Disable Automatic or Positive Camera Exposure System-wide? - Nexus 6 Q&A, Help & Troubleshooting

I'm convinced that camera performance in all cases can be nice and smooth if I disable or lower exposure. I'm aware I can use different camera apps and change the setting from there, but this has no effect on anything else that uses the camera (Pokemon GO, barcode scanners, etc).
Is there some kind of kernel option or build.prop setting, or anything of the sort that can be changed to get rid of exposure, or maybe all camera post-processing entirely?

Not without completely rewriting the camera's firmware or drivers, which are at a lower level than the kernel.

Related

[Q] Camera flash output / brightness in ICS

Is there a way to modify / lower camera flash brightness (output) in ICS?
When taking photos in darker environment, flash 'burns' the photo i.e. colors are washed out and photo is overexposed. I also noticed when the flash is activated during focusing, its brightness is normal.
As far as I remember, this was not the case in GB based ROMs (in which I always used ported stock LG camera app).
I've yet to try out alternative camera apps (zoom fx, ucam...), but I'd like to stick to the stock LG software.
TIA
same problem here,but i used Jbcamera+ for taking pictures (it has great autofocus and the flash is ok) and camerazoomfx for video recording,(the stock one not focusing and the jbcamera+) because the stock camera is bit annoying for me
I havent used the lg stock camera but as you have said the photos are over exposed when using flash so isnt there an option to decrease the exposure? I use the 4.2 Camera and when taking night shots depending on how close the target I set exposure to -1/-2 and get decent low light shots, flash wise that is.
Well, there is exposure compensation on stock camera app, just haven't thought of that before. Will try tonight both camera JB from play store and LG's app with exp -1 and -2.
Thanks.
vEget7 said:
same problem here,but i used Jbcamera+ for taking pictures (it has great autofocus and the flash is ok) and camerazoomfx for video recording,(the stock one not focusing and the jbcamera+) because the stock camera is bit annoying for me
Click to expand...
Click to collapse
I thought camerazoom fx only took photos?
Yes, the exposure is way too high. Generally the photos are affected by the flash burns. The only solution i found was to decrease the exposure to -1 or -2.
OK, much better with exposure at -1 and -2 (depending on the surrounding light level).
I just wish LG camera app were a bit more 'intelligent' to figure exposure compensation on its own, but then again it would probably have to rely on some DSLR-like metering methods that would certainly double the size of camera/CCD (and the bulge where it sits) as well as its price...
If this were top priority to me, I'd probably be carrying a 'stupidphone' with an enormous camera at its back (nokia 808, anyone

[Q] Samsung Galaxy Camera; control surface to directly control the camera

HELP.
I am stuck with Samsung Galaxy Camera. In need of getting trough changing of the display, optimizing it and controlling camera with that changed surface. (make interactive sliders for all this options below. and make them work.)
ISO sensitivity, exposure value, aperture, shutter speed, image resolution, OIS function, display guide lines
How can I improve the detection of key features by optimizing camera settings?
What are the optimal camera settings for a variety of weather/ illumination conditions?
I have to use eclipse and openCV. Any ideas where to start? What to do?! Btw, I WOULD PAY for someones guidance.
Anyone?
:crying:

[Q] External Camera apps supporting manual ISO for Z1? (Many not working)

I do like the Z1 a lot, including the camera but in manual mode I find it a bit cumbersome to go into the menu to set ISO values and all so I was looking for custom camera apps which allow me to access this more directly, only to find out they don't work (properly) on the Z1.
So far I tried:
Lenovo Super Camera: Allows you to set the iso, but simply ignores the value set
Camera FV-5: Same as above
Focal: Can't find an option to set ISO
ProCapture: No manual ISO control (Will be in a next release, but device miight not be supported)
Pudding Camera; No manual ISO control
Camera360: "Your device does not support this" message
Camera ZoomFX: No manual ISO control
So I'm afraid it will be impossible for third party apps to control the ISO values. Which wouldn't be too bad if I could access the setting more directly in the native camera app.
Anyone with tips or tricks for this?
dagrim1 said:
I do like the Z1 a lot, including the camera but in manual mode I find it a bit cumbersome to go into the menu to set ISO values and all so I was looking for custom camera apps which allow me to access this more directly, only to find out they don't work (properly) on the Z1.
So far I tried:
Lenovo Super Camera: Allows you to set the iso, but simply ignores the value set
Camera FV-5: Same as above
Focal: Can't find an option to set ISO
ProCapture: No manual ISO control (Will be in a next release, but device miight not be supported)
Pudding Camera; No manual ISO control
Camera360: "Your device does not support this" message
Camera ZoomFX: No manual ISO control
So I'm afraid it will be impossible for third party apps to control the ISO values. Which wouldn't be too bad if I could access the setting more directly in the native camera app.
Anyone with tips or tricks for this?
Click to expand...
Click to collapse
would also interest me actually
I'd like too, but Sony locks APIs to set ISO without the stock app
It's incredible but true

Changing camera auto-exposure?

So as we all know, the Nexus 6 camera sucks in low light compared to just about every other phone on the market. I played with L Camera (camera app that uses Lollipop's new camera API's) and played with the exposure and ISO settings and was able to get very good quality pictures with minimal noise. This makes me believe that the hardware is capable of alot better low-light performance, but on the software side of things, the "default" auto-exposure setting is set too low. Is there any way to change this?
I'm able to get okay results using HDR+, but on apps like Snapchat where there is no control over anything, low-light pics are abysmal.

Camera Apps Can Tune Sharpening, Noise Reduction?

I'm considering buying the Nokia 8 but would first prefer to know whether or not the phone allows third party camera apps like Camera FV-5 or Snap Camera HDR to tune sharpening and noise reduction, or altogether switch these off.
Any Nokia 8 owners who have tried this and can tell if this works or not?
You can use any camera app you like
Thanks. I am sure that is true.
My question is specific. If I install a camera app that allows tuning post processing (sharpening and noise reduction), will this work on the Nokia 8?
Not all phone makers expose these controls in the camera APIs.
For example, Samsung's Galaxy phones equipped with Exynos chips does not permit tuning post processing while their SnapDragon models do this.
abubasim said:
My question is specific. If I install a camera app that allows tuning post processing (sharpening and noise reduction), will this work on the Nokia 8?
Click to expand...
Click to collapse
I have both Camera FV-5 and Manual Camera so I could check if such options are there if you tell me where to look as I don't recall seeing something like that in their preferences (I had Nexus 6P previously).
Thanks. I'll check when I reach home in a few hours.
revanmj said:
I have both Camera FV-5 and Manual Camera so I could check if such options are there if you tell me where to look as I don't recall seeing something like that in their preferences (I had Nexus 6P previously).
Click to expand...
Click to collapse
You can check in Camera FV-5. See my screenshots where to find sharpening. If you take a photo first before adjusting and then after with sharpening set to minimum: will you see difference in quality, when zooming in to 100% ?
abubasim said:
If you take a photo first before adjusting and then after with sharpening set to minimum: will you see difference in quality, when zooming in to 100% ?
Click to expand...
Click to collapse
Well, it is by default set to 0 here (all sliders in this window are) so I would have to manually change it to higher value in order to do any comparison.
Okay, thanks. So probably doesn't work then. I guess I need to consider other phones. ?
On my current phone (Asus PFS) it's set to almost zero but adjusting it has no effect on picture quality.
Ok, when I tried to move that slider it turned out it is impossible. So that fully answers your question
Just find an app that takes RAW images and use that. Then adjust said parameters to your heart’s content
I'd rather buy another phone that supports this.
If you have Camera2 API enabled in your phone, try Snap Camera - you can tune everything here. Just enable Camera2 API in the settings, then the noise is preserved. Adjustable sharpness, saturation etc... The only option missing here for me is long exposure mode. On my Redmi 4X it allows only 1" shutter time max (still I can get nice night pictures on ISO 250 with this interval).
Also, you can try FreeDCam and disable Wavelet Denoise in the settings to turn off noise reduction.
Finally, Google Camera port is really great camera app for daily usage, especially for HDR pictures - it uses Camera2 API by default and produces amazing shots with all details (subtle noise) preserved. Unfortunately, you can't adjust any of parameters like sharpness or saturation.
All those apps are tested on my Xiaomi Redmi 4x but it will hopefully work for you if your phone supports Camera2 API.
So you tested on a Xiaomi Redmi 4x but haven't tested on a Nokia 8?
Those features are very much dependant on whether or not the phone supports them. And no way of knowing without buying the phone and testing and then finding out the good or bad news.
So far the hints from previous posters above is that the Nokia 8 does NOT support full control over post processing.

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