Database Users

Colour Correction mods/kernels

Hi all,
I've been reading about how the Nexus 7's display is actually quite good, but that it's been very poorly factory calibrated. Is anyone working on a kernel or mod to address this and/or allow us to tune the display to our preferences? Like many others, I find it's great for text, but rather washed out and desaturated for photos and other color-dependent uses. I'm hoping something like Voodoo Color will be available soon.
Still a great device, but this is #1 on my wishlist at the moment!

Same here. I love everything about this tablet except for the color calibration. I want to get my colors a little more over saturated (ala G-Nex style). Pictures don't look as vivid as they should, and even small stuff like the color of the battery gauge seems off. On my N7 display at least, it seems like it's greens, yellows and blues are washed out.

Aye, its done to budget tablets to make them look brighter, shame they had to do it to the nexus, its a awesome screen though. Der kernel (trinity) is looking into it (they had a gnex colour mod)
Sent from my Nexus 7 using xda app-developers app

How would that work at the kernel level?

[VIDEO] HTC One vs Galaxy S4 vs Optimus G Pro Direct Sunlight Comparison

I figured some people might want to see what these devices look like when viewed outside in the sunlight.
You guys can draw your own conclusions. I'll remain silent.
EDIT:
Here's a little redo:
LG Optimus G Pro still gets the short end of the stick here. The video didn't start playing. It is my daily use phone so please don't be outraged and say I'm trying to jack the results.
I love the phone, but the screen's sensitivity falls short IMO when compared to the other ones here. Not a deal breaker. Just takes a little bit more getting use to.

chrisngrod said:
I figured some people might want to see what these devices look like when viewed outside in the sunlight.
You guys can draw your own conclusions. I'll remain silent.
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htc is winner

chrisngrod said:
I figured some people might want to see what these devices look like when viewed outside in the sunlight.
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Click to collapse
The SGS4 needs to be on auto-brightness to achieve its maximum brightness levels. Setting it to "max" manually results in 34% less brightness than using it in bright light in auto mode. It's kind of odd but here's the reasoning...
OLED displays are generally not as bright as the brightest LCD displays. There are two reasons for this: first, while OLED power efficiency has been steadily improving they are not yet as power efficient as the best LCDs. Second: there is a marketing obsession for producing ultra thin and light weight Smartphones, which sacrifices much needed battery power. Since the display often uses 50 percent or more of the total Smartphone power, various display power management schemes are frequently used. The Galaxy S4 uses one innovative approach to overcome this – when Automatic Brightness is turned on, the Peak Brightness becomes significantly brighter in high ambient lighting than is possible with Manual Brightness, up to as high as 475 cd/m2, which is 34 percent higher than is possible with Manual Brightness. This is done so that users can’t permanently set the brightness to very high values, which would run down the battery quickly​.http://www.displaymate.com/Galaxy_S4_ShootOut_1.htm

^This is the kind of productive information that allows for better videos.
I will rerun it as I did verify that the GS4 is dimmer under the conditions explained above.
My Note 2 is running CM10.1 so this could be causing different results. It does not behave in the same manner. Auto brightness = 100% manual brightness.
EDIT: I swore I could replicate this under a fluorescent soft box before, but now I can't. Really want to try this out, and it's dark now.

chrisngrod said:
My Note 2 is running CM10.1 so this could be causing different results. It does not behave in the same manner. Auto brightness = 100% manual brightness.
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It's new on the SGS4. Here's another "feature" that impacts max brightness. Auto Tone caps max brightness at 375 cd/m2. Adapt Display also affects brightness but it's not linear so the impact is hard to measure. Between these three settings all the reviews have been screwed up in terms of brightness evaluation with wide swings in their results because the reviewers didn't know their impact.
The Samsung Galaxy S4's Full HD SuperAMOLED screen is the best AMOLED display we've seen on a smartphone. However if you're noticing subpar brightness some of the time, there's an option in "Display settings" you might want to take a look at. By default, the Galaxy S4 and many other Samsung devices ship with "Auto adjust display tone" turned on. You can find it under Settings > My device > Display > More settings. When enabled, it tweaks the display brightness based on the on-screen image to avoid burning through an excessive amount of juice. Most of the time you might not notice this, but there's an easy way to see its effects. When there's a lot of white space on-screen, "Auto adjust screen tone" will dim the display slightly to save power. The effect is subtle, but jump between a website like Google in the web browser and your home screen and you'll probably notice that after a split second the page is dimmed slightly. That's good if you want to save power, bad if you want to take full advantage of that big, bright screen. So if you favor battery life, you can leave it turned on - after all, it's designed to save power. But to get the brightest possible image on your Galaxy S4, you may well want to turn this setting off.​Samsung Adapt Display: The Galaxy S4 "learns" what you are viewing and adjusts the display's brightness accordingly. If the phone senses you are reading an article, for example, it will illuminate from a more muted brightness.​

I do believe that I mentioned the auto tone was disabled in which it was.
Under the notes it'll be edited to reflect this information and a link to the test WITH the GS4 in auto mode. Heck the next one will have all of them in auto.
The LG Optimus G Pro is similar to the iPhone in the sense that the manual brightness level impacts the max auto brightness level.

chrisngrod said:
You guys can draw your own conclusions.
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We here http://forum.xda-developers.com/showthread.php?t=2288003 think that you intentionally set the brightness on G Pro to 76% instead of full brightness on HTC One. That's why One won this test. We think that you might want to retest them again, and set them all to 100% to make the honest competition so to stop spreading FUD

Billy Madison said:
We here http://forum.xda-developers.com/showthread.php?t=2288003 think that you intentionally set the brightness on G Pro to 76% instead of full brightness on HTC One. That's why One won this test. We think that you might want to retest them again, and set them all to 100% to make the honest competition so to stop spreading FUD
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He's not trying to cheat the GPRO look it up on review site they will confirm the ONE has a better and brighter screen it's the best screen out currently on a smartphone.

nullkill said:
He's not trying to cheat the GPRO look it up on review site
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Yes, sir, I did exactly it, review you mentioned states
LG’s IPS display technology is simply the best in the biz.
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Period
nullkill said:
they will confirm the ONE has a better and brighter screen it's the best screen out currently on a smartphone.
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And stop spreading FUD that One's display is top of the pop and best in industry since G Pro is toppest one. It's brighter when set to 100% setting, more vivid, more readable

Billy Madison said:
And stop spreading FUD that One's display is top of the pop and best in industry since G Pro is toppest one. It's brighter when set to 100% setting, more vivid, more readable
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We'll see if Anandtech eventually releases a review of the phone. Nothing, and absolutely nothing beats the depth of reviews on Anandtech. And I also don't get you coming to this forum specifically to look for posts saying your phone isn't as good in this or that feature etc etc. An OPINION was provided on Android Central, fact based on actual measurements are missing for both sides, so everyone just chill out.

ArmedandDangerous said:
An OPINION was provided on Android Central, fact based on actual measurements are missing for both sides, so everyone just chill out.
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You don't read what is written? If I, say, set brightness level on HTC One to 10% and at the same time set G Pro to 100% and then compare them under the sun saying "See, HTC One just doesn't stand up to greatest G pro cause it's dim" would you remain silent? Or you go "Stop, but One is only set to 10%, how do you compare them so wrong?" I think the second
Yes, antiglare coating on G Pro is too bad but in the case of video testing it doesn't matter , sun doesn't reflect from this particular angle of view in the video

[QUOTE=ArmedandDangerous; And I also don't get you coming to this forum specifically to look for posts saying your phone isn't as good in this or that feature etc etc.
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Stop this childish playground attitude. People can post wherever they like, you do not own this space.
This guy has every right to post here especially if it is a comparison thread, and for the sakes of balance we need challenging input....regardless of whether he/she posts things that are subjective/objective.

This is what I posted on the other thread:
If I wanted to cheat on purpose... I don't think I would have pulled the notification bars down. I did so to check however it was very bright and the G Pro was the furthest away from me. No one probably understands how awkward it is to mount a camera while staying out of view of the frame (the camera is pointing straight down), and attempt to do this at your apartment.
It was also noted in earlier in the thread that the GS4 NEEDS to be in auto mode to achieve full brightness. I've left in the notes that this video has issues. It will most likely be pulled when the new one is made.
You know why it was set at 76%? It's because the LG Optimus G Pro is the most sensitive out of the bunch and by accident it was lowered. I already stated I'm no expert.
Feel free to call be stupid, but the LG Optimus G Pro is actually my daily use phone. So I would love for it to win everything.
It's called I was sweating my balls off and did it unintentionally.
Either way you still watched my video and it was still monetized for the people who want to act like an ass. I state that I'm not an expert, and I ask for input.
I would have redone it yesterday, but it wasn't very sunny out.
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HTC one looks the best here, no contest.
TapaTolkien

I've used the LG displays and they are no where near as good as the HTC One display. Review sites can say whatever they like, they are mostly biased and or paid anyway, so it doesn't count. I've used and owned almost all the top spec android phones out in the last 3 years, and size withstanding, for quality and brightness, nothing beats the One screen. Nothing.

biffsmash said:
I've used the LG displays and they are no where near as good as the HTC One display. Review sites can say whatever they like, they are mostly biased and or paid anyway, so it doesn't count. I've used and owned almost all the top spec android phones out in the last 3 years
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What top LG's phones have you used in last 3 years?

chrisngrod said:
If I wanted to cheat on purpose.
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It's great that you spend your own time producing videos that show how devices perform in the "real world" which objective reviews don't often do. AnandTech and GSMArena have posted corrections at times so testing isn't always perfect. People that only want their device to "win" will only be satisfied if it does and will diss you otherwise. Don't let it get you down.

schrickm5 said:
ArmedandDangerous; And I also don't get you coming to this forum specifically to look for posts saying your phone isn't as good in this or that feature etc etc.
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Stop this childish playground attitude. People can post wherever they like said:
It isn't constructive nor "challenging input" when he goes on the offensive from his first post when the OP has done nothing to deserve. If you questiopn his testing methodology, say it, not spew hate and go on and on about "spreading FUD". Nobody cares to read negative feedback, nor should they be encouraged.
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Here's a little redo:
LG Optimus G Pro still gets the short end of the stick here. The video didn't start playing. It is my daily use phone so please don't be outraged and say I'm trying to jack the results.
I love the phone, but the screen's sensitivity falls short IMO when compared to the other ones here. Not a deal breaker. Just takes a little bit more getting use to.

chrisngrod said:
Here's a little redo:
LG Optimus G Pro still gets the short end of the stick here. The video didn't start playing.
Click to expand...
Click to collapse
Yeah, we noticed, but it's really not an issue to raise a rant. And nevertheless I think the sensitivity of touchscreen in G Pro is very good compared to older phones.
Well I might need some help. Could you compare your devices on the point of colors reproduction? Read this topic I can't prove them that G Pro has not got perfect display. Could you compare your HTC One with G Pro and tell is G Pro better or HTC One is better and more accurately calibrated? And not at 100% brightness level of course but at daily office 50% brightness setting

Color Saturation & Accuracy.

Excuse my ignorance, but how great of a screen is the N7 supposed to be in comparison to some of the higher end smartphones out there in terms of color reproduction and saturation?
I have the HTC One, and side by side comparisons of the same image makes the N7 look washed out and bland.

S8B said:
Excuse my ignorance, but how great of a screen is the N7 supposed to be in comparison to some of the higher end smartphones out there in terms of color reproduction and saturation?
I have the HTC One, and side by side comparisons of the same image makes the N7 look washed out and bland.
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That remains to be seen until LaptopMag or Displaymate or someone with the tools can accurately measure it, but reviews so far point out that both brightness and colors are very good on the device.

Be cool if ISF calibration could be implemented into tablets & phones.

Berties123 said:
Be cool if ISF calibration could be implemented into tablets & phones.
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Didnt the N4 have some color correction tuneable built into the kernel? Since the N7 mk2 is on a similar SOC, I was hoping for the same.
Sent from my Nexus 7

Artood2s said:
Didnt the N4 have some color correction tuneable built into the kernel? Since the N7 mk2 is on a similar SOC, I was hoping for the same.
Sent from my Nexus 7
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The N4 color out of the box was terrible. Not to long after launch a few devs implemented a much better solution baked into their kernels. I would expect the same here. The N4 gamma and color is brilliant now
Sent from the Nodes of Ranvier

It's pretty good on par with iPad 4 according to Anandtech and Apple is known for having good calibration. But then again, just a matter of time when we can calibrate it ourselve like the Nexus 4.

S8B said:
Excuse my ignorance, but how great of a screen is the N7 supposed to be in comparison to some of the higher end smartphones out there in terms of color reproduction and saturation?
I have the HTC One, and side by side comparisons of the same image makes the N7 look washed out and bland.
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I agree with you completely. I have an HTC One X and immediately thought the 2013 N7 looked pale in comparison. Hopefully there's some resolution in the future.

I have a Note 8 and a Nexus 7.
On colors with green elements displayed on the Nexus 7, the entire photo takes on a distinct greenish hue. The black level on the N7 is not very dark, either.
I set up both tablets on the floor, mounted a camera on a tripod over them and took photos.
Attached are some detail shots of flowers and our dog showing the green wash and the bright blacks. I certainly hope that this is something which can be addressed in software.
http://s13.postimg.org/j1wxfi1d3/1_to_1_detail_nexus_7_top_note_8_bottom.jpg
(fullsize image; nex 7 images at top, note 8 at bottom)
thumbnail preview attached.
I would definitely want to look at the N7 side by side with something else at the shop before buying one, or else be ready to return it if you have trouble with the color accuracy once you get one home.
Not everyone will care, of course.
But what I've seen in reviews is that brightness is good but color is not very accurate, not that both are good.

roustabout,
thank you for that.
that proves my point from other threads, the N7 screen is not properly calibrated yet again.

Overall, it seems pretty good to me. I compared it to my Spyder calibrated IPS monitor and the colors were fairly close.

eep2378 said:
The N4 color out of the box was terrible. Not to long after launch a few devs implemented a much better solution baked into their kernels. I would expect the same here. The N4 gamma and color is brilliant now
Sent from the Nodes of Ranvier
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They managed to bake it because LG left some display colors related things in the kernel. That said I would like to see if asus made the same thing for this device. (hopefully)

The view angles and color are excellent on it. Much better than the first nexus 7 and a million times better than the nexus 4.
Sent from my Nexus 7 using xda premium

blackhand1001 said:
The view angles and color are excellent on it. Much better than the first nexus 7 and a million times better than the nexus 4.
Sent from my Nexus 7 using xda premium
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That's what I've found: it looks a lot better than my Nexus 7 2012. I think it gets slammed a lot for being "bland" since most of the smartphones like to oversaturate their displays (I'm looking at you, Samsung). I have a really good IPS monitor for my computer, and it seems to fit in quite well with it, and it makes my Galaxy S4 screen look like a colorful kid's toy.

zaclimon said:
They managed to bake it because LG left some display colors related things in the kernel. That said I would like to see if asus made the same thing for this device. (hopefully)
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Asus provides a screen calibration in the setting on the Asus Padfone 2 & Infinity (Stock). So its likely possible.

MrPhilo said:
Asus provides a screen calibration in the setting on the Asus Padfone 2 & Infinity (Stock). So its likely possible.
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Pretty sure the issue with the first generation nexus 7 was that nvidia didn't provide a way to set these things. Qualcomm I believe does so the odds are pretty good. I personally like the stock calibration though. The first time I think its been good on a nexus device. The panel itself is much better than the nexus 10 and nexus 4 as well. Much wider view angles.

MrPhilo said:
Asus provides a screen calibration in the setting on the Asus Padfone 2 & Infinity (Stock). So its likely possible.
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blackhand1001 said:
Pretty sure the issue with the first generation nexus 7 was that nvidia didn't provide a way to set these things. Qualcomm I believe does so the odds are pretty good. I personally like the stock calibration though. The first time I think its been good on a nexus device. The panel itself is much better than the nexus 10 and nexus 4 as well. Much wider view angles.
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Ok well I just hope it was some fail from nvidia's part over here. I just imagine what would be the colors because it seems when I listen to this, it's like a new display has been made. XD

Why so bad calibration?

Sony, why?
10K Temperature (12K hi-tech mail)
Bad gamut accuracy
http://www.phonearena.com/showimage.php?m=Benchmarks.Values&id=49978&v=default
https://hi-tech.imgsmail.ru/hitech_...84x-/i/ff/f5/a13733c67e5523f054fff244ac95.jpg
Bad Delta E
Delta E grayscale 8.96
http://www.phonearena.com/showimage.php?m=Benchmarks.Values&id=49980&v=default
z3
https://hi-tech.imgsmail.ru/hitech_...84x-/i/db/99/32847e83963c279457ed417f5ee5.jpg
need (alpha)
https://hi-tech.imgsmail.ru/hitech_...84x-/i/19/3c/548c594110e662ebf699ab0e5742.jpg
Delta E rgbcmy 6.03 (7,91 hi-tech mail)
Why? For what?

Have you tried turning off x-reality and tweaking white balance?

degraaff said:
Have you tried turning off x-reality and tweaking white balance?
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I want to use a normal smartphone out of the box
xreality does not help
R=255, G=190, B=0
improves the situation but not completely
http://hi-tech.mail.ru/review/sony_xperia_z3_compact.html

sonyfan12 said:
R=255, G=190, B=0
improves the situation but not completely
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Those are extreme adjustments, red all the way up and green at 190.

Why? To increase the brightness without increasing the power consumption
Sent from my Xperia Z2

Jiyeon90 said:
Why? To increase the brightness without increasing the power consumption
Sent from my Xperia Z2
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AFAIK, Sony's white balance option makes the display look darker the heavier you adjust it, at least that's how it is for my Xperia Z2 Tablet.

http://forum.xda-developers.com/general/general/best-screen-reviewers-best-screen-t2911814

Various reviews have indicated that the official word from Sony is that the 10k is intentional because that tested best with focus groups (display was assessed as "brighter" and "more vivid"). Given the way Triluminos displays work (the backlight is blue, not white), the brightness increase at high color temps may be more than just perceptual.
Keep in mind that the average smartphone consumer couldn't explain color temperature if their life depended on it. They look at the device next to others at a brick-and-mortar wireless carrier store or kiosk and the "brightest" one (regardless of how inaccurate) will usually be selected as having the "best" display. At least Sony provides a way to get back to something a little more sane (without having to root the phone).

kopsis said:
Various reviews have indicated that the official word from Sony is that the 10k is intentional because that tested best with focus groups (display was assessed as "brighter" and "more vivid"). Given the way Triluminos displays work (the backlight is blue, not white), the brightness increase at high color temps may be more than just perceptual.
Keep in mind that the average smartphone consumer couldn't explain color temperature if their life depended on it. They look at the device next to others at a brick-and-mortar wireless carrier store or kiosk and the "brightest" one (regardless of how inaccurate) will usually be selected as having the "best" display. At least Sony provides a way to get back to something a little more sane (without having to root the phone).
Click to expand...
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The vast majority of people don't like oversaturation and distortion. I don't know what crazy focus groups have Sony.
Apple, Samsung, HTC, LG etc every year aspire to natural and correct color. And I agree with them. Sony need to dismiss his crazy focus group.
Although, I think there was no focus groups, they just wanted to increase the brightness of the screen and at the same time to probe the market, how color reproduction is important to people

When you raise all value too high, brightness will be decrease. I've never change Blue, a bit Green, mainly Red.

Jiyeon90 said:
Why? To increase the brightness without increasing the power consumption
Sent from my Xperia Z2
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It would be better if they offered various presets in the settings. This one could be called "Energy efficient superbright" (or some other snazzy marketing name), with the ability to also select a preset called "accurate".

sonyfan12 said:
The vast majority of people don't like oversaturation and distortion.
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Click to collapse
Got a study to back that up? In a Leichtman Research Group study a few years ago, 18% of HDTV owners couldn't tell the difference between SD and HD. So I find it hard to believe that more than 50% of smartphone owners have any clue about color accuracy.
Case in point, walk into any big box consumer electronics store and look at the TVs on display. Nearly all of them have the brightness and saturation cranked up ridiculously high. Why? Because it sells TVs. At a glance, everything seems much more "vivid" than the shopper's current TV and that creates incentive to buy.
Apple, Samsung, HTC, LG etc every year aspire to natural and correct color.
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Yes, and that's admirable. I'm not defending Sony's approach. You asked "why?" and I provided the answer. Sony is struggling in the worldwide smartphone market compared to the OEMs you listed, so you have to expect them to try some "different" approaches. Yes, it would be nice if they provided a settings preset to get back to a 6500K calibration. Perhaps we need a thread where people with calibration hardware can post their properly calibrated settings?

kopsis said:
Case in point, walk into any big box consumer electronics store and look at the TVs on display. Nearly all of them have the brightness and saturation cranked up ridiculously high. Why? Because it sells TVs. At a glance, everything seems much more "vivid" than the shopper's current TV and that creates incentive to buy.
Click to expand...
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Same with smartphone cameras, often the colors seem to be way off because it looks more vivid and that's what people want.
See Z3C vs S5 here for example.

I spent a lot of money for a crap diaplay....reds never look red..they always look pink...waahedout colours...baaaaad camera pics..they are lifeless...i v sold this crap phone with a loss of 300k...pathetic...i was a die hard fan of sony since sonyericsson t610...i have used just sony phone.never ever used any other brand coz of sony,s camera and outstanding colour caliberation,display and awesome bravia engine....now after a loss of 300k..i am very much disaappointed...why 10K colour temperature...i cant understand this at all...but still i love xperia brandand hoping that z4 compact will b a good one

Shrug. Phone is fine for me, but to each their own I guess.
Sent from my D5803 using XDA Free mobile app

Looks good to me with green at 64-65

ffaaiissaall said:
I spent a lot of money for a crap diaplay....reds never look red..they always look pink...waahedout colours...baaaaad camera pics..they are lifeless...i v sold this crap phone with a loss of 300k...pathetic...i was a die hard fan of sony since sonyericsson t610...i have used just sony phone.never ever used any other brand coz of sony,s camera and outstanding colour caliberation,display and awesome bravia engine....now after a loss of 300k..i am very much disaappointed...why 10K colour temperature...i cant understand this at all...but still i love xperia brandand hoping that z4 compact will b a good one
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Is it that bad because I'am really interested in buying this phone. Please give me more details.

It would be bad if you had to root to change white balance, however Sony have thoughtfully provided a way to do it via settings that's fine.
There are other threads with suggested settings, and I've found a moderate change of R 40 G 72 to be perfectly satisfactory.
This is a non issue thread.

techguyone said:
It would be bad if you had to root to change white balance, however Sony have thoughtfully provided a way to do it via settings that's fine.
There are other threads with suggested settings, and I've found a moderate change of R 40 G 72 to be perfectly satisfactory.
This is a non issue thread.
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Except as has been established for a long time now, this option *doesn't* allow you to change the white balance, regardless of what Sony decided to call it for marketing reasons. It just overlays an RGB color filter over your screen - which is why it darkens the screen when you set sliders to max. Setting white point shouldn't have this effect at all. It doesn't even express color temperature options properly. Color accuracy isn't improved.
What you're seeing is only a lazy approximation of white balance adjustment, so yes this is very much a live issue.

As I said, my moderate change of +40 R & + 72 G *fixed* any issues I had, can't say I've noticed my screen going darker. Clearly if you're going to slam all the sliders over to MAX then it'll suffer. The point I'm making is that if you can adjust the white balance effectively for a small adjustment, Sony didn't get it that wrong, and even if they did, they provided a method to adjust it back to *correctiveness* in any case.
Now.
If the colour was obviously bad out of the box, and there was no way at all to correct it using any method, or you needed to root to fix it, then that WOULD have been an issue and I'd have been butt hurt too, however as this isn't the case I'm not, and it's a non issue.

Display calibration in S7 Edge SM-G335F?

Dear friends,
I'm going to buy a Galaxy S7 Edge SM-G335F soon. Do you know if there's some way to adjust the display calibration? I looked custom kernels, but they don't come currently with color adjustment.
Thank you very much.

Bump.

If by display calibration you mean the screen modes, you can find them at settings>display>screen modes.
From there you can pick the type of saturation and colour accuracy that you want. Basic would be the most accurate mode, while cinema ups the saturation to give you more pleasing images.
I hoped I help, though you're being awfully vague by "display calibration".

iSaitama said:
If by display calibration you mean the screen modes, you can find them at settings>display>screen modes.
From there you can pick the type of saturation and colour accuracy that you want. Basic would be the most accurate mode, while cinema ups the saturation to give you more pleasing images.
I hoped I help, though you're being awfully vague by "display calibration".
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Thank you for your response. ☺
Unfortunately I'm searching for a way to modify those predefined modes. Using root, Xposed, custom ROM of whatever. Like we can do in another devices with custom kernels and KCAL. Do you know something about that?

Raijin said:
Thank you for your response. ☺
Unfortunately I'm searching for a way to modify those predefined modes. Using root, Xposed, custom ROM of whatever. Like we can do in another devices with custom kernels and KCAL. Do you know something about that?
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I'm sure I've tried to do that using Synapse before, but I'm really sorry I can't help you in full detail. However, I do know that the Jesse, Superman, and Prometheus kernels all work with Synapse, so you might want to start there.

iSaitama said:
I'm sure I've tried to do that using Synapse before, but I'm really sorry I can't help you in full detail. However, I do know that the Jesse, Superman, and Prometheus kernels all work with Synapse, so you might want to start there.
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That's a good beginning point! I'm really grateful with you for it.
I'll try to post in the kernel threads to see if they know more.
Thank you again, that's all I needed. ☺

Raijin said:
That's a good beginning point! I'm really grateful with you for it.
I'll try to post in the kernel threads to see if they know more.
Thank you again, that's all I needed. ☺
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Wew, you make me feel helpful for once.
Hope you find what you need!

Generally speaking there is absolutely no need to calibrate SGS7 or SGS7E as their displays are pre-calibrated. They have full 3D LUT and you can easily switch between sRGB and aRGB modes in "Display settings" - basic and amoled photo modes respectively. And I can assure you - they are damn good. I checked with HCFR and both these modes are stunningly good out of box, like nothing I have ever seen before. If you don't trust me, just look at this: http://www.displaymate.com/Galaxy_S7_ShootOut_1.htm .

corckie said:
Generally speaking there is absolutely no need to calibrate SGS7 or SGS7E as their displays are pre-calibrated. They have full 3D LUT and you can easily switch between sRGB and aRGB modes in "Display settings" - basic and amoled photo modes respectively. And I can assure you - they are damn good. I checked with HCFR and both these modes are stunningly good out of box, like nothing I have ever seen before. If you don't trust me, just look at this: http://www.displaymate.com/Galaxy_S7_ShootOut_1.htm .
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Click to collapse
Hehe, I trust you ☺ , that display is the best currently.
My brother has an S7 and its display seems to have the white point calibrated to ~7000K in Adaptative and Cinema modes, and it has a questionable green tint. The iPhone 6 of a friend looks A LOT cooler next to it.
According to DisplayMate, the S7s they analysed had the calibration of Cinema at 7445K, Photo at 6512K and Basic at 6480K while their iPhones 6 and 6 Plus are at 7241-7348K. It's rumored that DisplayMate and another reviewers get cherrypicked devices by manufacturers.
The AMOLED display calibration varies a lot from unit to unit.
I found yesterday that NotebookCheck.net posted the CalMAN reports in their analysis of the different screen modes of S7E. In Basic, they get 6286K, in Photo 6321K, and in Cinema, 7032K. That's a lot different to DisplayMate and their S7 calibrated at 7445K, and those values seem to be like the ones of my brother's S7. In their iPhone 6s Plus, they get 7280K. I think NotebookCheck.net doesn't get cheerypicked devices.
So this leads to the conclusion that all AMOLED panels come with different calibration. This leads to perfectly calibrated devices, like yours (congratulations, sometimes people exchange their devices repeated times to get one perfect), and poorly calibrated devices, like my brother's. I need to go to a phone store to compare the S7 of my brother with theirs.
Thank you for your help! ☺

Raijin said:
Hehe, I trust you , that display is the best currently.
My brother has an S7 and its display seems to have the white point calibrated to ~7000K in Adaptative and Cinema modes, and it has a questionable green tint. The iPhone 6 of a friend looks A LOT cooler next to it.
According to DisplayMate, the S7s they analysed had the calibration of Cinema at 7445K, Photo at 6512K and Basic at 6480K while their iPhones 6 and 6 Plus are at 7241-7348K. It's rumored that DisplayMate and another reviewers get cherrypicked devices by manufacturers.
The AMOLED display calibration varies a lot from unit to unit.
I found yesterday that NotebookCheck.net posted the CalMAN reports in their analysis of the different screen modes of S7E. In Basic, they get 6286K, in Photo 6321K, and in Cinema, 7032K. That's a lot different to DisplayMate and their S7 calibrated at 7445K, and those values seem to be like the ones of my brother's S7. In their iPhone 6s Plus, they get 7280K. I think NotebookCheck.net doesn't get cheerypicked devices.
So this leads to the conclusion that all AMOLED panels come with different calibration. This leads to perfectly calibrated devices, like yours (congratulations, sometimes people exchange their devices repeated times to get one perfect), and poorly calibrated devices, like my brother's. I need to go to a phone store to compare the S7 of my brother with theirs.
Thank you for your help!
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Click to collapse
You could try Screen Balance from the App Store. It works quite well but you'll have to get the paid version to access all settings.
I got it on mine and use it sometimes.

So this leads to the conclusion that all AMOLED panels come with different calibration. This leads to perfectly calibrated devices, like yours (congratulations, sometimes people exchange their devices repeated times to get one perfect), and poorly calibrated devices, like my brother's. I need to go to a phone store to compare the S7 of my brother with theirs.
Click to expand...
Click to collapse
Mine is around 6400K and RGBCMY are spot on with highest dE of 1.5% which I consider unnoticeable. For straight out of box device these are fabulous results. I do lots of photography and one thing I find annoying is that Android has no support for wide gamut nor file embeded color profiles, not to mention any other content. Apple has much easier job, they control hardware and software, so their newest iPads with DCI-P3 can easily handle colors.
Still - kuods for Samsung for delivering class leading displays.

Raijin said:
Dear friends,
I'm going to buy a Galaxy S7 Edge SM-G335F soon. Do you know if there's some way to adjust the display calibration? I looked custom kernels, but they don't come currently with color adjustment.
Thank you very much.
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Click to collapse
Plz go to setting then accessibility then there is color Calibrator