Database Users

nexus 7 screen colors

Loving the nexus 7 however I'm wondering is it me or does the screen overall color seem a little faded/washed out. I mean the images are crisp but it seems the color isn't very vibrant.. thoughts? Or do I have a bad unit?
Thanks so much

I found myself thinking the same thing. However the only comparison I have is the same background on my Galaxy Nexus. It could just be the GN being very saturated. I like that though and was a bit disappointed by the screen.

I find the screen to be great. However, I have an Evo LTE so the color saturation seems to be pretty similar.
Sent from my Nexus 7 using Tapatalk 2

The screen is great to me. Very clean and viewing angles are great.

Washed after update
The colors were fine, but I'm noticing that they appear washed out since the most recent update. I don't have a direct frame of reference since I updated, but I could swear that the colors aren't as vibrant as they were before. I also have an Evo 4G LTE and the N7 colors are less vibrant (something that wasn't too obvious before). I know they are different screens, it's just something that didn't bug me before.

Hi, could you please comment on how good is skin tone color reproduction. Thanks.

i thinked the same that the colors looks like a bit washed out / fade.. is this normal?
The colors on the S3 are vividly colored

Defiant81 said:
Loving the nexus 7 however I'm wondering is it me or does the screen overall color seem a little faded/washed out. I mean the images are crisp but it seems the color isn't very vibrant.. thoughts? Or do I have a bad unit?
Thanks so much
Click to expand...
Click to collapse
I agree. I think the default automatic brightness feature is a little dull. You should try to manually increase the brightness....that seemed to fix my problem.
Sent from my Nexus 7 using xda app-developers app

Compared to both my Galaxy Tab (original 7" 2010 model) and my Galaxy Tab 8.9 LTE, (both with PLS, Samsung's version of IPS screens), the Nexus 7 is indeed more washed out/dimmer. It's brighter than my Nook Color though.
But the colors are fairly accurate and the viewing angles are good. Hoping for a mod that increases auto-brightness levels a few notches, and a mod to adjust color temps/saturation and I'd be happy with it.
You reading this Supercurio?

This should make it easier to enable/disable NVidia's Tegra PRISM option for rooted devices only : market link

4.1.1 -> 4.1.2 = exactly 400% the brightness, WOW!!!

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

[Q] Colour Sharper

So i have a nexus 10 and my dad has an iPad 3rd gen. Now the thing is that from specs my screen is supposed to be better than his but then after comparing two same 720p playing videos it seems that the ipad 3rd gen gives more sharp colours than mine and was wondering whether there was a way to fix(without root) this as i remember my brother showing me on his S3 settings a way to change his screen settings to dynamic which makes colours look a lot more sharp and better looking though S3 has touchwiz and i have vanilla
Thanks

By sharp I assume you have to mean saturated. Colors look slightly better on the KTManta kernel, but we do not have any sort of color control at all and probably never will. There are a TON of posts on this matter so you should just go search them.

adnaan146 said:
So i have a nexus 10 and my dad has an iPad 3rd gen. Now the thing is that from specs my screen is supposed to be better than his but then after comparing two same 720p playing videos it seems that the ipad 3rd gen gives more sharp colours than mine and was wondering whether there was a way to fix(without root) this as i remember my brother showing me on his S3 settings a way to change his screen settings to dynamic which makes colours look a lot more sharp and better looking though S3 has touchwiz and i have vanilla
Thanks
Click to expand...
Click to collapse
You can tweak this through various apps and kernels, but there are different types of screens (Ex: Amoled, IPS) and they all produce colors differently.
Edit: I stand corrected...
Sent from my Nexus 4 using xda premium

speedygonzo said:
You can tweak this through various apps and kernels, but there are different types of screens (Ex: Amoled, IPS) and they all produce colors differently.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Sadly, not true with the nexus 10. No apps or kernels. Listen to Enigma.
Sent from my EVO using xda app-developers app

Dark video looks bad

Anyone else notice this? I took some pictures comparing my iPad Mini (left) vs Nexus 7 2013 (right). The first attachment is from YouTube F4bnVZmdOKs @ 5:31 - notice the splotchiness in the darkest areas. The second is from G-R8LGy-OVs @ 3:56 - notice the halos around the stars. When I watch on my computer (HP LP2065 IPS LCD) it looks much more like the iPad's display.

Looks like video compression blockiness that you don't see on the iPad because of the horrible black levels. If you look at a black still picture do you see the splotches?

Dimethyl said:
Anyone else notice this? I took some pictures comparing my iPad Mini (left) vs Nexus 7 2013 (right). The first attachment is from YouTube F4bnVZmdOKs @ 5:31 - notice the splotchiness in the darkest areas. The second is from G-R8LGy-OVs @ 3:56 - notice the halos around the stars. When I watch on my computer (HP LP2065 IPS LCD) it looks much more like the iPad's display.
Click to expand...
Click to collapse
I agree with the above poster, the splotchiness is video compression artifacts, and if you look past them, and take a step back, you'll actually see that you're getting much more detail and a better gamma on the N7 vs. the iPad. On the iPad side, the woman is completely black, yet on the N7, you can see her face and clothing detail that are simply missing on the iPad.
I would guess that the halos around the stars are similarly missing information on the iPad. With the N7, you're getting the whole picture.

That ipad mini picture is terrible. Talk about crushing blacks. ..... Look at the detail in the nexus picture. I hope your TV is not calibrated like the mini.
Sent from my SAMSUNG-SGH-I337 using xda app-developers app

I think its due to the high DPI. Try any HD video.

Actually the iPad Mini is quite terrible with the loss of dark details.

oh god that ipad looks awful dude.
Sent from my Nexus 7 using Tapatalk 4 Beta

there's probably a video player out there that supports gamma adjustment if it's not to your liking.in a specific video. it's hard to tell from that picture how black crushing the ipad is but some would find it looks "better" when the video is of poor quality. one thing you might want to do is adjust the backlight first (no need to do it global if you've got something like mx player) as the new N7 is supposed to be very bright. in the old n7 you can get away with making mx player always use max brightness because the maximum brightness isn't very high.

Good points. I attached a comparison of the black level test from Lagom. On the Nexus 7 I can see the 1 square easily. On the iPad Mini I can see the 5 square fairly well and the 4 just barely (IRL; hard to tell from the picture). The brightness setting for this and the previous comparisons was 25% on the Nexus 7 and around 55-60% on the iPad Mini. The subjective brightness was similar.

I borrowed an iPad 3 (Retina) to do some more testing. This time to eliminate any variables with video streaming I downloaded the 720P MP4s on my computer and captured stills with VLC. I used Chrome on both Android and iOS to view the images. Same videos as before, roughly the same scenes. The first 2 attachments show the comparisons: iPad 3 on the top, and Nexus 7 2013 on the bottom.
The 3rd attachment is the black level test on the iPad 3. I can clearly see square 2 and if I stare enough I can faintly detect square 1 (IRL; hard to tell from the picture again). The 4th attachment is a comparison of a full white image to show that the brightness is matched fairly closely (easier to tell if you convert to greyscale to ignore white balance differences) - 25% on the Nexus and just a hair above 50% on the iPad.
The 5th and 6th attachments are the source images I used for testing. I converted from PNG to JPG to make the attachments fit, not that it matters much since it's from a lossy source.
I still get the feeling that something isn't right about the way the Nexus looks. I was able to simulate the effect almost identically by applying gamma correction of 1.6 in IrfanView. That would seem to indicate that the Nexus's gamma may be way off, but after I finally found a way to view Lagom's gamma test image without scaling on the Nexus it looked pretty much spot-on correct. It it possible that only the very dark areas are "shifted" in a way that wouldn't affect the gamma test image?
This leads to the last attachment - a new black level test on the Nexus. Again, the brightness was calibrated similarly to the iPad, and the camera was set on full manual mode with all the same settings, so you can directly compare it to the iPad black level test image. Notice how the squares get brighter way faster than on the iPad? It's a lot more pronounced in the darkest squares, but the difference shrinks by the time you get up to the 40 square (last one before full white).

For my final test, I took pictures of Lagom's contrast test image on the Nexus 7 2013 and iPad 3. I then applied a Gaussian blur, converted to greyscale, and determined the RGB value for the first 13 bars. The first attachment is a chart of the results. The brightnesses converge around the 10th bar (RGB = 79 in the source image), but before that the Nexus's brightness is inflated. This explains why the gamma test looked fine, because even in the 10% luminance test, the RGB value of the ideal point is 88. The 2nd and 3rd attachments are the Nexus and iPad (respectively) displaying the test image.

you should bring all this to the "yellow tint" thread. this is a nice showcase on what's wrong with Nexus screen.

I recently purchased an X-Rite i1Display Pro display calibrator. I used it to make really accurate luminance measurements* of the Nexus 7 (2013) and iPad Mini while displaying shades of gray from 0 to 255 in steps of 5. I then calculated the effective gamma** at each step to create the attached chart. It also includes the effective gamma of the reverse sRGB transformation.
My conclusion is that the Nexus is fine if sRGB is the ideal target. I'm not sure what the ideal target is though; in fact, I don't really think there is one. A display gamma calibration of 2.2 to 2.4 seems like the most common recommendation. But almost everyone ignores the fact that sRGB's effective gamma is a lot lower in darker areas. I get the feeling that most people calibrate to a fixed target. sRGB is probably more technically correct. But if fixed 2.2 to 2.4 is more common, does that make it a de facto standard? E.g. if professional movie studios edit their movies on monitors calibrated to fixed gamma, but I watch it with sRGB gamma, doesn't that mean I'm not viewing it as intended by the creator? I'm not saying this is necessarily the case. I'm really, really confused .
So anyway, I just wanted to share my results. You will have to draw your own conclusions.
* I used spotread.exe from Argyll with the -x swtich. The first number from the "Yxy" result is luminance in cd/m^2.
** Effective gamma meaning: the gamma value you'd have to use to get the same luminance value from the input value. Formula is log(luminance) / log(input), where luminance and input are percentages from 0 to 1. I adjusted the luminances to account for non-perfect black levels.

mannequin said:
you should bring all this to the "yellow tint" thread. this is a nice showcase on what's wrong with Nexus screen.
Click to expand...
Click to collapse
I would say the iPad is just warmer (red) and the N7 looks more cooler (greenish-blue) Not by much though, just a few degrees off. No one device is perfect.
With the dark areas, it seems the brightness and/or gamma is too high. I use my screen at half brightness which seems on par with other devices and haven't noticed a big difference.
Hopefully we get a screen calibrator like on the N4 and can make adjust individual adjustments.
Sent from Nexus 7 FHD from XDA Premium HD

Dimethyl said:
My conclusion is that the Nexus is fine if sRGB is the ideal target...
Click to expand...
Click to collapse
all the measurements that you did are only true to the device that you own. the screens in the wild would differ (sometimes drastically) from yours and from one another.

I totally agree with you. I also see lots of artifacts with any dark scene on my 2013 Nexus 7. It doesn't matter if I am playing a higher resolution (HD) scene or lower resolution one. I wish there was a way to fix that.

Dimethyl said:
I recently purchased an X-Rite i1Display Pro display calibrator. I used it to make really accurate luminance measurements* of the Nexus 7 (2013) and iPad Mini while displaying shades of gray from 0 to 255 in steps of 5. I then calculated the effective gamma** at each step to create the attached chart. It also includes the effective gamma of the reverse sRGB transformation.
My conclusion is that the Nexus is fine if sRGB is the ideal target. I'm not sure what the ideal target is though; in fact, I don't really think there is one. A display gamma calibration of 2.2 to 2.4 seems like the most common recommendation. But almost everyone ignores the fact that sRGB's effective gamma is a lot lower in darker areas. I get the feeling that most people calibrate to a fixed target. sRGB is probably more technically correct. But if fixed 2.2 to 2.4 is more common, does that make it a de facto standard? E.g. if professional movie studios edit their movies on monitors calibrated to fixed gamma, but I watch it with sRGB gamma, doesn't that mean I'm not viewing it as intended by the creator? I'm not saying this is necessarily the case. I'm really, really confused .
So anyway, I just wanted to share my results. You will have to draw your own conclusions.
* I used spotread.exe from Argyll with the -x swtich. The first number from the "Yxy" result is luminance in cd/m^2.
** Effective gamma meaning: the gamma value you'd have to use to get the same luminance value from the input value. Formula is log(luminance) / log(input), where luminance and input are percentages from 0 to 1. I adjusted the luminances to account for non-perfect black levels.
Click to expand...
Click to collapse
Wow....I just look at my screen. It looks nice.
Not sure WTF all that shizz you posted is about. 250 device = 250 device. /shrug

Mine's right about fine xD .

Custom Kernel?

If I had one major complaint about this device, it would be the fact that the camera settings when watching video is much too low closing their to not be sufficient shadow detail in darker scenes 1 watching movies or video. This is very obvious when comparing the screen to the latest Nexus 2013 model which is not only but brighter but the dark areas so much more detail.
The screen adjuster app can help a bit with this however there are sacrifices in terms of contrast to get this added detail. It would seem that I just meant in gamma correction can only be done at the kernel level. This has been done successfully on the Nexus 4 & 5 phones by having custom kernels developed.
I sincerely hope that there will be some development on a custom kernel for our device. I can accept the fact that it is not as bright as a Nexus 7 tablet 2 compare the two is difficult as the battery life on Nexus 7 at similar brightness levels much favors the Nexus device. However it is difficult to view movies that have dark scenes given the issues I have mentioned. I'm wondering if anybody knows how to contact developers who have created a custom kernels for the other devices to try to develop for our own.
Sent from my SM-N900W8 using Tapatalk

I totally agree with you. Warm color balance, and low max screen brightness are only minor issues compared to this. I've already opened a topic about it here :
http://forum.xda-developers.com/showthread.php?t=2599296

Mine actually has great whites better than my old nexus 7 2013 and my note 3. I can handle lower brightness but the black crush is bad. Wonder if Dalingrin or Faux kernel developer can be contacted to work on this?
Sent from my SM-N900W8 using Tapatalk