***NOTICE***
PLEASE READ THE OP ATTENTIVELY BEFORE POSTING (IT GETS UPDATED DAILY)
This thread is about sorting the different type of screen.
All we ask is you test the settings provided in the OP and return your results for gamma test (4th test image).
We do not want any new settings unless you provide us gamma results showing your screen significantly don't belong to any of the screen type listed in the OP.
This thread is not about subjective preference and taste, overall aesthetic or accuracy (because it has no meaning if people have different screens), but only about one objective thing, gamma test
----------------------------------------
Current Method Screen count: Type K - 1 / Type H - 2
Old Method Screen count: Type K - 5 / Type O - 14 / Type V - 1 / Type C - 5
----------------------------------------
Hello everyone,
Ill build the op with our discussions.
dagaetch said:
People are reporting different results with the same display settings, thus leading to a hypothesis that there are (at least) three different screen types on various N4's.
Click to expand...
Click to collapse
Please tell us which kind screen you have, revision of your hardware (find out here) and lcd_make_id Find it here.
PROTOCOL
1) Install Franco's Kernel.Update app and the latest kernel
2) Test the screen using the 4th test (4th image, just touch the image to switch) in the gamma control panel.
3) You should see no color band holding your phone afar with your hand (1 arm length) but only a greyscale gradient from black to white.
4) Return your results so we can sort the data.
Type H (formely known as Type O) - halluci293's settings
RGB 200,190,185*
Gray 0
Mids 23
Blacks 119
Contrast 0
Brightness 8
Saturation 23
Whites 0
Type K - Kel Ghu's settings
RGB 185
Greys 0
Mids 6
Blacks 119
Contrast 19
Brightness 15
Saturation 7
Whites 0
OBSOLETE but you can still test with this method, results are always welcome.
TESTING SCREEN USING DISPLAY TESTER
If none of there settings gives you a gamma of 2.2, please TELL US! And give us a setting that is adequate for your screen:
Our screen type is the one which gives 2.2 gamma for red, green and blue (NOT GREY) in "Display Tester" app. Kernel is r83 onward using Franco app v.8.8:
Application to use to measure gamma: Display Tester
PROTOCOL 1
1) Install Display Tester, latest Franco's kernel and application (Franco's Kernel Updater).
2) Test each of the settings provided below.
3) Post your gamma for RED, GREEN and BLUE for each of the settings.
4) Optional but still important: Provided us Production date, HW revision, kernel version and lcd_maker_id
Screen gamma: Type K > Type O > Type V
Type K - Kel Ghu's settings (gamma 2.2 confirmed) - 212K rev.11
Corrected values, r83 and onward
RGB 255
Grays 0
Mids 0
Blacks 71
Contrast 3
Brightness 0
Saturation 71
Whites 0
Uncorrected values, r83 and onward
Greys 0
Mids 0
Blacks 255
Contrast 255
Brightness 0
Saturation 214
Whites 60
Type O - Obsanity's settings (gamma 2.2 confirmed) - Recommanded settings in Franco's app
Corrected values, r83 and onward
RGB 255
Grays 0
Mids 119
Blacks 119
Contrast 23
Brightness 0
Saturation 119
Whites 103
Type V - VisceralPsyche's settings (gamma 2.2 confirmed)
Corrected values, r83 and onward
R 181
G 167
B 162
Grays 0
Mids 5
Blacks 119
Contrast 1
Brightness 0
Saturation 7
Whites 2
Type C - ceejay83's settings (gamma 2.2 confirmed) rev10
Corrected values, r83 and onward
Rgb 255
Grays 0
Mid 103
Blacks 119
Contrast 0
Brightness 6
Saturation 71
Whites 3
Corrected values
It's the steps values defined in Franco's app v8.8. (Source needed)
steviewevie said:
Obsanity figured out which values are actually valid, and Franco updated the app to reflect that. E.g. old values of 255 actually weren't seen as 255 by that part of the kernel.
Click to expand...
Click to collapse
Uncorrected values
All values
Response format: Gamma results + HW revision + kernel version + lcd_maker_id
DO NOT give us new settings unless none of the provided ones work
FAQ
How do calibration test work in Kernel.Update?
halluci293 said:
The calibration images are, in order:
Black/white levels
- top half shows black checkerboards increasing in steps of two; the lower the number that you can still see the checkerboard, the better black levels you have (I can see 6 at max brightness with my calibration)
- bottom half shows white checkerboards increasing in steps of one; the higher the number that you can still see, the better (I can see 254)
KRGB gamma at 75%/50%/25% luminance going from left to right, top to bottom:
- all squares should blend into their respective borders. The fourth image is a more rigorous gamma test than this one.
Color banding for KRGB:
- all gradients should be smooth even transitions from left to right.
Gamma at every luminance step from 0 to 255: (THIS IS THE ONE WE USE)
- all bars should blend in with the black to white gradients. any color casts you see are deviations from 2.2 gamma.
- the top horizontal strip is 0-255 with the gamma test bars in vertical orientation
- the bottom strips are 0-127, 64-191, and 128-255 luminance steps from left to right respectively
- this also doubles as a banding/gradient test, as the background black to white gradient should transition smoothly everywhere.
Click to expand...
Click to collapse
Misconception about Brightness, it should not change Gamma.
It's true, brightness should not influence gamma. But it's simplistic just to say that, because that's for an image or a perfect screen. Even prosumer monitor are not perfect, the only way to have it almost perfect is to have software to help compensate (custom color profile). The problem is the LCD backlight that changes the saturation, so perceived luminance and gamma changes over the different brightness levels. And no, calibration shouldn't always be done at 100% brightness because most LCD screens have saturation problem at extreme brightness. At the end, calibration brightness should be done where saturation is optimal or, in our case, where the median value is because our screen changes brightness all the time, not like a desktop LCD monitor.
Why 2.2 for gamma? (Obsolete)
dagaetch said:
2.2 is the value you want. As for why, see http://www.cambridgeincolour.com/tutorials/gamma-correction.htm; basically, electronic images are biased a certain way, and gamma correction is intended to remove that bias. since screens are different, you need different settings to correct the appropriate amount to reach 2.2, which apparently became the industry standard at some point.
Click to expand...
Click to collapse
Why 2.2 for RGB only? (Obsolete)
Because our screen is a Red, Green and Blue (RGB) screen. Those 3 additive colors creates all the others displayed. So it has meaning to calibrate them to 2.2 more than greys and let alone Cyan, Magenta and Yellow which are RGB added 2 by 2. But one calibrate grey instead of RGB.
UNDER CONSTRUCTION - please help us!
ian577416 said:
These got me 2.2 gray and 1.8 for red, green, blue and purple. 2.1 for yellow, cyan.
Grays-0
Mids-119
Blacks-119
Contrast-15
Brightness-6
Saturation-119
Whites-119
RGB-255
Hope it helps!
Sent from my Transformer Prime TF201 using Tapatalk 2
Click to expand...
Click to collapse
not mine, just posting I think these are best for Type V screens.
Re: Screen Type: Finding it with Franco's kernel
In the absence of visceralpyche's own verified settings with the new restrictions on what values work properly, this is my conversion of his settings :
R 175
G 155
B 145
Whites 23
Mids 103
Blacks 119
Contrast 0
Brightness 3
Saturation 7
Grays 0
---------- Post added at 04:04 PM ---------- Previous post was at 04:02 PM ----------
Below are the settings that give me close to 2.2 on my screen (rev 10, 212K), originally from ian577416 :
Grays-0
Mids-119
Blacks-119
Contrast-15
Brightness-6
Saturation-119
Whites-119
RGB-255/255/255
---------- Post added at 04:11 PM ---------- Previous post was at 04:04 PM ----------
Obsanity's settings :
Whites 70
Mids 255
Blacks 255
Contrast 0
Brightness 0
Saturation 247
Grays 0
RGB 255/255/255
Sent from my Nexus 4
Hi,
Why not post here: http://forum.xda-developers.com/showthread.php?t=2039607 ?
Francisco kernel, Trinity kernel, Faux kernel, _motley kernel, etc... all is here for colors settings...
dagaetch said:
not mine, just posting I think these are best for Type V screens.
Click to expand...
Click to collapse
I'll answer you here to a post in the franco kernel thread
dagaetch said:
Hmm, I just looked at a few images and didn't notice anything. Have a test pic you can share?
Click to expand...
Click to collapse
This is a photo i took with the phone (rev10)
And this is the same photo as it looks on my display (on auto brightness), i took the photo with a kodak easyshare m575
Despite the not optimal quality, you can clearly see the differences, it's even more evident with the phone in your hands
---------- Post added at 06:31 PM ---------- Previous post was at 06:21 PM ----------
steviewevie said:
In the absence of visceralpyche's own verified settings with the new restrictions on what values work properly, this is my conversion of his settings :
R 175
G 155
B 145
Whites 23
Mids 103
Blacks 119
Contrast 0
Brightness 3
Saturation 7
Grays 0
Click to expand...
Click to collapse
This setup gives me 1.8 gamma, but so far (i've always used visceralpsyche settings) are the best for picture quality for me
Re: Screen Type: Finding it with Franco's kernel
viking37 said:
Hi,
Why not post here: http://forum.xda-developers.com/showthread.php?t=2039607 ?
Francisco kernel, Trinity kernel, Faux kernel, _motley kernel, etc... all is here for colors settings...
Click to expand...
Click to collapse
Because we need a formalized framework. In the other thread, they have all sort of setting for all different kernel and different color presets. It's a mess for what I want to do here. And the OP is not committed to sorting all the different screens saying it's just a standard variation but not different screens. He's maybe right, we will find out.
Sent from my Nexus 4 using xda premium
Re: Screen Type: Finding it with Franco's kernel
Here are the last values I had in my summary thread ( http://forum.xda-developers.com/showthread.php?p=38121827#post38121827), but they might be one Franco.kernel version off. Sorry I'm out on a call at work, can't check.
AMOLED by Kel Ghu (r83)
RGB 255
Grays 0
Mids 64
Blacks 255
Contrast 255
Brightness 0
Saturation 214
Whites 60
AMOLED by obsanity
RGB 255
Whites 45
Mids 255
Blacks 255
Contrast 0
Brightness 0
Saturation 255
Grays 0
"Correct" by Visceralpsyche (r83)
50% brightness
Red 175
Green 170
Blue 165
Whites 20
Mids 20
Blacks 255
Contrast 0
Brightness 3
Saturation 7
Grays 0
- Nexus 4 / PA 3 / Franco r83 -
kaiowas82 said:
I'll answer you here to a post in the franco kernel thread
This is a photo i took with the phone (rev10)
And this is the same photo as it looks on my display (on auto brightness), i took the photo with a kodak easyshare m575
Despite the not optimal quality, you can clearly see the differences, it's even more evident with the phone in your hands
Click to expand...
Click to collapse
Hmm, so I just looked at that picture on my desktop and phone, and I see what you mean. The highlights are a little blown, and the red value seems a bit high. I wonder how much of this we'll be able to fix with individual rgb gamma controls?
Re: Screen Type: Finding it with Franco's kernel
What is this type K, O, and V?
I don't understand
Sent from my Nexus 4 pimped with RootBox and Franco.kernel
elzafir said:
What is this type K, O, and V?
I don't understand
Sent from my Nexus 4 pimped with RootBox and Franco.kernel
Click to expand...
Click to collapse
People are reporting different results with the same display settings, thus leading to a hypothesis that there are (at least) three different screen types on various N4's. The 'type' is just stating which of the three settings provided gives a gamma reading of 2.2 on your screen.
as a complete side note, how have we been talking this long about about gamma readings and I haven't seen a single incredible hulk joke? I'm disappointed in us.
Re: Screen Type: Finding it with Franco's kernel
dagaetch said:
People are reporting different results with the same display settings, thus leading to a hypothesis that there are (at least) three different screen types on various N4's. The 'type' is just stating which of the three settings provided gives a gamma reading of 2.2 on your screen.
as a complete side note, how have we been talking this long about about gamma readings and I haven't seen a single incredible hulk joke? I'm disappointed in us.
Click to expand...
Click to collapse
Thanks.
I tried type K, got 3.0 on grey gamma reading.
It looks really good though!
Gamma reading, do we have to pay attention to the other colors or only gray?
Type O gets me 2.6 on gray.
Default values 1.4 on gray.
Sent from my Nexus 4 pimped with RootBox and Franco.kernel
Re: Screen Type: Finding it with Franco's kernel
Can't get all colors to match 2.2. I can get gray to 2.2 but the rest of the colors are at 1.8
dagaetch said:
People are reporting different results with the same display settings, thus leading to a hypothesis that there are (at least) three different screen types on various N4's. The 'type' is just stating which of the three settings provided gives a gamma reading of 2.2 on your screen.
as a complete side note, how have we been talking this long about about gamma readings and I haven't seen a single incredible hulk joke? I'm disappointed in us.
Click to expand...
Click to collapse
I'm a color setting noob too. So how do I find out the K, V and O? On the box per OP's other post?
Thanks,
wngmv said:
I'm a color setting noob too. So how do I find out the K, V and O? On the box per OP's other post?
Thanks,
Click to expand...
Click to collapse
no, those are just descriptions we've made up as shorthand. You can check the revision of your phone, but mostly it's trying the different color settings and seeing which gives the best gamma value on your phone.
dagaetch said:
no, those are just descriptions we've made up as shorthand. You can check the revision of your phone, but mostly it's trying the different color settings and seeing which gives the best gamma value on your phone.
Click to expand...
Click to collapse
I see thanks! And how do you define the "best" gamma value?
Converted Gamma
Below are some of the popular settings converted to the new values:
From this post:
Here are the most sought converted:
4th Revision/HALFBREED - molesarecoming
rgb 255
whites 0
mids 4
blacks 6
contrast 25
brightness 4
saturation 2
grays 0
slimldj
rgb 255
whites 4
mids 119
blacks 119
contrast 0
brightness 0
saturation 7
grays 0
Spyder2 Express - visceralpsyche
rgb 175
whites 4
mids 4
blacks 119
contrast 0
brightness 0
saturation 0
grays 0
Spyder4 Elite - visceralpsyche
r 175
g 155
b 145
whites 4
mids 4
blacks 119
contrast 0
brightness 3
saturation 7
grays 0
Click to expand...
Click to collapse
I use the Spyder4 visceralpsyche settings and the converted values do indeed perfectly match the previous settings.
wngmv said:
I see thanks! And how do you define the "best" gamma value?
Click to expand...
Click to collapse
2.2 is the value you want. As for why, see http://www.cambridgeincolour.com/tutorials/gamma-correction.htm; basically, electronic images are biased a certain way, and gamma correction is intended to remove that bias. since screens are different, you need different settings to correct the appropriate amount to reach 2.2, which apparently became the industry standard at some point.
Re: Screen Type: Finding it with Franco's kernel
All I need to know in this thread is which provided setting in the op gives you a 2.2 gamma for RED, GREEN and BLUE, not grey. This is because our screen are RGB, those 3 additive colors are the ones creating all the others, so they are the first ones to calibrate.
INFORMATION NEEDED
Type + HW revision + kernel version + corrected or uncorrected values
Corrected values
It's the steps values defined in Franco's app v8.8. (Source needed)
Uncorrected values
All values
Sent from my Nexus 4 using xda premium
Kel Ghu using your values and they are more suited to my taste..ty
Re: Screen Type: Finding it with Franco's kernel
These settings gave me 2.2 rgb. Corrected values, r83, rev10
Rgb 255
Grays 0
Mid 103
Blacks 119
Contrast 0
Brightness 6
Saturation 71
Whites 3
Hello friends!
I'm new here, but I bring a novelty that can cheer us, the owners of the Z1!
It is known that the Doomkernel V11 allows you to calibrate the display of our Z1 and this together with the White Balance, can greatly improve the display quality.
What we need?
1 - Unlocked bootloader
2 - Root
3 - V11 Doomkernel
4 - KitKat
Step 1: Set the White Balance with RGB values to your liking, I use 255 for everything;
Step 2: Install Faux123 or Pimp Z1, so you have access to calibration setting of the display.
Step 3: Set the RGB values in one of the APPs cited above (I prefer the Pimp Z1) to between 70 and a maximum of 150, the choice you prefer
And voila!
The display loses the yellow dye, gets saturated colors and angles of vision far superior!
Sure we lost a bit of the maximum brightness of the display.
Do your tests and come back here to comment!
Thanks all!
(Forgive my bad english!):good:
So without DooMLoRD v11 kernel is not possible the calibrations? Withe Balance only..
eclyptos said:
So without DooMLoRD v11 kernel is not possible the calibrations? Withe Balance only..
Click to expand...
Click to collapse
Exactly! Only the white balance is not sufficient, it is necessary the gamma calibration of the DoomKernel.
Hey guys, don't forget to press thanks!
rafael.jandre said:
Hey guys, don't forget to press thanks!
Click to expand...
Click to collapse
For what?
Paradelle said:
For what?
Click to expand...
Click to collapse
This helped you? Tested? You like? So ...
This is my settings now:
White Balance: Rgb > all 255
Pimp Z1 Color calibration settings:
R: 115
G: 100
B: 126
See images attached
But...... Unlocking the bootloader takes away X reality right?
Sent from my C6903 using Tapatalk
Not anymore! Sony Correct this.
rafael.jandre said:
Not anymore! Sony Correct this.
Click to expand...
Click to collapse
Wow. I didn't know. When did they correct it?
Sent from my C6903 using Tapatalk
slimldj said:
Wow. I didn't know. When did they correct it?
Sent from my C6903 using Tapatalk
Click to expand...
Click to collapse
Read OP http://forum.xda-developers.com/showthread.php?t=2642608
Viewing angles
Wowww...i was previously using 0 0 255 and 229 207 255 in Pimp my Z1.
Now im using 120 120 255 in White balance and 115 100 125 in Pimp my Z1.
just got in amazing increase in viewing angles.....Sony to be blamed for poor display calibration. Now i have one more reason to not to buy Z2
rafael.jandre said:
This is my settings now:
White Balance: Rgb > all 255
Pimp Z1 Color calibration settings:
R: 115
G: 100
B: 126
See images attached
Click to expand...
Click to collapse
These settings dim the screen too much,
You have to crank the brightness up a lot to compensate
raziel123 said:
These settings dim the screen too much,
You have to crank the brightness up a lot to compensate
Click to expand...
Click to collapse
Yeah i found that too when i tried it, i like strong Colors and Bright Display.
rafael.jandre said:
This is my settings now:
White Balance: Rgb > all 255
Pimp Z1 Color calibration settings:
R: 115
G: 100
B: 126
See images attached
Click to expand...
Click to collapse
can u upload your wallpaper please, i want it
Yes, the downside is the dimmed display...but damm! We have a saturated display now!
Wallpapers attached.
pranii23 said:
Wowww...i was previously using 0 0 255 and 229 207 255 in Pimp my Z1.
Now im using 120 120 255 in White balance and 115 100 125 in Pimp my Z1.
just got in amazing increase in viewing angles.....Sony to be blamed for poor display calibration. Now i have one more reason to not to buy Z2
Click to expand...
Click to collapse
Good point man! But if you set de white balance to 255 for all, you'll have some more brightness, wihtout losing the colors and viewing angles! Try it!
Cheers
The Sony's TFT isn't bad at all. It's just a matter of calibration. We have some TFTs in the past like Xperia Ion, Xperia TX and Xperia V, all having good calibrations on the display.
Wow. Unlocking my bootloader right away to do this!
Sent from my C6903 using Tapatalk
Is there a guide that shows how to unlock the bootloader for kitkat? All the guides I've seen are outdated.
Also, is it true that if you unlock the BL the camera quality drops?
I always thought the auto levels on my phone (galaxy nexus) were too low at night or in the dark in general.
I changed mine to the following...Anyone have any tips on better levels? I find this leaves the screen brighter at night, and increments more evenly vs stock and hopefully saves some battery being its not at full brightness until its in super bright sunlight.
0=60
6=60
9=60
14=60
20=60
30=60
46=100
68=100
103=100
154=100
231=130
346=130
519=130
778=130
1168=175
1752=175
2627=210
3941=210
5912=225
8867+=225
ryancell said:
I always thought the auto levels on my phone (galaxy nexus) were too low at night or in the dark in general.
I changed mine to the following...Anyone have any tips on better levels? I find this leaves the screen brighter at night, and increments more evenly vs stock and hopefully saves some battery being its not at full brightness until its in super bright sunlight.
0=60
6=60
9=60
14=60
20=60
30=60
46=100
68=100
103=100
154=100
231=130
346=130
519=130
778=130
1168=175
1752=175
2627=210
3941=210
5912=225
8867+=225
Click to expand...
Click to collapse
how do you get to change these settings? any file that needs to be edited?
ryancell said:
I always thought the auto levels on my phone (galaxy nexus) were too low at night or in the dark in general.
I changed mine to the following...Anyone have any tips on better levels? I find this leaves the screen brighter at night, and increments more evenly vs stock and hopefully saves some battery being its not at full brightness until its in super bright sunlight.
Click to expand...
Click to collapse
I have definitely had to adjust them on all my devices. On my N4(mako)* I turned them way down at low levels and way up at high levels. On my N7(flo) I had to lower them across the board.
There are so many variables: personal preference, the environment in which you use your device, the hardware of your screen, the age of your device (some screens get dimmer as they get older), and the response curve of the lux sensor in your device. Thank science we can customise it.
* if you are curious: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]+
Hi folks, I did some photo tests and I get values that I think give the best result.
Saturation +1
Contrast +0.5
Sharpness -1
Noise reduction +3
Backlight 0
Detail +1
Hank87 said:
Hi folks, I did some photo tests and I get values that I think give the best result.
Saturation +1
Contrast +0.5
Sharpness -1
Noise reduction +3
Backlight 0
Detail +1
Click to expand...
Click to collapse
Is there a way to save that as a custom setting?
I like your settings. I only played with the sharpness as it was the most objectionable thing to me. I took it down to -2 to greatly reduce the black and white borders. If I go to -3 thin black and white things can get colorful.
Edit: Messed with it a bit more. For now, I have saturation 0, contrast 0, sharpness -3, noise reduction +3, backlight 0, detail -3. Not sure what backlight does.
What does backlight do?
PianistOne111 said:
What does backlight do?
Click to expand...
Click to collapse
I'm assuming that's referring to the camera's backlight for darker image capture?
It's a software option to balance the foreground and background light exposures.
PianistOne111 said:
What does backlight do?
Click to expand...
Click to collapse
raynan said:
I'm assuming that's referring to the camera's backlight for darker image capture?
It's a software option to balance the foreground and background light exposures.
Click to expand...
Click to collapse
I don't know what is backlight, i don't see differences if i set to +3 or -3, so i leaved to 0.
I noticed that in the picture with more light we need less sharpness and detail, while is the opposite in the pictures in low light.
Try these values in manual and see
I think I've got it. The backlight optimization lightens dark things when you've got a bright light source somewhere in the frame, like times when you would use a flash. For example, you're taking a picture of someone with an open window behind them. Backlight would make them less dark compared to the window.
PianistOne111 said:
I think I've got it. The backlight optimization lightens dark things when you've got a bright light source somewhere in the frame, like times when you would use a flash. For example, you're taking a picture of someone with an open window behind them. Backlight would make them less dark compared to the window.
Click to expand...
Click to collapse
That is my understanding of it. It is sort of comparable to true HDR as far as the end result, but only requires 1 image to be captured.
Hank87 said:
Hi folks, I did some photo tests and I get values that I think give the best result.
Saturation +1
Contrast +0.5
Sharpness -1
Noise reduction +3
Backlight 0
Detail +1
Click to expand...
Click to collapse
Thanks. Greate job. That's exacty best values to optimize PixelMaster Cam
Sent from Z00A using CM13.0