Hi guys!
As you know EeePad Transformer has quite a capable screen, with excellent viewing angles and good response time.
I just wrote an application to ease screen measurements, Free on market and Open Source, named Screen Test Patterns
But you might ask why its color look desaturated despite its correct contrast ratio.
I measure mine at 593:1.
All this explains when looking at the measurement graphs.
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Luminance
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Click to collapse
Target 2.2 Gamma is the white curve.
Almost every color are displayed brighter than it should, which results in washed out colors.
Red curve is also brighter than Green and Blue ones, that makes the colors looks a bit reddish.
At almost white there is some clipping, fortunately quite minor.
Gamma
Click to expand...
Click to collapse
Consequence of the luminance curve, the gamma curve is very far from following 2.2 reference line as it should.
Average on this screen is gamma 2, which explains by itself the washed out colors (even if it's not the only factor)
Near Black
Near white
Click to expand...
Click to collapse
Near black there is no clipping but the screen uses a common trick to increase the visual contrast, by lowering the luminance of the darkest values (its called black point compensation)
That's not pure 2.2 nor fits to the sRGB model, but it's a nice detail improving the visual result IMHO.
Near white thing's are not right, there is some clipping. Means values 252, 253, 254 and 255 gives the same output. Not terrible in its amount but never welcomed.
Now about colors:
RGB Levels (compared to 6500K)
Click to expand...
Click to collapse
Here is individual Red Green and Blue channels values compared to what they should be to get a 2.2 gamma response at D65 / 6500K which is the industry standard for content display (web, videos)
Color Temperature
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Click to collapse
Color temperature is mostly between 7500K and 8000K, but that's just numbers.
The most important in this graph is its linearity.
As you can see the white balance shifts to blueish in low between 0 and 15% gray.
This is because the black point of this screen (which is not black obviously) has not the same color characteristics as the other grays.
This screen doesn't really shines in this area, but its the case of most LCDs so there's nothing to worry here.
Still, it explains why dark grays look a bit blue.
Saturation Lumiance
Click to expand...
Click to collapse
Saturation Luminance graph allows to detect artificial color boosting like by an image processing
This graph shows that the luminance of colors are fairly linear. Not perfect due to screen hardware limitations, but okay.
Only notable is Greens and Yellows which are often lighter than then should. Once again it reinforce the lack of color punch, especially since its the colors our eye is the most sensitive to.
Saturation Shifts
Click to expand...
Click to collapse
100% Saturation is pure Red/Green/Blue/Yellow/Cyan/Magenta
This graph shows how much saturated are colors which are not at 100% saturation level (every non primary or secondary colors)
This graph shows that Red and Green colors lack saturation the most.
Blue saturation is a bit higher than it should in general.
I must admit I have no explanation why Cyan saturation is measured so high. It may demonstrate the presence of some sort of processing, but probably I don't understand the graph well enough yet.
CIE Diagram
Click to expand...
Click to collapse
And here is finally the famous CIE Diagram.
The latest explanation for the dull color is here: you can see the gamut is a bit small compared to the reference sRGB behind.
A smaller gamut has for consequence less vibrant colors.
Blue is okay, still lacks some extend, but Red and Green extension is lacking, as perceived by naked eye.
The additional dots show the screen is not affected by any color conversion distortion.
Wow, nice analysis there! I'm planning on getting a Transformer this fall for light school work stuff for ultra portability and long battery life.
So does this mean you are working on a Voodoo Color for the Transformer IPS panel?
jamesnmandy said:
Wow, nice analysis there! I'm planning on getting a Transformer this fall for light school work stuff for ultra portability and long battery life.
So does this mean you are working on a Voodoo Color for the Transformer IPS panel?
Click to expand...
Click to collapse
You're welcome.
Transformer Kernel has no trace of any drivers nor hardware capable of color correction.
It's not impossible Tegra2 display controller has a LUT but still unlikely as no Tegra2 device I saw offer "color vibrance" control or things like that integrated in their PC hardware and drivers.
At the contrary, Galaxy Tab 10.1 which is also Tegra2 adds another screen controller with a very advanced color correction engine (implementing even things like sharpening, noise reduction, dynamic contrast, chroma channels adjustments), not available in Transformer hardware.
Tegra2 is not especially documented.
Honeycomb is closed source (for a potential OpenGL engine)
So no not planned so far, it's just an analysis in order to better understand what/how/why, and have fun with the tool I just wrote.
Well written analysis. Although I don't have a transformer (maybe wait for newer generations?), I really appreciate your approach in the refinement of sound and visual on our android devices. Your measurements and analyses are some of the most, if not the most, detailed and informative ones that laymen like me will be able to obtain and comprehend. Thank you.
Great analysis.
Just a question: did you run the analysis on a B60 or B50?
In my experience, having owned the two, B50 has a very cold display, (as in your finding) while B60 is much warmer and pretty close to my calibrated monitor.
wis38 said:
Great analysis.
Just a question: did you run the analysis on a B60 or B50?
In my experience, having owned the two, B50 has a very cold display, (as in your finding) while B60 is much warmer and pretty close to my calibrated monitor.
Click to expand...
Click to collapse
Oh really there are several screen revisions with different color characteristics? (only backlight or more profound?)
I'm not sure what you cakll B60 or B50. If it's about the serial number, mine is partially wiped from the bottom transparent sticker, but its seems its:
B40KAS057442 12
The screen on my device is a bit cool but looks pinkish despite what the T° in Kevlin would say.
I'm not totally confident in the temperature reading of my colorimeters BTW, in some conditions.
Please tell me all that you know about different screen revisions
Anyway it makes sense there are several screen revisions because my measurement don't match in terms of temperature DisplayMate ones.
supercurio said:
It's not impossible Tegra2 display controller has a LUT but still unlikely as no Tegra2 device I saw offer "color vibrance" control or things like that integrated in their PC hardware and drivers.
Click to expand...
Click to collapse
Only just found this thread. Man, if accurate, that's seriously disappointing. Did you ever get any reply on Twitter from Nvidia re LUT info or documentation?
Related
Hello,
I have noticed when I look to my display in more detail I can see strange vertical lines through it. It is not very visible but I can see it better when there is white color for example in mail application, or if I setup blue color for lock screen. I wonder if it's just caused by AMOLED technology or my HW is not ok. Is it same on your devices?
Thanks
emkovicz said:
Hello,
I have noticed when I look to my display in more detail I can see strange vertical lines through it. It is not very visible but I can see it better when there is white color for example in mail application, or if I setup blue color for lock screen. I wonder if it's just caused by AMOLED technology or my HW is not ok. Is it same on your devices?
Thanks
Click to expand...
Click to collapse
what colour are the vertical lines? samsungs OLED screens have pentile technology which kinda sucks in my opinion. basicaly it simplifys the pixel structure quite a lot so that it has the same number if pixels but rather than each one being split into a red, blue, green section they have 2 parts each alternating between red green and blue green. i think advantages are that this makes the screen brighter and colours stronger but it also reduces sharpness and seems to make the pixels more visible. i might be wrong for your case but I didnt realise this when i got the phone. still would choose it for the amazing blacks, just a shame they done have normal pixel structure.
hope that helps
NikD1 said:
what colour are the vertical lines? samsungs OLED screens have pentile technology which kinda sucks in my opinion. basicaly it simplifys the pixel structure quite a lot so that it has the same number if pixels but rather than each one being split into a red, blue, green section they have 2 parts each alternating between red green and blue green. i think advantages are that this makes the screen brighter and colours stronger but it also reduces sharpness and seems to make the pixels more visible. i might be wrong for your case but I didnt realise this when i got the phone. still would choose it for the amazing blacks, just a shame they done have normal pixel structure.
hope that helps
Click to expand...
Click to collapse
Thanks. But I think it's not pentile technology. It looks like tiny straight scratches more visible on top part of the display especially visible on bright color,s for example when I use green for lock screen. I will return it to my seller and hopefully they will fix it or give me a new one.
I noticed it on my Focus, as did Engadget in their Nexus S review:
http://www.engadget.com/2010/12/10/nexus-s-review/
We did see some strange issues with the display -- while it does look handsome in most settings, we noticed some troubling inconsistencies in the panel against certain colors or tones. It was particularly pronounced on solid gray backgrounds (as you can see above). We're not sure the cause of the problem (or if it was simply an issue with the device we had), but it was somewhat troubling.
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Can't decide which bothers me more though, the lines or the fact that the screen dynamically dims itself based the amount of white pixels that are displayed on screen.
I can't see those in my omnia, maybe it's only present in some of the panels?
ricep said:
I can't see those in my omnia, maybe it's only present in some of the panels?
Click to expand...
Click to collapse
It was quite visible in Game hub mostly on top part of the display. Or try to setup your lock screen to green.
I've noticed this on mine too. I'm wondering if it's just a bit of image retention from the live tiles on the home screen, much like you get on plasma screens. I've got a photo frame app which I'm using as a screen saver for a couple of mins each day to 'clean' the screen.
It may do nothing, but it's worth a try
emkovicz said:
It was quite visible in Game hub mostly on top part of the display. Or try to setup your lock screen to green.
Click to expand...
Click to collapse
cant say i can see any lines in the game hub but the green really seems to make the pixels more visible on the white 'games' writing at the top
My Guess would be that this too is due to the PenTile Matrix used by Samsungs Super AMOLED Screens. As the green occurs more often but only at half the size this might lead to this effect:
http://en.wikipedia.org/wiki/File:Nexus_one_screen_microscope.jpg
Sometimes I'm tempted to dub the Display a Super Lame-OLED but only until I see the colors next to a non OLED Display.
StevieBallz said:
My Guess would be that this too is due to the PenTile Matrix used by Samsungs Super AMOLED Screens. As the green occurs more often but only at half the size this might lead to this effect:
http://en.wikipedia.org/wiki/File:Nexus_one_screen_microscope.jpg
Sometimes I'm tempted to dub the Display a Super Lame-OLED but only until I see the colors next to a non OLED Display.
Click to expand...
Click to collapse
That's interesting. My problem looked like those tiny green vertical lines on your picture, but mine had grey colour and were very visible on top part of the display, in the center I could barely notice them. The other thing is that I should see them very close to each other but in my case they were 2-3 milimeters far away from each other, which convinced me that my HW is broken. Also when I showed it to the seller he advised me to send it back for repair.
Firstly, I dont know does this thread lies in the right section or not, but i hope i'm getting it in the right place.
Back to the title, i think many of us complaining why doesn't Sony include 16M color to the gorgeous 4-inch screen we have. According to what i know, the only way to differentiate screen with or without 16M color is to see the ugly color gradient when viewing a saturated/colorful background or picture. So i made several comparison to some other devices i can get, i found that actually we do achieved 16M on our screen, and i think this is(or maybe not) the reason why X10 has a capped fps.
At this moment, i'm cropping some picture to show you my prove. Please be patient and tell me what you think. =)
Pics are coming!
Edit: Or to be more precise, even if we REALLY dont have the 16M screen, i have to admit that Sony really made a great tweak at the screen. [Dithered?]
Pictures are here:
Specification for all the device i used:
LG Optimus One, aka P500 on stock rom, maximum brightness, representing typical 256k screen
Sony Ericsson XPERIA X10i, maximum brightness
HTC Incredible S on stock rom, maximum brightness, representing typical 16M screen
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This is the close up shot.
Upper 2 is the cropped version from the original wallpaper i use. The tweaked version is purposely adjusted to match what we will see if it were on a LCD Screen. Notice the color gradient on the P500 and the smoothness of color we have is quite near to incredible s.
this picture is purposely saved in PNG format to prevent color lost when converting file format.
Hahahaha what? No I can assure you we don't.
Go use a screen you know is 16m colors then come back...
Dont worry, i do made a comparison. =)
I don't care what you think, im using a 16m now.
I can guarantee you that it isn't..
This kind of misinformation is hilarious
Anyway, can you actually tell me how to differentiate a screen with or without 16M color? i hope that what i know is correct. We only can compare the color gradient is it?
Just post ur comparison shots
i don't think SE will tell us we are not using 16M if we actually is.
though i really don't think there's any obvious different with or without 16M.
Sent from my x10i using XDA Premium App
op quickly upload ur prove...only picture will tell
hon kin said:
Anyway, can you actually tell me how to differentiate a screen with or without 16M color? i hope that what i know is correct. We only can compare the color gradient is it?
Click to expand...
Click to collapse
I personally find you can see the difference.
There are display comparison tests, there have been some done on this forum even.
---------- Post added at 02:06 PM ---------- Previous post was at 02:05 PM ----------
Lol this forum is hilarious...
We do not have 16M colours. Go to /sys/devices/virtual/graphics/fb0/bits_per_pixel to find out for yourself. 24 bpp is 16M colours, we have 16 bpp.
And no, the lack of true colour (24 bpp) is apparent in all aspects of the display, it is just easier to notice when looking at gradients, particularly green.
EDIT:
And no, the level of bits per pixel does not cause/have anything to do with the FPS cap.
Frosty666 said:
We do not have 16M colours. Go to /sys/devices/virtual/graphics/fb0/bits_per_pixel to find out for yourself. 24 bpp is 16M colours, we have 16 bpp.
And no, the lack of true colour (24 bpp) is apparent in all aspects of the display, it is just easier to notice when looking at gradients, particularly green.
EDIT:
And no, the level of bits per pixel does not cause/have anything to do with the FPS cap.
Click to expand...
Click to collapse
Lol finally some logic...
sahibunlimited said:
Just post ur comparison shots
Click to expand...
Click to collapse
LOL, both pics are gonna look the same on X10 unless altered
Pictures are up!
Frosty666 said:
We do not have 16M colours. Go to /sys/devices/virtual/graphics/fb0/bits_per_pixel to find out for yourself. 24 bpp is 16M colours, we have 16 bpp.
And no, the lack of true colour (24 bpp) is apparent in all aspects of the display, it is just easier to notice when looking at gradients, particularly green.
EDIT:
And no, the level of bits per pixel does not cause/have anything to do with the FPS cap.
Click to expand...
Click to collapse
Opps, never knew we can see the color of screen like this! Thanks for such informative post!
The reason i mention FPS cap because i saw some theory saying that 16M color will make the CPU overload, if the screen is refreshing at 60FPS, so maybe lower refresh rate can get us 16M color.
I own the incredible s and i can tell you nothing about the x10 display is anywhere close to the Inc s.
Not even in the same ballpark. Not even in the same universe for that matter lol
Yeah, i have to say that the S-LCD on Inc S is really impressive. Colors are vibrant, crispy detail. But on this point i just wanna focus on the color gradient. =)
It's 16bit.
The x10 just has a really good dithering method that works well due to the size of the pixels.
Take away that dithering and the x10's gradient colors will look weak.
hon kin said:
Yeah, i have to say that the S-LCD on Inc S is really impressive. Colors are vibrant, crispy detail. But on this point i just wanna focus on the color gradient. =)
Click to expand...
Click to collapse
The pic you chose is not a good one...
There are display comparison pictures try those and you'll really see. The difference
Also, for future reference, use a gradient image for comparisons, preferably black>green>white, as human eyes are more sensitive to discrepancies in green than any other colour.
It's a lot easier that way than a wallpaper.
Frosty666 said:
We do not have 16M colours. Go to /sys/devices/virtual/graphics/fb0/bits_per_pixel to find out for yourself. 24 bpp is 16M colours, we have 16 bpp.
And no, the lack of true colour (24 bpp) is apparent in all aspects of the display, it is just easier to notice when looking at gradients, particularly green.
EDIT:
And no, the level of bits per pixel does not cause/have anything to do with the FPS cap.
Click to expand...
Click to collapse
Um, True Color is 32bit.
Hzu said:
Um, True Color is 32bit.
Click to expand...
Click to collapse
Actually, true colour is 24 bpp. 32 bpp is true colour with an extra 8 bits for an alpha channel.
EDIT:
http://en.wikipedia.org/wiki/Color_depth
"Many modern desktop systems (Mac OS X, GNOME, KDE, Windows XP/Vista/7, etc.) offer a 32-bit color option (given a suitably modern video card), but in that context, 32-bit color refers to 24-bit TrueColor with 8 bits for an alpha channel. When switching to an 8/16/24-bit color option in those systems, generally transparency/translucency effects are disabled, and the only reduction in color depth is seen when going to 8/16-bit color."
OK guys, after the sound thread, i decided to open a new thread, speaking about the new AndreiLux's baby: The color engine
WHo remember Voodoo color for S.Amoled screens like GalaxyS and Nexus S?
certainly most of you
Yesterday Andrei released his first version, included in STweaks, of his new way to control screen colors ( and more!)
let's start with a Granger Rainbow to better understand how colors are
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As said, this new engine can be found in STweaks ( You must use Perseus 32 or newer kernel )
And here are Andrei explanation about settings ( as he said, they can be not very true and surely unfinished)
image can substitute 1000 words in this case
Ok in the images you can find alse descriptions
Only a word to the setting called
Front Buffer Early Suspend Delay
Click to expand...
Click to collapse
It is used to set a dalay in which time the phone continue to draws IE is used for CRT-OFF animation ( set to 100ms to have the correct animation)
The thread is done with, in mind, the intention to collect users display's configuration and make better colours and calibration
Please indicates the screen mode base ( Dynamic,Standard or Natural) or settings will be fault.. and also all intent while you were setting things ( for example to have better colors,or simply more vivid colors etc)
Hope to see movement here !
PS:Andrei said a lot more about settings but is so hard to collect all and make clear for all, so, so far, i qill limit to above, waiting for more clear details
Users Configurations:
mamba720027
nfsmw_gr
All credits to AndreiLux for that implementation
Click to expand...
Click to collapse
woow.. nice
Well,here's mine!
Screen mode: Dynamic
Chroma Saturation Control
-4
5
-4
0
-2
0
-2
0
I think the iphone has a good screen calibration can someone simulate that?
dimi22 said:
I think the iphone has a good screen calibration can someone simulate that?
Click to expand...
Click to collapse
Won't look the same on your phone either way, as all screens are different.
Toss3 said:
Won't look the same on your phone either way, as all screens are different.
Click to expand...
Click to collapse
Yes i understand that but maybe the colors can be made more accurate and the black clipping can be solved
dimi22 said:
Yes i understand that but maybe the colors can be made more accurate and the black clipping can be solved
Click to expand...
Click to collapse
this are my values with dynamic screen, great colors for me
-4
5
-4
-1
1
-5
13
15
deep colors and black status bar.
Where is the Stweak with screen configuration?
Oops, never mind, sorry about my mistake
Sent from my GT-I9300 using xda premium
these settings don`t affect screen lifetime and quality?
Can it fix zero black level bug? The GS3 display is always like #050505. It's never really 0 Volt per pixel. Looks cheap like LCD.
This doesn't affect the whites at all. Still doesn't fix screen tint issues.
nice start..
DualJoe said:
Can it fix zero black level bug? The GS3 display is always like #050505. It's never really 0 Volt per pixel. Looks cheap like LCD.
Click to expand...
Click to collapse
Er... SGS1 wasn't pure black neither, you could see a bit of brightness in the dark.
SGS3 is a bit brighter but calling it "cheap LCD" is going a bit too far.
I still have to see a LCD screen with the same black level (and I'm in front of one of the best MVA screen with something like a 2500:1 contrast).
Yep, right. I rather meant "cheap" regarding you can still see the borders (very dark rectangle) at night. Not the overall quality.
My SGS Plus (I9001) is perfectly dark though.
burner07 said:
these settings don`t affect screen lifetime and quality?
Click to expand...
Click to collapse
I'm guessing they will as per standard amoled rules.
- Darker screen = less battery
- Some colours (red iirc) = less battery
- I also guess that higher saturation causes more battery drain cause the pixels are outputting stronger/brighter...
But really, this is more about tweaking your screen to meet your preferences - the small changes most users will make will probably have a negligable effect on battery life.
Now, if only someone could port / make this for the original Galaxy Note and it's cr**py mDNIe sh**ty failure... that'd be great .
Just a wild post here, don't mind me.
Im unable to find some of these options on stweaks. Using Perseus 33.1.
R: Perseus screen engine : Spread your colors !
Perseus 33 si using new way to calibrate colors,and will be final in next small update
Until Andrei release it,I will no more update this thread as marked obsolete at the day of today
Sent from my GT-I9300 using xda premium
oswade said:
I'm guessing they will as per standard amoled rules.
- Darker screen = less battery
- Some colours (red iirc) = less battery
- I also guess that higher saturation causes more battery drain cause the pixels are outputting stronger/brighter...
But really, this is more about tweaking your screen to meet your preferences - the small changes most users will make will probably have a negligable effect on battery life.
Click to expand...
Click to collapse
he meant will the screen get damaged.... some places it says not to mess with the colours in amoled screens... eg: screen filter apps...
even i would like to know this...
but i doubt this because andreilux knows what he is doing..
can we start a thread for sharing everyones screen settings ? or do we use this thread for that...
Here is mamba720027's latest STweaks Screen color settings for anyone who want to try while we wait for the galaxy s3 calibration. This the best i could get it at this point.
[Global Controls]
Enable Register Hook - Checked
Enable Master Sequence - Checked
[Chroma Saturation Control]
2
8
17
8
3
-8
-1
[White Colour Temperature Control]
Toggle colour temerature control - Checked
Colour Temperature
-2000K
[SCR Colour Channel Modifications]
White Colour Balance
-4
-4
-4
Primary RGB Colour Channels Addends
16
16
4
13
-50
-4
9
-26
-7
Secondary YCM Colour Channels Addends
-11
16
-16
-8
-6
-3
-14
8
-11
Just bought a LG G Pad 8.3 a few days ago after reading the many positive reviews online.
Was especially looking forward to the supposedly high quality screen with excellent color accuracy, as it is also marketed by LG.
So it is with disappointment to discover that my unit does not exhibit these qualities.
The screen on mine has a low color accuracy, especially with reds.
Red colors deviate quite a lot and look almost orange. This results in a poor viewing experience and was not what i expected. Most review videos and photos i have watched does not show this color imprecision.
I suppose i am not the only one with a screen looking like this.
It seems like the screen has not been calibrated properly from the factory.
I feel that i have gotten an inferior product and questions if this is general quality problem with the tablet?
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A lot of us have a yellowish screen (including me), I personally fixed it using Screen Adjuster, then the CM 11 built in color adjuster. You can try the color correcting methods I mentioned or use your warranty for a replacement.
Sent from my iPhone using Tapatalk
I don't really consider my screen as being "yellowish". The whites displayed are pretty neutral i think.
I already tried Screen Adjuster as you suggested, but i have not been able to get any improvement with it. Rooting is not something i want to do for now.
I suspect that LG is sourcing different LCD panels for this device, and that they are not all of equal quality or calibrated to the same standard.
The early production units, among those sent to reviewers, seems to have screens of higher quality with more accurate colours.
Mine is a 402 production.
With the replaced display I also noticed orange-ish red. The white is white, black is black, no lightbleed or yellow-ish screen. I compared some pics on a professional Dell U2412M IPS monitor and the red was really horrible orange-ish on G Pad.
Zarrick19 said:
With the replaced display I also noticed orange-ish red. The white is white, black is black, no lightbleed or yellow-ish screen. I compared some pics on a professional Dell U2412M IPS monitor and the red was really horrible orange-ish on G Pad.
Click to expand...
Click to collapse
Thank you for sharing your experiences. Please cast a vote in the poll.
Could you perhaps show a photo of your screen?
I think that LG at some point changed the IPS panel used in G Pad 8.3 for a different one. After all of the problems reported with the early productions this would seem appropriate.
It seems, though, that the color calibration of the panels have gone wrong in the process.
It's regrettable, as i otherwise like the aspects of the tablet. I guess i will just have to live with it or buy something else.
I think that the major problem is the gamma curve setting. If you can and know how to, try the kernel posted in the Android development section, which has improved (normal) gamma, although it has possibly some other minor issues unrelated to the display, but nothing unrecoverable - you can flash back to stock kernel easily.
I am currently running with it so you can rest assured that the tablet is not going to die, or something
P.S. Maybe I spoke too soon - had to revert back to the stock kernel because I got apps crashing and also some spontaneous system reboots with the suggested kernel, probably due to the additional tweaks in it, apart from the gamma tweak.
Zarrick19 said:
With the replaced display I also noticed orange-ish red. The white is white, black is black, no lightbleed or yellow-ish screen. I compared some pics on a professional Dell U2412M IPS monitor and the red was really horrible orange-ish on G Pad.
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Although I do not have any orange issues, it is true the colors are not perfect, but nor are they bad, at least on mine. My monitors are all color-calibrated and I too have made comparisons. You can use Trickster Mod to adjust the colors, but the gamma really requires the kernel of the ROM in my sig. Bear in mind that though Dell produces a nice monitor, if it is not specifically color-calibrated, then it too is not a reliable source.
Everything in L is white - bright, blinding, battery wasting white. Dialer, settings, contacts, app drawer. It's too much and doesn't look as elegant as a dark theme.
Hoping that with release of source code, someone will make a dark theme. Will save a lot of battery life as well.
Color does not matter in amoled screens, when it comes to battery.
oneplus said:
Color does not matter in amoled screens, when it comes to battery.
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??
oneplus said:
Color does not matter in amoled screens, when it comes to battery.
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Love the white, looks more professional/sharper, it's about time! The dark/holo looks very dated imo
wtherrell said:
??
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RedBlueGreen said:
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It's true (B vs W, not color). Samsung has optimized the AMOLED displays so well that blacks and whites almost use the same amount of power. Check out the advanced reviews of the S4 panel.
Bjray said:
It's true (B vs W, not color). Samsung has optimized the AMOLED displays so well that blacks and whites almost use the same amount of power. Check out the advanced reviews of the S4 panel.
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Not quite. On AMOLED displays, when you have a black image, those pixels are actually off (or using an extremely low amount of power). That's one of the benefits of AMOLED - you get very rich and very dark blacks.
msal said:
Not quite. On AMOLED displays, when you have a black image, those pixels are actually off (or using an extremely low amount of power). That's one of the benefits of AMOLED - you get very rich and very dark blacks.
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I remember this thread awhile back (~ 4 years ago):
(1) At maximum brightness, screen on for 15 minutes
- Default wallpaper will consume about 5% (from 36% down to 31%)
- Pure black wallpaper will consume about 3% (from 30% down to 27%)
(2) At brightness = 20+%, screen on for 15 minutes
- HTC Black wallpaper will consume about 2% (from 26% down to 24%)
- Default wallpaper will consume about 3% (from 23% down to 20%)
I would say at low brightness, 20% - 25%, you will get 1% up to 2% battery saving per 15 minutes, let say 1.5% per 15 minutes. For 1 hour you will get about 6% battery saving.
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I have a S4 myself and using a black background doesn't save that much. But yes, there are some savings, but not like what is shown above.
Of course everyone's mileage may vary. My panel might just suck
oneplus said:
Color does not matter in amoled screens, when it comes to battery.
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Click to collapse
While this is untrue, an even more important point that the op brought up is that the white is UGLY...
look at the app drawer on lollipop! It looks like something circa windows 98! Black is not only sleeker, classier, easier on the eyes, it's easier on the battery. The phone has a freaking amoled screen. Cmon google, utilize it!
And before someone responds with "well with L and project Volta its not necessary...". No matter how efficient the os is it'd be more efficient with a less power consumptive display. So it'd be that much more battery life.
But I mean god, its ugly in white...
qwerty12601 said:
While this is untrue, an even more important point that the op brought up is that the white is UGLY...
look at the app drawer on lollipop! It looks like something circa windows 98! Black is not only sleeker, classier, easier on the eyes, it's easier on the battery. The phone has a freaking amoled screen. Cmon google, utilize it!
And before someone responds with "well with L and project Volta its not necessary...". No matter how efficient the os is it'd be more efficient with a less power consumptive display. So it'd be that much more battery life.
But I mean god, its ugly in white...
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I would have rather prefered the app drawer from kitkat. It looks a lot nicer although you can't go wrong with Lollipop animations.
Ugh, I mean really...
qwerty12601 said:
Ugh, I mean really...
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Yeah, black transparent or just transparency alone would make it look more aesthetically pleasing.
Agreed. Too much white. I will us nova anyways I'm sure so that won't be a problem on the launcher stuff, but everywhere else it's too damned bright. Hurts my eyes some times looking at web pages with a white background when im in a very dark room. Even with brightness turned tdown all of the way.
You being ignorant about a topic does not make me a troll he said white wastes battery, if you read his sentence. That's not true in amoled screen. White, black, w.e color waste battery the same in amoled.
I'm sure I will get sick of the white eventually, and make my own black theme. Kind of sad that I haven't done any theming since I got rid of my S4.
oneplus said:
You being ignorant about a topic does not make me a troll he said white wastes battery, if you read his sentence. That's not true in amoled screen. White, black, w.e color waste battery the same in amoled.
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You're information is wildly incorrect. I don't know where you're getting that idea from. A single light bulb in your house that is off will use less energy than a light bulb that is on. There is no disputing that. Its a fact of electricity. The same applies to an amoled screen, if the pixel is off, its not using the energy an illuminated pixel is. Plain and simple.
Here's a link, take a read...
http://www.androidauthority.com/black-amoled-display-power-saving-541984/
Better yet... Google, once upon a time, mentioned theme support. I'd like to see that in Lollipop. That way, whether you want White, Black, Yellow, Green, or even Purple Polka Dots, you can be happy.
jt3 said:
Better yet... Google, once upon a time, mentioned theme support. I'd like to see that in Lollipop. That way, whether you want White, Black, Yellow, Green, or even Purple Polka Dots, you can be happy.
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I do find it odd that they never added the theme engine. It was always open source. Maybe it posed some security risk or performance issue that they didn't like?
Erm no. Black is significantly more power efficient vs white even on modern AMOLED panels.
Just look at the Note 4 tests on Android Authority. 40% or so more battery life when primarily using black backgrounds versus those with colours.
Also, grey/white shows all of the defects in every AMOLED panel. There'll always be a pink or yellow hue to one side, or if you're unlocky, multiple areas. It's not great.
It's still far easier to ignore than the uneven backlighting that still plagues significant amounts of high end LCD panels these days.
jbdan said:
Love the white, looks more professional/sharper, it's about time! The dark/holo looks very dated imo
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i concur. it looks fantastic and much cleaner and a hell of a lot more "grown up" as an OS.