Ice Bear wasn't sure where to post this thread. Recommend some good KCAL values for the V20, preferably one with little to no screen retention. Perhaps some might want deep blacks and vivid colors while others might want more natural colors. Edit: It might be a good idea to mention whether one is using a stock ROM or a custom ROM. Ice Bear isn't sure if KCAL values have a different effect on stock ROMS vs custom ROMS. Edit: KCAL profiles have been rearranged in alphabetical order and now fall under 2 categories: User KCAL profiles and Kernel Adiutor Mod KCAL profiles.
Thanks to @SupaKid for posting a link to a similar thread.
https://forum.xda-developers.com/v20/themes/kcal-settings-best-display-color-t3653992/page9
Ice Bear went ahead and gathered KCAL values from it. Credits go to the users of said KCAL values.
User KCAL profiles
@helf
Red: 250
Green: 250
Blue: 235
Minimum RGB value: 35
Saturation Intensity: 27
Screen Hue: 1520
Screen Value: 112
Screen Contrast: 132
Ice Bear Natural by @Ice Bear
Red: 240
Green: 240
Blue: 240
Minimum RGB value: 35
Saturation Intensity: 12
Screen Value: 125
Screen Contrast: 130
Screen Hue: 0
@maxi65
Red: 240
Green: 240
Blue: 240
Minimum RGB value: 35
Saturation Intensity: 55
Screen Hue: 1520
Screen Value: 130
Screen Contrast: 127
@mikekote666
Red: 235
Green: 245
Blue: 250
Minimum RGB Value: 30
Saturation Intensity: 40
Screen Hue: 1525
Screen Value: 127-131
Screen Contrast: 127-131
@nkirk
Red: 245
Green: 230
Blue: 215
Minimum RGB value: 0
Saturation Intensity: 35
Screen Hue: 0
Screen Value: 129
Screen Contrast: 129
@phr00t
Red: 256
Green: 256
Blue: 235
Minimum RGB value: 0
Saturation Intensity: 12
Screen Value: 128
Screen Contrast: 128
Kernel Adiutor Mod profiles Thanks to @C D for sharing the KCAL profiles from Kernel Adiutor Mod.
Banged Up as suggested by @Steven87
Red: 239
Green: 243
Blue: 255
Minimum RGB value: 20
Saturation intensity: 53
Screen hue: 10
Screen value: 126
Screen contrast: 136
Deep Black Colorful
Red: 230
Green: 232
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 49
Screen Hue: 0
Screen Value: 119
Screen Contrast: 140
Franco
Red: 232
Green: 237
Blue: 256
Minimum RGB Value: 35
Saturation Intensity: 75
Screen Hue: 0
Screen Value: 127
Screen Contrast: 127
Gerard Extreme Cool
Red: 217
Green: 215
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 125
Screen Contrast: 122
Harley-Tech
Red: 236
Green: 240
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 60
Screen Hue: 0
Screen Value: 112
Screen Contrast: 142
Screen Hue: 0
Obsanity
Red: 245
Green: 245
Blue: 256
Minimum RGB Value: 35
Saturation Intensity: 48
Screen Hue: 0
Screen Value: 127
Screen Contrast: 127
Obsanity IPS
Red: 245
Green: 240
Blue: 256
Minimum RGB Value: 35
Saturation Intensity: 18
Screen Hue: 37
Screen Value: 131
Screen Contrast: 131
Perfection
Red: 237
Green: 235
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 1515
Screen Value: 125
Screen Contrast: 127
Purian
Red: 223
Green: 223
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 46
Screen Hue: 0
Screen Value: 127
Screen Contrast: 127
SimCooler
Red: 240
Green: 245
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 132
Screen Contrast: 127
Sir Banger
Red: 215
Green: 220
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 50
Screen Hue: 13
Screen Value: 124
Screen Contrast: 124
Vomer AccuRich
Red: 230
Green: 232
Blue: 252
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 135
Screen Contrast: 120
Vomer BrightBalance
Red: 230
Green: 232
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 55
Screen Hue: 0
Screen Value: 145
Screen Contrast: 115
Vomer DeepRich
Red: 237
Green: 235
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 50
Screen Hue: 0
Screen Value: 120
Screen Contrast: 115
Vomer IPS
Red: 230
Green: 232
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 125
Screen Contrast: 115
WrinkleFree
Red: 250
Green: 250
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 20
Screen Hue: 1515
Screen Value: 123
Screen Contrast: 128
WrinkleFree Cool
Red: 232
Green: 228
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 26
Screen Hue: 1515
Screen Value: 126
Screen Contrast: 128
Yoyoz808
Red: 220
Green: 230
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 35
Screen Hue: 0
Screen Value: 132
Screen Contrast: 127
I used to be on R:245 G:245 B:245 and it worked just fine but since summer came, retention got worse and I had to drop to R:235 G:235 B:235 instead.
If your panel has kind of a blue tint (mine doesn't) you just lowed the Blue value by 10 compared to the others.
The best way to calibrate your KCAL values is to put your phone right next to another phone that is well calibrated (an iPhone for example) and try to match the colors.
Messaibi said:
I used to be on R:245 G:245 B:245 and it worked just fine but since summer came, retention got worse and I had to drop to R:235 G:235 B:235 instead.
If your panel has kind of a blue tint (mine doesn't) you just lowed the Blue value by 10 compared to the others.
The best way to calibrate your KCAL values is to put your phone right next to another phone that is well calibrated (an iPhone for example) and try to match the colors.
Click to expand...
Click to collapse
Wonderful tip for those trying to calibrate their V20 screen like the iPhone's screen.
SupaKid remembers this thread from long ago!
Custom KCAL Values to Limit Ghosting and Screen Retention
SupaKid said:
SupaKid remembers this thread from long ago!
Custom KCAL Values to Limit Ghosting and Screen Retention
Click to expand...
Click to collapse
Wow, Ice Bear saw a few different KCAL values posted on the thread you shared. Thanks for sharing! Perhaps Ice Bear shall edit the first post and include those people's settings as well as crediting them.
Can I use live display to bring rid of ghosting without kernel auditor under "kcal" call is off?
CrUxXxX said:
Can I use live display to bring rid of ghosting without kernel auditor under "kcal" call is off?
Click to expand...
Click to collapse
Ice Bear says yes. It does have color adjustment and picture adjustment after all, which is practically KCAL.
I use banged up profile on kernel adiutor mod, no retention or ghosting, looks wonderful feels like I have an amoled display.
Steven87 said:
I use banged up profile on kernel adiutor mod, no retention or ghosting, looks wonderful feels like I have an amoled display.
Click to expand...
Click to collapse
Would Steven87 post the values for the banged up profile?
Banged up profile:
Red:239
Green:243
Blue:255
Minimum rgb value:20
Saturation intensity:53
Screen hue:10
Screen value:126
Screen contrast:136
I hope ice bear likes it!
SupaKid said:
SupaKid remembers this thread from long ago!
Custom KCAL Values to Limit Ghosting and Screen Retention
Click to expand...
Click to collapse
I was wondering where this thread went. Thanks. I used the first one as it was the closest colors to an iphone screen. I just need to reduce the RGB 10 points lower because I still had ghosting.
Steven87 said:
Banged up profile:
Red:239
Green:243
Blue:255
Minimum rgb value:20
Saturation intensity:53
Screen hue:10
Screen value:126
Screen contrast:136
I hope ice bear likes it!
Click to expand...
Click to collapse
Great profile for those wanting a Super AMOLED look!
R:235
G:245
B:250
Minimum RGB Value:30
Saturation Intensity:40
Screen Hue:1525
Screen Value:127-131
Screen Contrast:127-131
More To stock color without screen ghosting?
I'm experimenting with the below setup in Oreo, thought of sharing for others to try out. This time colour temperature corrected with the use of the adjustable comfort view option.
What I tried doing was to match primary colours with a Samsung J series amoled device with AMOLED Photo profile enabled.
It came out close enough I thought, nowhere perfect. Wish kcal offered individual hue control per color channel.
If you are used to the super blue tint this setting will take some time getting used to. Also note each panel will have some variance in color response as well.
Ps- no screen ? ing
tech_infinity is thankful to ice bear for such a useful post!
tech_infinity said:
tech_infinity is thankful to ice bear for such a useful post!
Click to expand...
Click to collapse
No problem! Ice Bear got the idea to post this thread after searching for a KCAL thread for the V20, but Ice Bear failed to find such a thread. Ice Bear was interested in the idea of other users sharing their KCAL values. There's quite a variety here.
I use maxi65's values as listed in the OP and this thread from a while ago and never had a problem with screen retention on my LS997 ZV7 (old stock-based custom ROM, Android 7.0) and US996 USA (old LineageOS-based custom ROM, Android 7.1). I'm not too picky about colors, so I've never bothered to change the values. The Kernel Adiutor Mod app that I use does have quite a number of preset values that could be interesting (see attached images). Some of them have been mentioned in here and in SupaKid's linked thread. If anyone is interested in seeing the numbers for some or all of the profiles, I'll be happy to post them.
C D said:
I use maxi65's values as listed in the OP and this thread from a while ago and never had a problem with screen retention on my LS997 ZV7 (old stock-based custom ROM, Android 7.0) and US996 USA (old LineageOS-based custom ROM, Android 7.1). I'm not too picky about colors, so I've never bothered to change the values. The Kernel Adiutor Mod app that I use does have quite a number of preset values that could be interesting (see attached images). Some of them have been mentioned in here and in SupaKid's linked thread. If anyone is interested in seeing the numbers for some or all of the profiles, I'll be happy to post them.
Click to expand...
Click to collapse
That would be a wonderful idea. Ice Bear could even post the profiles to the OP.
Ice Bear said:
That would be a wonderful idea. Ice Bear could even post the profiles to the OP.
Click to expand...
Click to collapse
Very well, then. Here they are. Note that the Banged Up profile has a slightly different Minimum RGB Value from the one Steven87 posted. I have also put all of them, including the Stock values, in an attached Excel spreadsheet for side-by-side comparisons.
Vomer BrightBalance
Red: 230
Green: 232
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 55
Screen Hue: 0
Screen Value: 145
Screen Contrast: 115
Click to expand...
Click to collapse
Vomer IPS
Red: 230
Green: 232
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 125
Screen Contrast: 115
Click to expand...
Click to collapse
Vomer AccuRich
Red: 230
Green: 232
Blue: 252
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 135
Screen Contrast: 120
Click to expand...
Click to collapse
Vomer DeepRich
Red: 237
Green: 235
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 50
Screen Hue: 0
Screen Value: 120
Screen Contrast: 115
Click to expand...
Click to collapse
WrinkleFree
Red: 250
Green: 250
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 20
Screen Hue: 1515
Screen Value: 123
Screen Contrast: 128
Click to expand...
Click to collapse
WrinkleFree Cool
Red: 232
Green: 228
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 26
Screen Hue: 1515
Screen Value: 126
Screen Contrast: 128
Click to expand...
Click to collapse
Deep Black Colorful
Red: 230
Green: 232
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 49
Screen Hue: 0
Screen Value: 119
Screen Contrast: 140
Click to expand...
Click to collapse
Sir Banger
Red: 215
Green: 220
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 50
Screen Hue: 13
Screen Value: 124
Screen Contrast: 124
Click to expand...
Click to collapse
Purian
Red: 223
Green: 223
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 46
Screen Hue: 0
Screen Value: 127
Screen Contrast: 127
Click to expand...
Click to collapse
Franco
Red: 232
Green: 237
Blue: 256
Minimum RGB Value: 35
Saturation Intensity: 75
Screen Hue: 0
Screen Value: 127
Screen Contrast: 127
Click to expand...
Click to collapse
Harley-Tech
Red: 236
Green: 240
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 60
Screen Hue: 0
Screen Value: 112
Screen Contrast: 142
Click to expand...
Click to collapse
Banged Up
Red: 239
Green: 243
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 53
Screen Hue: 10
Screen Value: 126
Screen Contrast: 136
Click to expand...
Click to collapse
SimCooler
Red: 240
Green: 245
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 132
Screen Contrast: 127
Click to expand...
Click to collapse
Obsanity
Red: 245
Green: 245
Blue: 256
Minimum RGB Value: 35
Saturation Intensity: 48
Screen Hue: 0
Screen Value: 127
Screen Contrast: 127
Click to expand...
Click to collapse
Obsanity IPS
Red: 245
Green: 240
Blue: 256
Minimum RGB Value: 35
Saturation Intensity: 18
Screen Hue: 37
Screen Value: 131
Screen Contrast: 131
Click to expand...
Click to collapse
yoyoz808
Red: 220
Green: 230
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 35
Screen Hue: 0
Screen Value: 132
Screen Contrast: 127
Click to expand...
Click to collapse
Perfection
Red: 237
Green: 235
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 1515
Screen Value: 125
Screen Contrast: 127
Click to expand...
Click to collapse
Gerard Extreme Cool
Red: 217
Green: 215
Blue: 255
Minimum RGB Value: 35
Saturation Intensity: 40
Screen Hue: 0
Screen Value: 125
Screen Contrast: 122
Click to expand...
Click to collapse
By the way, these profiles were posted years ago in this thread, although I found slightly different Screen Hue values for the SimCooler and Obsanity profiles.
C D said:
Very well, then. Here they are. Note that the Banged Up profile has a slightly different Minimum RGB Value from the one Steven87 posted. I have also put all of them, including the Stock values, in an attached Excel spreadsheet for side-by-side comparisons.
Vomer BrightBalance
Vomer IPS
Vomer AccuRich
Vomer DeepRich
WrinkleFree
WrinkleFree Cool
Deep Black Colorful
Sir Banger
Purian
Franco
Harley-Tech
Banged Up
SimCooler
Obsanity
Obsanity IPS
yoyoz808
Perfection
Gerard Extreme Cool
By the way, these profiles were posted years ago in this thread, although I found slightly different Screen Hue values for the SimCooler and Obsanity profiles.
Click to expand...
Click to collapse
Ice Bear has went ahead and posted the KCAL profiles to the OP.
Related
And I mean in terms of square inches? I for the life of me can't find height and width of 3.5 inch and 4.3 inch screens.
I suspect, even though diagonally, it is only .8 inch longer, the surface area could be as much as 50% more.
someone pls do the maths.
Well, your guess is pretty much spot on. Assuming same aspect ratio between screens, the 4.3 inch has 51% more real estate than the 3.5 inch.
4.3 / 3.5 = 1.23 (scale factor)
1.23 squared gives you the surface area scale factor = 1.51, or as a percentage, 51% larger.
The GS II has a 2.2" x 3.7" screen giving it an area of 8.14 square inches.
A 3.5" diagonal screen could have an area of nearly 8.9 square inches if it were square, or 3.35 square inches if it were 3.35" tall and 1" wide. You can't calculate the area of a theoretical screen with the diagonal measurement alone.
Its all theory in practice its just a bit bigger as is the phone compared to SGS 1 side by side or held .
jje
((4.3 * ((4.3 / 800) * 480)) / 3.5) / ((3.5 / 800) * 480) = 1.50938776
so it's 50,9% larger
iPhone 4 (3.5 in):
326 ppi
960 height, 2.94 in
640 width, 1.96 in
5.76 square in
Galaxy S II (4.27 in):
218 ppi
800 height, 3.67 in
480 width, 2.20 in
8.07 square in
8.07 / 5.76 x 100 = 140
i.e. The Galaxy S II's screen has 40% more area.
kcaz said:
The GS II has a 2.2" x 3.7" screen giving it an area of 8.14 square inches.
A 3.5" diagonal screen could have an area of nearly 8.9 square inches if it were square, or 3.35 square inches if it were 3.35" tall and 1" wide. You can't calculate the area of a theoretical screen with the diagonal measurement alone.
Click to expand...
Click to collapse
+1 diagonal "length" is a poor predictor for screen area. This gave me a huge headache shopping for monitors, some 24" screens turned out "smaller" than 23" ones.
Why can't I take pictures in 16:9 when I have the resolution set at 3264:2448?
Sent from my GT-I9100 using XDA Premium App
hmm...anyone?
The reason why you can't get 16:9 ratio is because 3264:2448 is 4:3 ratio.
(Try dividing by the GCM = 816 and you'll get 4:3)
Aspect ratio is the ratio of the horizontal pixels to the vertical pixels; this means the aspect ratio is directly related, and it's not possible to change the aspect ratio without changing the total horizontal to vertical pixel count.
kohiiou said:
The reason why you can't get 16:9 ratio is because 3264:2448 is 4:3 ratio.
(Try dividing by the GCM = 816 and you'll get 4:3)
Aspect ratio is the ratio of the horizontal pixels to the vertical pixels; this means the aspect ratio is directly related, and it's not possible to change the aspect ratio without changing the total horizontal to vertical pixel count.
Click to expand...
Click to collapse
But I can change to 16:9 ratio with my brothers desire hd in 3264:2448 resolution.
Sent from my GT-I9100 using XDA Premium App
Maybe you should read these:
http://en.wikipedia.org/wiki/Display_resolution
http://en.wikipedia.org/wiki/Aspect_ratio_(image)
And it is 5:3 (or 15:9) instead of 16:9 EDIT: 16:9 would be little wider. But becaus Samsung have 800x480 resolution, 5:3 will be max that you can go.
8M: 3264/2448=1.3333 = 4:3 (aspect ratio)
W6.5M: 3264/1968 = 1.65853659 ~1.66 (15:9 = 5:3)
And because samsung have 800x480 resolution wich means: 800/480 = 1.66666667 = 15:9 = 5:3
So W6.5M means that you now use full screen.
Yufina said:
Maybe you should read these:
http://en.wikipedia.org/wiki/Display_resolution
http://en.wikipedia.org/wiki/Aspect_ratio_(image)
And it is 5:3 (or 15:9) instead of 16:9 EDIT: 16:9 would be little wider. But becaus Samsung have 800x480 resolution, 5:3 will be max that you can go.
8M: 3264/2448=1.3333 = 4:3 (aspect ratio)
W6.5M: 3264/1968 = 1.65853659 ~1.66 (15:9 = 5:3)
And because samsung have 800x480 resolution wich means: 800/480 = 1.66666667 = 15:9 = 5:3
So W6.5M means that you now use full screen.
Click to expand...
Click to collapse
just to be clear, the W6.5M and 8M doesn't stand for megapixels, right?
Nope. Those are megapixels. As you can see:
3264*2448 = 7 990 272 ~8Megapixels
3264*1968 = 6 423 552 ~6.5Megapixel
Also more Megapixels dosen't always mean better camera or image
EDIT: Also I think that W means "Wide" so you can be sure that those will use 5:3 aspect ratio (or just full screen) instead of 4:3.
Yufina said:
Nope. Those are megapixels. As you can see:
3264*2448 = 7 990 272 ~8Megapixels
3264*1968 = 6 423 552 ~6.5Megapixel
Also more Megapixels dosen't always mean better camera or image
Click to expand...
Click to collapse
ah ok, thanks I'm gonna use W6.5M as i cant stand 4:3, I just hope that there wont be much difference between the 6.5 and 8 megapixels.
I also hate 4:3, because it's sound as old-fashoned as it is . And today everything are so wide. But as for 6.5M, I think that max print size will be ~11 x 6.5″, so i think it will be enought (at least for me).
EDIT: if you want 300dpi print
Just divine by dpi:
3264/300= 10.88 inches
1968/300= 6.56 inches
You don't want to give your significant other yet another reason to yell at you while you're reading XDA in bed. Rate this thread to express what you think of the Xiaomi Redmi Note 4's display minimum dimness. A higher rating indicates that the display can get extremely dim, ideal for reading in very dark environments.
Then, drop a comment if you have anything to add!
Superb low brightness in night time
Blind at daytime...
Super dim when set to slowest
Half of display have another level of brightness at minimum.
Very satisfied. But of course, there is always room for improvement.
I am on custom ROM, RR-mido. I think the brightness should still be able to further reduce. I mean night mode is there. But still
Personally, I use Lux auto for my auto brightness
My settings
Day
1 = 4%
56 = 15%
375 = 30%
5000 = 100%
Night
1 = -25%
1000 = 30%
Envoyé de mon Redmi Note 4 en utilisant Tapatalk
Link of the app please? There are many with that name
Dean27 said:
Link of the app please? There are many with that name
Click to expand...
Click to collapse
Free
https://play.google.com/store/apps/details?id=com.vitocassisi.luxlite
Paid
https://play.google.com/store/apps/details?id=com.vito.lux
How can I put it so that it resembles nougat or 50% oreo?
Hello. I did a little research and decided to share it with the community. Please confirm or deny my investigation. Perhaps I missed something or misunderstood.
This review point to high pixel response times:
Poco X3 NFC smartphone - Equipment champion in the mid-range
The Poxo X3 NFC offers a Snapdragon 732G, 6 GB of RAM, 64/128 GB storage, microSD support, an audio port, an IR blaster, Bluetooth 5.1, fast LTE, and a powerful 5160 mAh battery for little money.
www.notebookcheck.net
Black to White24.4 ms (rise and fall)50% Grey to 80% Grey44.4 ms (rise and fall)
This means that the display will have time to fully display (pixels have time to completely change color) approximately 23-42 fps.
fps = 1000 ms / 24 or 35 ms
But already at 60 Hz, each frame will have time to be displayed by about 49-71% (this is how far the pixels have time to change color).
Code:
100% = 24 or 35 ms
X% = 17 ms (1000 ms / 60 frames)
And at 120 Hz, respectively 23-33%.
In simple terms, scrolling black text on a white background at 120 Hz, each frame has time to be drawn only by ~30%. Therefore, instead of black text on each frame, we see a smeared gray trail. And we get a motion blur effect.
Display motion blur - Wikipedia
en.m.wikipedia.org
Are my conclusions correct and is the POCO X3 NFC screen really that slow? Because I actually see a lot of blur at 120 Hz in dynamic scenes (the scrolled text is actually unreadable), but I don't have the equipment to confirm my calculations.
Feedback to the screen of my device for statistics
Model: dsi_nt36672c_huaxing_fhd_video_display
The trails are visible only when scrolling text or other contrasting dynamic scenes.
There is uneven backlighting along the edges (especially at the bottom), but if you look at the screen strictly perpendicularly, it is invisible, even on a white background, the darkening is clearly visible only at the bottom.
There is no purple tint around the edges of the screen, as in some reviews, just a dark/gray gradient.
There is no need for equipments, You can notice this clearly when pages on dark and text white you will see noisy blur effect
I don't know if it hardware or software matter
Hi, with only 400 nits to play with at max brightness this screen was a major disapointment to me in sunlight especially as I use it with my drone, is there any way to eak any more brightness out of this, slider is on max.