KCAL settings for best display color and contrast and also get rid of ghosting

[helf]

Hola!

OK, at some point I will finally update the calib.cfg file again. But for now here are the settings I am using with a KCAL enabled kernel to remove ghosting from my screen as well as drasically improve contrast and colors.

I use Kernel Adiutor:


-------------------------
Under 'screen' section >

Screen Color (This kills the ghosting a lot of users are experiencing as well as removes the blue tinge the screen has):
Red = 250
Green = 250
Blue = 235

Minimum RGB value = 35

Saturation Intensity = 27

Screen Hue = 1520

Screen Value = 112

Screen Contrast = 132

---------------------

I have been running it for awhile and it looks fantastic and I have not had anymore ghosting. It also makes the screen look similar to my Note Edge when I first got it. Contrast is improved a LOT. Colors are better. They are not over saturated. Very close to natural. Whites are white and not blue (at least on my display) etc.

Please let me know your results.

-helf

 

[shadavis08]

Works good here!

 

[dudeawsome]

any way to change these values without root as I updated to the new tmobile update and atm there is no root method

 

[helf]

any way to change these values without root as I updated to the new tmobile update and atm there is no root method

I don't think so, no. These require a kernel with KCAL integrated. You can kinda adjust the screen values without root by going into settings > general > accessibility > vision > screen color adjustment > manual

But that's about the best you can do beyond nonroot screen filter overlay like cflumens supports etc

 

[fossiltkm]

Thanks Helf. with this tweak, the display looks great!

 

[jcsx]

by ghosting you mean image retention right? if that is the case, well this is awesome! Thanks

 

[Paapa]

A little bit over 15 hrs and no ghosting. My only beef is how the blues look but it's a good configuration overall, easy on the eyes.

 

[helf]

A little bit over 15 hrs and no ghosting. My only beef is how the blues look but it's a good configuration overall, easy on the eyes.

How do the blues look? I need to put the phone with a color calibrator and check it. Mine look pretty close to natural when I eye ball it. I'll keep working on it

 

[Paapa]

How do the blues look? I need to put the phone with a color calibrator and check it. Mine look pretty close to natural when I eye ball it. I'll keep working on it

You're doing a great service for us all. Blue's and greens come off slightly dull like they could use a little saturation but if it's at the cost of prevent the ghosting effect i understand.

 

[helf]

You're doing a great service for us all. Blue's and greens come off slightly dull like they could use a little saturation but if it's at the cost of prevent the ghosting effect i understand.

hm. The colors in general are probably a little duller. The vibrancy and contrast and all is usually cranked up on phones Samsung is especially awful about it. People like the 'pop' though. I just compared several shades of blue and greens with the screen at max brightness using the camera app, the colors are almost dead on to my eyes. Granted i have to manually drop the ISO a couple notches because the phone wants to automatically crank it too high (like true-to-life brightness/colors around my work desk it wants to use an ISO of 600 and ISO 200 was real world accurate. heh).

 

[askermk2000]

How do the blues look? I need to put the phone with a color calibrator and check it. Mine look pretty close to natural when I eye ball it. I'll keep working on it

You have spectrophotometer? I would love to see some values to use, but wouldn't it be different between devices? No panel is exactly the same, or?
I seem to remember that being reiterated quite a lot on various display discussions I've followed in the past.

 

[helf]

You have spectrophotometer? I would love to see some values to use, but wouldn't it be different between devices? No panel is exactly the same, or?
I seem to remember that being reiterated quite a lot on various display discussions I've followed in the past.[/QUOTES]

Yeah. I don't have a fancy one. It's old but works lol.

There is a variance between panels but it's not as severe as it has been in the past.

 

[bond32]

Been trying these settings for a while, personally I really like them. Thanks Op!

Anyone else have any settings to try?

 

[rick09]

Do you use these settings along with Comfort View? Or do you leave the Comfort View setting turned off?

Sent from my LG V20 using XDA Labs

 

[helf]

You have spectrophotometer? I would love to see some values to use, but wouldn't it be different between devices? No panel is exactly the same, or?
I seem to remember that being reiterated quite a lot on various display discussions I've followed in the past.

Do you use these settings along with Comfort View? Or do you leave the Comfort View setting turned off?

Sent from my LG V20 using XDA Labs

I use it with CF.lumen.

I don't use comfort view. If you enable it with my settings on you'll have a really yellow display.

 

[KUSOsan]

Be sweet if there was a way to get kcal with stock kernel. I do get the image retention on mine pretty bad sometimes

 

[helf]

Be sweet if there was a way to get kcal with stock kernel. I do get the image retention on mine pretty bad sometimes

Try this out : https://forum.xda-developers.com/g4...d-configure-post-processing-settings-t3165247

I haven't yet. I am curious if it'll work.

 

[storm68]

Just tried on h918 it doesn't work.

 

[KUSOsan]

Try this out : https://forum.xda-developers.com/g4...d-configure-post-processing-settings-t3165247

I haven't yet. I am curious if it'll work.

Just tried it as well on H918 running WETA with stock kernel and it installed and activated properly but nothing changed. Tried a few different configs and reboots just to see but nothing. Thanks for the share though. It'd be just what I'm looking for if can get to work

 

[rick09]

Is there any chance applying these changes would cause auto brightness to stop working? Possibly it's coincidence, but I changed my screen settings to exactly how it was in the OP, and since then I've noticed auto brightness no longer works on my phone? I don't see how making these changes would cause that but I figured I'd ask here to be sure, or to see if anyone else has the same problem.

Sent from my LG V20 using XDA Labs