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Being a home theater enthusiast and calibrating every hdtv I've got me thinking if its possible on android too. And I don't mean the sensitivity or the like. I mean video as in color and brightness. I watch alot of videos and to my experience both are off. Brightness is way too low you can't make out details in dark scenes. Some would say the color is oversaturated... it isn't. Brightness is too low making colors seem this way. A few notches in the brightness scale should take care of it. Anyone know if its possible?
Sent from my SPH-D700 using XDA App
Try manually setting your brightness settings in SETTINGS->DISPLAY->BRIGHTNESS?
I'm a professional video editor and I'm not THAT crazy about having perfect settings for watching video on my phone. Why? I'm usually not in ideal viewing conditions to watch an internet quality video for a few moments on a 4 inch screen with a dinky mono speaker.
Although, I know a few Apple Engineers in Cupertino that are REAL geeks that put bars and tone on their iPhone to just show off.
RushAOZ said:
Being a home theater enthusiast and calibrating every hdtv I've got me thinking if its possible on android too. And I don't mean the sensitivity or the like. I mean video as in color and brightness. I watch alot of videos and to my experience both are off. Brightness is way too low you can't make out details in dark scenes. Some would say the color is oversaturated... it isn't. Brightness is too low making colors seem this way. A few notches in the brightness scale should take care of it. Anyone know if its possible?
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
http://project-voodoo.org/color
It's in vision kernel.
I was thinking of having my Windows desktop show on my Epic's screen using a VNC client. Plop the colorimeter on the Epic, and run the color calibration software on Windows. That would generate an ICC profile for the Epic's screen.
The next question though is how do I get the Epic to apply the ICC profile?
And in case you're curious, my colorimeter measured 7730-7740 K for pure white on the Epic's screen. So yes, it's rather blue.
Yea, nothing personal to the OP, but the colors are most definitely oversaturated. Has nothing to do with the brightness. Samsung, being a display manufacturer as well as a phone manufacturer, has display manufacturer tendencies. One of which is to oversaturate color on a display in order to give a "wow factor" to indiscriminate purchasers who generally assume that brighter and more vivid are better. Every amoled display used on a phone to date has had blooming out the wazoo. Not to mention how ridiculous skin tones look in photographs. I also wish there were a way to calibrate these things. I use a Thunderbolt which is now exhibiting some of the same issues with it's SLCD screen. Although I'm pretty sure that all they did was take the screens used on the EVO and pump up the color saturation. Guessing that's internally what the "S" stands for. The whites are nicer on the thunderbolt though, so at least I get that I guess.
Today,I was playing around with my Note, still worried about the black clipping and blocky videos changing ROM after ROM and didnt find any solution.
Out of curiosiry, I copied the GammaTest image to my PC, went to my display adapter settings, and cranked up the gamma from 1.0(default) to 1.5-1.9 and guess what?
http://imageupload.org/en/file/235342/gamma-normal.jpg.html
The first image shows the gammatest as it should. Here the computer's default gamma is set to 1
I increased my gamma value to 1.5-1.9 and this is the result.
http://www.imageupload.org/en/file/235344/gammahigh.jpg.html
And when setting the gamma to highier values, play all your test videos and images, there will be clipping and blocky pixellation just like you see on the Note. Try this for yourself on your PC.
This clearly shows that the clipping on the note is a software issue rather than a hardware defect and if we could somehow get to tune the gamma on the note, its the END of all the clipping and the horrible video playback.
A point to note is, when increasing gamma values, the images tend to become artificially bright and on reducing them, they tend to get darker. Maybe this explains why the Note produces the best whites as far as AMOLED displays are concerned and seems to be brighter than all the other Galaxy devices which includes, the Galaxy S, S2 and S3.
So the only and truly effective solution is to find a way to tune gamma values under the MDNIE settings and this should be implemented in a kernel. I've seen none so far which is capable of doing this. All CM9 based ROMS have Gamma control disabled under MDNIE settings. This also explains why the same problems were corrected on the Google Nexus with the LEAN Kernel.
This is definitely a GAMMA issue and definitely Software related.
I may be wrong, please do feel free to correct me if so.
Although I do agree (in my non-expert and in this regard completely worthless opinion) it is probably a software issue, this does not confirm whether our Notes' black crush is caused by software or hardware, or if it is fixable. This only means that you can make your display crappy by cranking up the gamma too high. The same result can be achieved in different ways.
I still dont understand the gamma test picture.. Which numbers should be seen? I see 4 to 21 perfectly and can barely see 3.. Should 2 and 3 be seen too?
Sry if I went off topic..
First of all, the image should be quite dark to see in a lit environment and on an ideally calibrated display, the image show a gradual fade to black. So theoritically speaking, on a good display, the left side is barely visible and is seen as a dark gray fading to black.
On the stock ICS kernels, the image is seen upto 4 and then clips to black. If you enable, Force GPU acceleration, you can see upto 1 which means more clipping. On stock GB, you can see all the way to 1. It varies from kernel to kernel.
We just need some way to access the gamma control under MDNIE settings on the Note which is at present, disabled on the CM9 kernel and is not present on any other kernels either.
When you wrote "CONFIRMED" i thought there was some quote from Samsung saying it was a software issue and they were looking into it
I had mailed GSMArena regarding this issue and even after they published it and many other blogs too, Samsung didnt give a damn about it. So I dont think they do now either. The EMMC Bug is more of a fatal issue and to date, even after announcing that they are "working" on a fix, there are none. People are literally bricking from the latest stock when all the other custom kernels have disabled the MMC_CAP_ERASE value from their kernels. So its better not to rely on Samsung for anything. They just sell their phones and thats it. The Note and everything alike are experimental phones and we are their lab rats. They basically only focus on the flagship Galaxy Phone. read GS3 and new ways to sell it.
satishp said:
We just need some way to access the gamma control under MDNIE settings on the Note which is at present, disabled on the CM9 kernel and is not present on any other kernels either.
Click to expand...
Click to collapse
Yeah because we have a unique display that is different from the I9100/I777 - so display tweaks for those won't work on N7000.
Sent from my GT-P7510 using Tapatalk 2
problem
1) Seriously guys, we have to get to the root of this problem. If we can get to the gamma setting on this display we can solve the problem. But how hard can it be to get there?
2) On the other hand, i think that what you did, was change the gamma on an LCD display. As far as I know there are a lot of diferences between LCD and OLED, appart from the fact that we have a pentile display (2 subpixels per pixel, pixels are in RGBG formation) and the LCD uses 3 subpixels per pixel (RGB).
We should join our forces and start on a mission to solve this issue once and for all.
Regards.
It is DEFINITELY a software issue. Try this out: reboot your phone, and while it is still booting and slowish, quickly start the calculator and see the top of the screen perfect and then, for no apparent reason, it gets some kind of a half-circle color spill. Also, when you open the gallery, find a folder with a stock video clip with jelly fish, and when you open that folder, gallery turns to black, and for a half of second it is perfect and then gets sort of color rendering problem. Final test is to start the camera when the night falls, switch to camcorder (for the smoothness), and just look at the screen, it is perfect, no black clipping, and then, as soon as you take the picture, the picture spoils and you get the black clipping- the live image on the screen while observing is totally normal. So, it is 100% SW issue!
I compared my Note to my friend's SIII and the screen is much darker on S3, and images themselves. So, it IS gamma issue. When you open the front camera on the SIII, in a bit darker environment, and look at yourself, you barely see the shape of your head, since gamma is much lower and it only picks up the bright parts, such as your forehead and cheeks. Also, images appear much MUCH darker on the s3 screen than what you see in reality. That is what samsung did to solve the issue: lowered the gamma.
Hope I gave some useful info (no pressure to hit the thanks button )
Cheers
P.S. please, those of you with good screens, post images here of your good note
http://forum.xda-developers.com/showthread.php?t=1801333
shatroghistro said:
It is DEFINITELY a software issue. Try this out: reboot your phone, and while it is still booting and slowish, quickly start the calculator and see the top of the screen perfect and then, for no apparent reason, it gets some kind of a half-circle color spill. Also, when you open the gallery, find a folder with a stock video clip with jelly fish, and when you open that folder, gallery turns to black, and for a half of second it is perfect and then gets sort of color rendering problem. Final test is to start the camera when the night falls, switch to camcorder (for the smoothness), and just look at the screen, it is perfect, no black clipping, and then, as soon as you take the picture, the picture spoils and you get the black clipping- the live image on the screen while observing is totally normal. So, it is 100% SW issue!
I compared my Note to my friend's SIII and the screen is much darker on S3, and images themselves. So, it IS gamma issue. When you open the front camera on the SIII, in a bit darker environment, and look at yourself, you barely see the shape of your head, since gamma is much lower and it only picks up the bright parts, such as your forehead and cheeks. Also, images appear much MUCH darker on the s3 screen than what you see in reality. That is what samsung did to solve the issue: lowered the gamma.
Hope I gave some useful info (no pressure to hit the thanks button )
Cheers
P.S. please, those of you with good screens, post images here of your good note
http://forum.xda-developers.com/showthread.php?t=1801333
Click to expand...
Click to collapse
ok, it is software. good. let's solve it !
It is not that easy..supercurio worked on it for 6 months and then left us hanging... He is not obliged, though..
We need a kernel which can access the gamma control. That is the only 'real' solution for this issue. You are right about the s3 having lower gamma and hence darker images. I've seen this myself and thats why I mentioned on my post that the Note's screen looks brighter due to the heavily cranked up gamma.
Apparently, this might be an issue with pentile amoled. Lower the gamma and lose pure whites for a clipping free darker image like on the Galaxy S or S3 or crank it up and get "richer" looking colours and whiter whites at the cost of extreme clipping in darker shadows.
This is the root of the cause. Improper gamma. Now only if someone who is experienced in developing Kernels would somehow enable gamma control which is present in the MDNIE settings but strangely disabled due to unknown reasons.
I saw that Liquid Black ROM has Gamma Control but didnt try that ROM yet. I really love the Tablet Mode in the Paranoid ROMS. So I want to stick to it while getting a solution.
I tend to agree with satish, it is then a hardware issue that could be remedied partly at cost other colours. I guess I was wrong, I use to think it was only caused by lower quality images, like watching tv on old crt, then watching same on hdtv, that also looks crap lol.
Sent from my GT-N7000 using Tapatalk 2
gbb14 said:
1) Seriously guys, we have to get to the root of this problem. If we can get to the gamma setting on this display we can solve the problem. But how hard can it be to get there?
2) On the other hand, i think that what you did, was change the gamma on an LCD display. As far as I know there are a lot of diferences between LCD and OLED, appart from the fact that we have a pentile display (2 subpixels per pixel, pixels are in RGBG formation) and the LCD uses 3 subpixels per pixel (RGB).
We should join our forces and start on a mission to solve this issue once and for all.
Regards.
Click to expand...
Click to collapse
I wasn't comparing LCD and OLED. I just wanted to prove the point that it is indeed gamma which is set higher on the Note and it is not a hardware issue. I dont know why no kernel for the Note is able to access the gamma control settings. Maybe like Entropy said, the Note's display panel might be a unique design such that any tweak applied on the display may cause unwanted results. As you all know OLEDs have certain hidden characteristics and its more or less like DNA. Every OLED panel is different. So the manufacturer tunes it into the most optimum settings possible on the particular technology used in the panel. But here, Samsung just did it wrong.
If you have noticed, many custom ROMS offer scaling down the brightness even below the default Samsung values and thats when AMOLED's hidden weaknesses start showing up.
In the end, I feel the only solution to this is a Kernel which enables the Gamma Control or somehow enabling the Gamma Control in CM9 which is currently disabled in most CM9 based ROMS.
baz77 said:
I tend to agree with satish, it is then a hardware issue that could be remedied partly at cost other colours. I guess I was wrong, I use to think it was only caused by lower quality images, like watching tv on old crt, then watching same on hdtv, that also looks crap lol.
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
Not exactly a hardware "issue" but maybe more like a hardware "limitation" of "Pentile" AMOLED. Samsung has hidden this issue in the Original Galaxy S and in the Galaxy S3 by lowering the gamma which results in darker images but "NO" or "Invisible" clipping hence satisfying consumers. Due to the lower Gamma on those phones, darker shadows seem to blend into eachother hence we dont see any clipping as darks are "Dark". And hence, when consumers dont "see" any artefacts, banding or clipping on their videos and images, they are satisfied. But this is at the cost of "dull" whites or artificial whites and lower overall perceived brightness.
As the Note has its Gamma cranked up, White looks white. I may even go forward and say that the Note produces the best whites ever seen on any AMOLED panel. Hence web browsing looks richer, colours look richer and the overall perceived brightness is again higher than other devices, But this again comes at the cost of clipping in darker shadows and hence poor looking videos and images, blocky pixellation,etc
So in the end, everyone is ready to sacrifice their "whites" for a clipping free display. Thats how it works out for consumers. As long as they dont "see" the problem, they believe its not there. So this may be a limitation of "Pentile" AMOLED and lowering the gamma may be Samsung's way of hiding the weakness.
The Galaxy S2 has an overall best screen which I've seen and thats due to the RGB AMOLED Technology. Colours look richer, the percieved brightness is higher and no clipping either. Thereby best of both worlds.
gamma
1) I saw some minor fixes on this thread http://forum.xda-developers.com/showthread.php?t=1715416 but nothing really gets deep down to the problem. Those fixes are actually some kind of effects, they aren't so good. They talk there about some kernels that helps the black clipping issue.
2)I have found an apk that is called voodoo display filter, can you check it out? it does seem to enhance the black.
3)As i was playing around with the screen settings on cm9, i noticed that if i set the screen scenario to VT, the mode to MOVIE, and the outdoor mode to ON, i can see down to number 4 on the gamma test image (usually with the default settings i can see everything down to 1).
regards
gbb14 said:
1) I saw some minor fixes on this thread http://forum.xda-developers.com/showthread.php?t=1715416 but nothing really gets deep down to the problem. Those fixes are actually some kind of effects, they aren't so good. They talk there about some kernels that helps the black clipping issue.
2)I have found an apk that is called voodoo display filter, can you check it out? it does seem to enhance the black.
3)As i was playing around with the screen settings on cm9, i noticed that if i set the screen scenario to VT, the mode to MOVIE, and the outdoor mode to ON, i can see down to number 4 on the gamma test image (usually with the default settings i can see everything down to 1).
regards
Click to expand...
Click to collapse
You are talking about the screen adjuster app which in my opinion is neither a fix nor a workaround for the problem. It destroys the blacks and uses the screen out of specification.
I have searched everywhere but couldnt find the apk for vodoo screen tuning. So, couldnt try that.
Anyways, this issue cannot be resolved with an app but only a kernel which supports gamma control.
You can find the app on bazaar android, i think it was made by super mario super curio, or something who used to work on this issue, and had a thread of over 50 pages, until he decided to quit the work because of flamers and stupid people.
I've had some ideas:
Can the devs add some new settings under cm9>settings>advanced>screen>mode ? ooooor instead of bumping the gamma on outdoor mode, to lower it?
regards
Op please change thread title, as it is hardware.
Sent from my GT-N7000 using Tapatalk 2
For the test, I used some professional light measuring equipment (my DSLR).
I captured an image at F/2.8, ISO 400, at 0 EV. Maxed out brightness on the Note 2, with Auto adjust screen tone off (important). I used a completely white picture shot at the same distance.
Before update:
Shutter speed 1/125s
After update:
Shutter speed 1/500s!
That is exactly 2 full stops. Or 4 times the original brightness.
Now, 400% sounds like a lot, like it would blind you. I don't want to create an over-expectation. It's seems adequately bright in a well lit room, where previously in that same room, the phone maybe seemed kinda dim.
I previously posted when I first got my original Galaxy Note II, that I was a little disappointed because people kept saying it is the brightest screen they ever had, and mine was far from that. But maybe those people saying that had something like this originally, but I just got it now. And it is beautiful.
Model: SHV-E250L (Korean Galaxy Note II, received OTA update today)
Very interesting mate,
thanks for sharing
Vatis
:what:
i have 2 notes here one of them have 4.1.1 and one with latest Poland rom
brightness is 100% the same on white page
its something wrong with ur camera :laugh:
yahyoh said:
:what:
i have 2 notes here one of them have 4.1.1 and one with latest Poland rom
brightness is 100% the same on white page
its something wrong with ur camera :laugh:
Click to expand...
Click to collapse
Camera is just fine. It is a precision instrument and I have definitive proof with 2 JPG and CR2 files with EXIF information. But maybe the Korean Note 2 was configured to be dimmer than the Note 2 that you have.
Funny thing is iPhone 5 was just released this week, and that screen is cranked up to super bright when put next to the Note 2. It is a shocking comparison, but now the Note 2 can hold it's own. But maybe they didn't want the negative press and decided to enable the brighter mode for the Korean customers as well.
If your thought your screen was never that dim in bright settings, maybe it will not impact your screen at all. On the other hand, if you were disappointed with the screen's brightness bright rooms or show rooms, then you may be very surprised when the update is applied. No promises. I heard through the grapevine from another XDA member I should expect a big boost in brightness, and I did want to confirm it so I prepared my camera to do testing before I hit update, and after. The improvement has exceeded my expectations.
Lucidmike said:
Camera is just fine. It is a precision instrument and I have definitive proof with 2 JPG and CR2 files with EXIF information. But maybe the Korean Note 2 was configured to be dimmer than the Note 2 that you have.
Funny thing is iPhone 5 was just released this week, and that screen is cranked up to super bright when put next to the Note 2. It is a shocking comparison, but now the Note 2 can hold it's own. But maybe they didn't want the negative press and decided to enable the brighter mode for the Korean customers as well.
If your thought your screen was never that dim in bright settings, maybe it will not impact your screen at all. On the other hand, if you were disappointed with the screen's brightness bright rooms or show rooms, then you may be very surprised when the update is applied. No promises. I heard through the grapevine from another XDA member I should expect a big boost in brightness, and I did want to confirm it so I prepared my camera to do testing before I hit update, and after. The improvement has exceeded my expectations.
Click to expand...
Click to collapse
are you sure u shot the photos in the same conditions ? same lightning / sun in the room? totall darkness room ?
but if its 400% brighter you should see difference by ur bare eyes.
4.1.1 to 4.1.2 made no difference in brightness here.
the only thing i seems to notice is that my screen has become sharper. since 4.1.2
also making pictures with the phones cam has improved 200% in dark places also the flash timing and photo taking has improved. i noticed
SKeijmel said:
are you sure u shot the photos in the same conditions ? same lightning / sun in the room? totall darkness room ?
but if its 400% brighter you should see difference by ur bare eyes.
4.1.1 to 4.1.2 made no difference in brightness here.
the only thing i seems to notice is that my screen has become sharper. since 4.1.2
also making pictures with the phones cam has improved 200% in dark places also the flash timing and photo taking has improved. i noticed
Click to expand...
Click to collapse
Yes, I did it in a controlled lighted environment. It was a scientific test. I understand light, and how to measure it very accurately because of my years studying photography.
With that said, my model is a Korean SHV-E250L Galaxy Note 2. I got it OTA from my carrier yesterday. The maximum brightness when I got the phone, originally was not as bright as I had hoped. And I just didn't understand how people were saying it was the brightest screen they had. I thought it was just some fake reviews of people trying to promote their haphazardly written reviews that was written with rumors than actual time with the device.
But now I know that some people got really bright Note 2's out of the box, and some didn't. I'm just hoping that people who wished that their Note 2 was a lot brighter, because they think it is dim, may experience the same effect with an update when it arrives.
Yeah just saw your video on the daily note II youtube channel (btw im a subscriber!)
Austin3161337 said:
Yeah just saw your video on the daily note II youtube channel (btw im a subscriber!)
Click to expand...
Click to collapse
Same here, like your videos very much. I recommended your channel for a "new to android" friend of mine who recently bought his note 2.
Sent from my GT-N7100 using xda premium
Hmmm it is definitely brighter, I thought I was the only one who saw it, whites are alot nicer for some reason.
Link
NumairRana said:
Hmmm it is definitely brighter, I thought I was the only one who saw it, whites are alot nicer for some reason.
Click to expand...
Click to collapse
Please let us have the link so that we also can relish a good feature in our phone
Lucidmike said:
For the test, I used some professional light measuring equipment (my DSLR).
I captured an image at F/2.8, ISO 400, at 0 EV. Maxed out brightness on the Note 2, with Auto adjust screen tone off (important). I used a completely white picture shot at the same distance.
Before update:
Shutter speed 1/125s
After update:
Shutter speed 1/500s!
That is exactly 2 full stops. Or 4 times the original brightness.
Now, 400% sounds like a lot, like it would blind you. I don't want to create an over-expectation. It's seems adequately bright in a well lit room, where previously in that same room, the phone maybe seemed kinda dim.
I previously posted when I first got my original Galaxy Note II, that I was a little disappointed because people kept saying it is the brightest screen they ever had, and mine was far from that. But maybe those people saying that had something like this originally, but I just got it now. And it is beautiful.
Model: SHV-E250L (Korean Galaxy Note II, received OTA update today)
Click to expand...
Click to collapse
Thanks for the data, if you could post the CR2's I would be interested in taking a look
androidizen said:
Thanks for the data, if you could post the CR2's I would be interested in taking a look
Click to expand...
Click to collapse
Here are the JPEG and CR2's. These pics are not glamour product shots. They are for the purposes of measurements off a highly calibrated light measuring device. You have to look at the EXIF information. The whole point is to take the same picture with the same level of brightness, by only exposing the sensor to 1/4 of the original open shutter time. The shutter speed indicates change in brightness because trying to evaluate a picture being brighter with people's eyes is always subjective.
Here's additional test information.
Camera: Canon 20D
Lens: Canon 60mm Macro F2.8
Light Metering: Center Weighed
ISO: 400
F-stop: F/2.8
0 EV
Phone settings:
100% Brightness
Auto Brightness off
Auto adjust screen tone off
Model: SHV-E250L
The Test:
Before update:
Shutter speed 1/125s - 1/160s
After update:
Shutter speed 1/500s - 1/640s
If you know a bit of photography, you will see that it was a good test with all the right settings. It was done in a room with a very dim controlled light source. It would be impossible to do a test like this with a point & shoot.
https://www.dropbox.com/s/520h0j18tqni5l4/brightnesschange.zip
Again, sounds like not everyone will get this boost, but some people have gotten it. Some people didn't. I just wanted some concrete numbers, hearing that I may notice this. I wanted more definite proof than say something like "yeah, it definitely kinda seems brighter."
So I did this right before and after the update. And I'm glad I did because even with these concrete numbers, people seem to not believe. I can only provide the facts for my device.
I have also noticed higher brightness. Now my eyes becomes tired faster than before
EdgaBimbam said:
I have also noticed higher brightness. Now my eyes becomes tired faster than before
Click to expand...
Click to collapse
sorry but brightness is 1000% the same with 4.1.1
i compered note2 running 4.1.1 with my note with 4.1.2 it its same :cyclops:
yahyoh said:
sorry but brightness is 1000% the same with 4.1.1
i compered note2 running 4.1.1 with my note with 4.1.2 it its same :cyclops:
Click to expand...
Click to collapse
Dunno but for me lowest brigthness is higher than before. Was darker with 4.1.1 and with first leak 4.1.2
The Brightness is better in 4.1.2
Sent from my GT-N7100 using xda app-developers app
If it would be 400% brighter then it would exceed at least 800 candela, making it brighter than even the most powerful LCD screens by quite the margin.
Sorry but somebody clearly DOESN'T understand light. Deducting brightness from a camera's shutter speed is failure at logic because they are not directly correlated. The camera can have a logarithmic response to light output in the shutter response.
The scientific method is to use a photometer and nothing else.
Let's try to figure this out.
Gsm arena puts Galaxy Note II at 402cm/2, they put iPhone 5 at 640cm/2.
So these are the possible scenarios:
1. Your Note II is now brighter than iPhone 5.
2. Before the update, your Note II model was dimmer than all others and now it's comparable.
3. You really have no idea what you are talking about.
So what we need is a comparison with iPhone and other Notes!
I myself just flashed a 4.1.2 Rom with matching kernel I did not notice any brightness difference.
I also studied the kernel source for your model "update 1", there were some differences in values for the display driver. But I'm not 100% what they do.
Sent from my GT-N7105 using XDA Premium HD app
hatcyl said:
Let's try to figure this out.
Gsm arena puts Galaxy Note II at 402cm/2, they put iPhone 5 at 640cm/2.
So these are the possible scenarios:
1. Your Note II is now brighter than iPhone 5.
2. Before the update, your Note II model was dimmer than all others and now it's comparable.
3. You really have no idea what you are talking about.
So what we need is a comparison with iPhone and other Notes!
I myself just flashed a 4.1.2 Rom with matching kernel I did not notice any brightness difference.
I also studied the kernel source for your model "update 1", there were some differences in values for the display driver. But I'm not 100% what they do.
Sent from my GT-N7105 using XDA Premium HD app
Click to expand...
Click to collapse
Sent from my GT-N7105 using XDA Premium HD app
http://forum.xda-developers.com/showthread.php?t=2008197
Here is a 16% real increase in brightness. Or from your point of view, 169%.
Sent from my Note II using Tapatalk
Bought the 10...love the way it runs but I bought it to show my photography work on (would use an ipad but I really detest the ios software).
The entire screen seems to be washed out overall with weak black levels and reds in particular are low saturation.
Sharp as a tack for sure....is it just mine? I see such conflicting reports in reviews although I am seeing more now about low saturation and contrast.
Very frustrating....unless someone out there knows some way of calibrating this display which I haven't found?
you are right
i am also a photographer (Canon 5D MkII)
i have watched some photos now(got my N10 yesterday) and as you said the screen is sharp as hell
i have never seen this amount of details with my DSLR photos.
im also doing hardware calibration and i see whats wrong right away and i have also tested it...the problem is that the gamma is to low.
The N10 has a Gamma Level around 1.4 - 1.5 where it should be 2.2!
(yeah that should make some attention hehe)
thats a fact and thats why we have washed out colors and bad contrast
but the good thing is that even at that low gamma we have a decent picture quality with good black levels!
i dont think the black levels on my device is washed out
it shouldnt be this good with this crappy gamma but it is
thats amazing and that tells that this is a quality screen above normal.
with correct gamma at 2.2 this screen will rock for sure.
so lets wait for some kernel guru to make some gamma adjustments
i have said i before that im willing to pay that person that makes gamma adjustment possible for the N10s.
You are correct...gamma is definitely too low.
As far as washed out reds go, I suppose I could process specifically for display on this tablet but that's a pain in the butt.
I wish the darned ipad wasn't such a restrictive ecosystem for the software. The colors rock on the ipad unfortunately but it's just too darned restrictive.
jfenton57 said:
You are correct...gamma is definitely too low.
As far as washed out reds go, I suppose I could process specifically for display on this tablet but that's a pain in the butt.
I wish the darned ipad wasn't such a restrictive ecosystem for the software. The colors rock on the ipad unfortunately but it's just too darned restrictive.
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im waiting for a i1 Display Pro colormeter
when i get it i will do a hardware calibration.
but i have checked some stuff already and i think that the colors is right for its low gamma.
also the brightness for the colors seems the same for Red/Green/Blue and thats a good thing
also the contrast and black level is reference.
i also think the color temp is close to 6500k
that means that the grayscale is correct.
so the only thing that messes up this display is the low gamma.
(or wrong gamma curve/line)
you have some tests here that you can do without a colormeter,if you want to check it out
http://www.lagom.nl/lcd-test/
also you can download the AVSHD 709 Patterns here.
http://www.avsforum.com/t/948496/avs-hd-709-blu-ray-mp4-calibration
just copy the mp4 files to your N10 and run them.
one note that i can see is that it seems that the gamma is higher at the lower shades
it seems to be around 1.8 there
that could explain why we dont have completely washed out blacks.
but what you want is a plain straight gamma line at 2.2
the N10 seems to have a hill shaped line starting high at lower shades and lower around maximum white.
I have tested the N10 with a Pantone "hocky puck" and can confirm the observations posted above. As compared to overly saturated profiles most normal users are used to, it's no wonder many see the N10 as flat and dull. My N7 is horrible, not only flat but had a color temp that was blueish green.
Much of my publicly displayed work for general web based consumption, has the saturation pumped up farther then I like, but my "fans" (sarc) seem to enjoy my photographs when contrast and saturation is pushed high. Ironically, my over saturated photographs look good to me on the low gamma N10, lol.
Either way, most all of us would benefit from being able to adjust our N10s. As many of you know this is best done at the kernel level and the master of sound and color Samsung kernels is SuperCurio and his project Voodoo. I have heard hearsay that he is working on kernel code and color profiles that can support adjustments for the N10, but I have yet to confirm this myself.
As usual we are given hardware that needs code improvements to be fully realized and that seems to always be done by the development community. It will taken time but I am confident we'll get there to some degree soon.
As far as I could tell there is no gamma correction in the kernel because the Nexus 10 uses a new display port interface thats in the Exynos 5. Most devices I've seen have at least a static gamma table in the kernel but that doesn't appear to be true for the Nexus 10.
Sent from my Nexus 10 using Tapatalk HD
12paq said:
I have heard hearsay that he is working on kernel code and color profiles that can support adjustments for the N10, but I have yet to confirm this myself.
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give him my money!
that sounds great
post in this thread if you hear more about it!
as i said in other threads i will pay around 50$ for the person that makes gamma adjustment possible for the N10.
btw: hockey puck?
are you serious ?
Hi,
I'm in process of buying Galaxy S5 but have one question to be answered. I've read some mixed reviews regarding the display performance and color representation of the S5 and I couldn't decide who to believe. I've read that cinema mode is the most accurate but also seen some reviews that it isn't as good either. A one of the most recent article on PhoneArena about displays also added to my fears regarding S5 display.
I want to ask from S5 users that is it really the case, does it really noticeable while viewing videos/images or playing games etc. How does cinema mode competes with M8, Z2 etc.
Phonearena have done quite a few blunders recently in their reviews, I don't trust them.
I'd rather go for AnandTech and DisplayMate test results. They have given the S5 very high marks.
Sent from my SM-G900H using Tapatalk
drakester09 said:
Phonearena have done quite a few blunders recently in their reviews, I don't trust them.
I'd rather go for AnandTech and DisplayMate test results. They have given the S5 very high marks.
Sent from my SM-G900H using Tapatalk
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Thanks for your reply. As you are using S5 can you please tell me your personal experience with display.
I recently changed from a S3 to S5 (G900F). The colors are much more natural than S3's, the screen is a lot brighter and the quality is awesome. It has extremely deep black so deep that you can't distinguish if the screen is off or on! Even in a dark room. The brightness helps when you are outdoors. I live in Macedonia, Greece and here in Greece we have a lot of sunshine through the year, especially now I find it easier to use under sunlight than the S3. Also the white is very good.
So, to sum up:
-Natural colors
-Deep black
-Very bright when you need it.
-Battery savings thanks to amoled technology.
I recommend that you use the phone in person before buying it, from a friend or at a store. This is my personal experience so don't take it for granted. You may end up with different results from me when you use it because everyone has different needs/expectations.
tahirk said:
Thanks for your reply. As you are using S5 can you please tell me your personal experience with display.
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I really like it but I use it on Cinema mode all the time. I can't stand oversaturation coming from a Nexus 5.
So, would you guys suggest that Cinema Mode is the way to go for everyday use?
drakester09 said:
I really like it but I use it on Cinema mode all the time. I can't stand oversaturation coming from a Nexus 5.
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Does it gets close to Nexus 5 in Cinema mode?
tahirk said:
Does it gets close to Nexus 5 in Cinema mode?
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Quite a bit, it's not bad at all.
Cinema mode is the Most natural But is stile Not perfect. With root could be possible To chance color value in The Files with The screen configurations? Chance The code strings. Because it is only a setting like The TV setting preset... But on a TV we Can set manually contrast gamma saturation ecc.. It would be interesting To find Files in The Phone that contains The sets of The screen And Try To change......