wouldn’t mean much since almost no Android apps support it.
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Starting at the profile with the most important color space to target, the Web profile does an alright job at reproducing the sRGB color space. However, as shown on the color accuracy plots above, the white point has a noticeable color error shifting towards green, which is also observable on the plot chart in the yellow, cyan, and cyan-blue color mixtures. Pure reds are also slightly oversaturated, but not too-noticeably so. Overall, the profile has an average color error ΔE of 1.7 and a maximum color error ΔE of 3.1 at 100% cyan-blue and 25% yellow, which is mostly accurate and acceptable for hobbyist-level sRGB color work in photos and video.
The Cinema profile, however, is not as accurate and contains a lot more colors with higher color differences. Almost all colors, besides the gamut primaries (100% red/blue/green), are oversaturated, and there’s noticeable error all throughout the reds, red-yellows, yellows, and greens. The white point shared with the Web profile is also too green. The profile has an average color difference that is considered just-noticeable (ΔE = 2.3), with a maximum error ΔE of 4.2 all around the red-yellow-green region. I would like to reiterate that this profile is meant for content that targets the P3 color space, and everyday use of it will result in content colors that will appear oversaturated.
The Photo profile is also not too good, beginning with the display’s green emitter not capable of reaching the full chromaticity of the Adobe RGB green primary; however, the 100% green color difference is not noticeable. Below 100% green saturation, however, there is noticeable color error with a high color error ΔE of 5.0 at 25% green. Yellows also show a lot of noticeable errors, a few other just-noticeable color differences are scattered throughout the gamut. The profile has an overall average color error ΔE of 2.1 (which is technically mostly accurate), but the high color errors the profile contains makes it unsuitable for color-critical work in the Adobe RGB color space.
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[POLL] Are you affected by the "red tint at low brightness" issue

It has been reported - XDA, ZenTalk - by multiple Rog2 owners, that their displays show red discoloration under certain circumstances.
The two contributing factors seem to be screen refresh rate (higher freq -> more red tint) and brightness (lower brightness -> more red tint).
Steps to reproduce the issue:
1) Go to a dark room.
2) Add "Screen Frequency" toggle in the status bar, and lower the status bar to show the toggles;
3) Lower the brightness to 40%;
4) use the toggle to swap frequency from 60Hz, 90Hz and 120Hz.
If your unit is affected, the color of the dark grey areas on screen will increasingly shift toward red as you increase the refresh rate.
Is your phone showing these symptoms? Please share your experience by participating in the poll above.

Same here, hope its just SW issue and will be fix on future updates ?

Yep, I find it most annoying when i'm in a dark room and viewing images or talking over video whatsapp, the pics/vid colours are really dark and reddened, especially skin tones...

to all who answer the poll, pls take photos from the display with another phone and tell us their varriant
specially those who said no!

it seems like my phone doesnt have 40% brightness rofl.
it goes from 39 to 41.
but i dont have that issue with under 40% anyway..

Just a quick question, has anyone tried with an actual grey background? I get the same effect on the screen when the top bar is pulled down but if i look at a grey color palette i do not have this issue. I think its just a issue with the color overlay that asus has set on the top and bottom bar.

Yeah, the red tint is there under 30% brightness at 90 and 120hz, but not as intense as in the picture ?

Only noticeable with nightlight on for me. At lower than lowest brightness controlled by app.

I've only noticed it with the pull down quick menu. but TBH im 50% or above brightness anyways. You can tell the oled panel is red biased - something thats common in industry with oled manufacturers. Samsung went through a yellow and blue bias, Sony had a red tint issue.. Doesnt really phase me as the phone is otherwise sublime

Look, I am telling you, all the units have the same effect.
Those who voted no they are liers that are practising fanboyism or they don't have the phone at first place.
Anyway, if you cannot get along with that then I advise you to return it/sell it and get a device from another brand.

change Theme will help maybe other dark theme.
because white theme not that effect
if anybody vote No, I think they don't use dark theme with orange color.

Yeah there is no lottery here as all displays are affected. Just people in denial or people with the wrong settings who say they have no red tint

not sure if it's just me, but mine seems to have more red tint when the refresh rate is set to 90hz compared to 120, and no red tint at all in 60hz

Ccion said:
change Theme will help maybe other dark theme.
because white theme not that effect
if anybody vote No, I think they don't use dark theme with orange color.
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i dont have it. tried all. dark theme and white theme. Not getting any red tint.

weyrulez said:
i dont have it. tried all. dark theme and white theme. Not getting any red tint.
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Would you mind if you can take a screenshot with low and high brithness just to show how it looks as you saying you are not affected by the red tint would be greatly appreciated

ased10 said:
Would you mind if you can take a screenshot with low and high brithness just to show how it looks as you saying you are not affected by the red tint would be greatly appreciated
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Here it is.

weyrulez said:
Here it is.
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You have to take photos of your screen with another phone or camera.
Screenshots are grabbed directly from the frame buffer of the phone, i.e. they show what the phone intends to display, not what it actually looks like on screen.

So in my device its like this,
at 0-30% brightness with dark mode on
60hz - 40% red tint, 90hz - 10% red tint, 120hz - 30% red tint on grey backgrounds .
at 40% brightness and after the red tint goes away.
so weirdly there is less red tint in 90hz mode.

People who have affected devices, can you highlight which variant of ROG2 you have?
For me:
Tint : No
Variant : Tencent
P.s: i believe that the indian variant is mostly being reported to have this issue.

Thugsin313 said:
People who have affected devices, can you highlight which variant of ROG2 you have?
For me:
Tint : No
Variant : Tencent
P.s: i believe that the indian variant is mostly being reported to have this issue.
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Mine is indian variant and yes its being reported in mostly indian variants.

P30 Pro display's color balance leans too red/pink and desaturated. Calibration?

There are a lot of posts and review mentioning this problem about the camera, photos, and videos, but it's not just the output coming from the lens: it's the entire display.
It's not just that it's pinker than other devices: when you look at photos of humans or things you know were supposed to be yellower, it's noticeable and looks wrong, even without another screen to reference. Humans look especially piggy-pink. Sand looks pink. Wood looks pink.
Yes, it's possible to adjust color balance from the Settings menu, but if I adjust for reds, the whites become off-balanced: too yellow-green.
The color temperature wheel also does nothing for a separate issue: contrast and saturation. In Normal mode, it's too muted. Meanwhile, "Vivid" mode comically oversaturates. Compared to a Pixel 2 XL and Pixel 4 XL (and other screens, mobile and desktop), colors (in Normal) are more muted than expected. Parts of images that should be charteuse or neon are instead just nearly-pastel yellow-green. Darks and blacks are nearly greyish.
Can anything be done to calibrate the screen, via root, apps, or otherwise?

Question Display problem

I'm using a super amoled display at low brightness I can notice Shades of dark gray aren't uniform. This is visible in darker environments (like in the bedroom at night).
This is most visible on Reddit dark mode. I can see it on Spotify if I look hard. Should I need to replace it or it's a problem with every super amoled display?