Hi ,
I have noticed a problem in blue light filter in apps available in market.
They ask for permission for drawing over apps. And the effect they produce is not similar to reducing blue color but putting a yellow/brownish layer, which makes black look brownish. When compared to the bluelight filter option given in the ROM itself , there is noticeable difference. The color doesnot look washed out. Black is still black. And the sharpness is maintained. Only thing is it lowers blue light emission from screen.
I have Samsung Galaxy Note 4 with Marshmallow and it doesnot have inbuilt bluelight filter. I want to stay with same ROM but am ready to root device if some application can actually modify contrast. I have heard that screen resolution can be modified with adb so i am ready to experiment color correction through that as well.
Hoping for a early reply,
Thanks
Ankit
Related
I'm colourblind and I have a bit of a problem working out good settings for the camera.
My main problem is that if I take a picture of something light, one of my pets for example (mainly white in colour) it shows the pet as glowing bright white against the normal coloured background - making the detail impossible to make out on the animal.
I've had a go at fiddling with the brightness and contrast but I can't really tell what effect each of them has so I have made no progress.
What settings do you all use on the camera? Is there a setup which should overcome my problem with things being overwhelmingly white?
I think the camera is just plain awful and I avoid using it as much as possible
Is it possible to change somehow the tint of luminescence display? Make it more warm or cold. Display in my SGS has a very cold shade, a lot of blue. I would like to add a little red to align white.
It's a characteristic of AMOLED screen. As you use it longer, the blue tint will start reducing.
Though that doesn't change the fact that the possibility to change or affect white point and/or gamma of the display would sometimes come quite handy. The color temperature of Galaxy's display is indeed quite high, yet it is so good picture-wise that this becomes an issue (ie. when viewing photos).
Just open any movie with the stock video player. Go to Settings and then Colour Tone. It will affect the whole system.you have 3 options warmer, normal and colder. Hope this will help
Sent from my GT-I9000 using XDA App
That's a great tip, thanks! Even though it's most likely just a bug
So you obviously can alter the display's color temperature system wide somehow. I wonder if this could be made into an app with customizable warmth settings... Too bad I'm not a programmer...
And speaking of the devil...
http://forum.xda-developers.com/showthread.php?t=745248
Case_ said:
That's a great tip, thanks! Even though it's most likely just a bug
So you obviously can alter the display's color temperature system wide somehow. I wonder if this could be made into an app with customizable warmth settings... Too bad I'm not a programmer...
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Where did i you find it? When I play video created by camera in default player I don't see there any setting or color tone setup...
Luiz. said:
Where did i you find it? When I play video created by camera in default player I don't see there any setting or color tone setup...
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Menu - settings - 3º option
It appears blank on my phone, but leads you to temperature settings
The screen has a blue reflection when off. I also tested it playing the same video on the phone and on my laptop (300 nits LED screen) and the video on the phone was defintely more green-blue.
This is more noticeable on low brightness setting, try it on Kindle app, test settings, you have a slider for brightness. You'll see how low brightness leads to a blue-green tint, not neutral gray.
if some one could could develop an app for the sgs that does this i would pay.
settings menu is only available if you start the videoplayer app and select a video to play within.
if you start a video from the gallery, there is no option
exstarosta said:
Just open any movie with the stock video player. Go to Settings and then Colour Tone. It will affect the whole system.you have 3 options warmer, normal and colder. Hope this will help
Sent from my GT-I9000 using XDA App
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Click to collapse
Is the galaxy s i9000 different in this respect from the samsung vibrant. My vibrant does allow me to adjust color tone in the video player, but IT DOES NOT change the color tone of the WHOLE SYSTEM. Once I exit out of the player, everything is back to blue. Also the warm tone in the video player looks fake, just applies red on top of the blue, looks weird.
I know there are several ways to tweak the color settings on the Nexus 4 if you use certain kernels, including the RGB 0-255 values and contrast settings through apps such as the paid version of the Franco.kernel updater. I've fooled around with these a bit, and I like the contrast settings but usually roll back to defaults because they are noticeably dimmer than defaults, which is likely to make me turn up the brightness and use more battery. What I'm wondering is if there's a way to remove all color from the display and use a black and white rendering instead? It isn't out of any necessity, I'm just curious and sometimes like reading certain things in B&W because unnecessary colors in ads or UI elements can be distracting. Any suggestions or advice would be appreciated. Thanks.
Is there a way to adjust the color temperature of the screen to a more natural white? I have tried the few screen modes in the settings but the Cinema one is still not very natural to me.
Is there an xposed framework mod or Rom that can do this?
Thanks.
I'm looking for it too. Tried some screen adjusters apps but the result wasn't really good as they just apply a filter layer above. I was used to my Note 2 color temperature wich is pretty higher than the 6500k reference resulting in a colder white. The Note 4 display in fact is more acurate, but I found it too warm for me. Whites seem a little pink to my taste. Wish I could raise the value, but I guess we must wait for a custom kernel with this capability.
One quick tip that might help.
Go into accessibility visual settings. Do the thing with the color adjustment and intentionally get them wrong. then move the slider almost all the way to the left.
You will no longer get to modify the adapt dispaly photo mode settings... but it will give a color temp somewhere in between.
you can alwyas set a triple click to shortcut to accessibility to disable it.
Oh thanks! Still not perfect but quite better this way. And without need of dirty kernel tricks.
I think the note 4 screen is too warm.
Is there any solution to make it cooler?
antichoice said:
I think the note 4 screen is too warm.
Is there any solution to make it cooler?
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Just compare it to screen of Note 3, and you will not want it anymore :cyclops: It is much more warmer!
I don't have the option to do that by the way
There are 2 methods for blue light filtering:
Apps that recalibrate the display via KCAL. These require root access and usually give better results in terms of color reproduction because they can adjust backlight (for LCDs) and gamma. Not all displays support recalibration, though, and some ROMs may not have KCAL support built in. Recommended: Night Light
Apps that draw a darkening overlay. Root access is required to draw over the status bar, hide the overlay on screenshots and keep sensitive tasks (like confirming an app installation) working when the filter is active. Works well especially on OLED displays. Mildly reduces color quality because less than 256 steps of brightness will be available for the color channels you dim. Recommended: Red Moon
There is no harm in trying either app, they are both open source. They don't apply permanent changes so you can just uninstall them if you have issues. Check if you can add the app to drop-down system shortcuts for convenient control.
Václav Trpišovský said:
There are 2 methods for blue light filtering:
Apps that recalibrate the display via KCAL. These require root access and usually give better results in terms of color reproduction because they can adjust backlight (for LCDs) and gamma. Not all displays support recalibration, though, and some ROMs may not have KCAL support built in. Recommended: Night Light
Apps that draw a darkening overlay. Root access is required to draw over the status bar, hide the overlay on screenshots and keep sensitive tasks (like confirming an app installation) working when the filter is active. Works well especially on OLED displays. Mildly reduces color quality because less than 256 steps of brightness will be available for the color channels you dim. Recommended: Red Moon
There is no harm in trying either app, they are both open source. They don't apply permanent changes so you can just uninstall them if you have issues. Check if you can add the app to drop-down system shortcuts for convenient control.
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Click to collapse
thanks