Low video framerate on rear camera when using manual exposure controls - Xiaomi Mi Note 2 Questions & Answers

When using manual exposure controls for video capture (through setting `CaptureRequest.CONTROL_AE_MODE` to `CaptureRequest.CONTROL_AE_MODE_OFF`), the best framerate that could be achieved is 19F/s, no matter what exposure time or sensor sensitivity is used. when auto exposure is on (`CaptureRequest.CONTROL_AE_MODE_ON`), it gets all the way up to 30F/s in good lighting conditions.
I assume it has to do with the vendor blob for the rear camera, since it doesn't happen with the front camera, and that blob seems to be quite problematic as seen here for example. Seems like they just rushed it then worked around any problems in MIUI (considering the stock camera app doesn't even provide manual controls for video).
Is there anything to be done about it?

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Xperia Z camera video quality and HDR

So i took a vid with my Z in an indoor enviroment and whilst it does have detail, smoothness it comes at the price of huge noise.
now i know this is a smartphone, but my previous phone, an HTC One S, did excellent shots even in indoor and poor light conditions.
i believe one answer to this might be the fact that HDR is hardcoded in staying on at all times. i believe this messes up with the exposure values and eases noise to make way in the vid.
i tried tinkering with the settings, best i found was to put exposure at -2 and iso at 100/200 but still the noise persisted.
do you have any tips/tricks to improve low light video?
Warmo said:
So i took a vid with my Z in an indoor enviroment and whilst it does have detail, smoothness it comes at the price of huge noise.
now i know this is a smartphone, but my previous phone, an HTC One S, did excellent shots even in indoor and poor light conditions.
i believe one answer to this might be the fact that HDR is hardcoded in staying on at all times. i believe this messes up with the exposure values and eases noise to make way in the vid.
i tried tinkering with the settings, best i found was to put exposure at -2 and iso at 100/200 but still the noise persisted.
do you have any tips/tricks to improve low light video?
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Do you have any proof to show HDR is enabled at all times? I'm finding it a bit hard to believe that HDR which is supposed to get more accurate colour intensities can let noise enter the video. I would say that compression is a more likely culprit than that, given that you tweaked the settings and still got noise. What say you?
Warmo said:
So i took a vid with my Z in an indoor enviroment and whilst it does have detail, smoothness it comes at the price of huge noise.
now i know this is a smartphone, but my previous phone, an HTC One S, did excellent shots even in indoor and poor light conditions.
i believe one answer to this might be the fact that HDR is hardcoded in staying on at all times. i believe this messes up with the exposure values and eases noise to make way in the vid.
i tried tinkering with the settings, best i found was to put exposure at -2 and iso at 100/200 but still the noise persisted.
do you have any tips/tricks to improve low light video?
Click to expand...
Click to collapse
I disagree with HDR being always on. I tested it with similar condition HDR off and on. HDR which looks like more exposure and is tweaked for low light videos. However the Noise is due to HDR failing to focus faster. In simple words HDR takes time to focus but give better results if your hand is firm and the video is slow mo. however you can uncheck HDR and change other settings like ISO and exposure you can get better results. (Video)
coolrevi said:
I disagree with HDR being always on. I tested it with similar condition HDR off and on. HDR which looks like more exposure and is tweaked for low light videos. However the Noise is due to HDR failing to focus faster. In simple words HDR takes time to focus but give better results if your hand is firm and the video is slow mo. however you can uncheck HDR and change other settings like ISO and exposure you can get better results. (Video)
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"The new Sony Xperia Z flagship boasts a feature no other phone can brag with, and it is High Dynamic Range capture, but not only for still photography, but in videos as well.
The option is hardwired with the new Exmor RS sensor of Sony."
that last phrase is not exactly absolutely clear, but i assume that if it says "hardwired" it means "hardcoded" so to speak, and usually hardcoded means that it cannot be modified in anyway.
also, everytime i shoot a video i get the HDR tag right next to the timer on bottom-left side of the screen. and that little HDR tag remains even if i turn off the HDR function when in Photo mode.
i might be wrong of course and HDR can be disabled.
If HDR can be disabled please tell me how! I would really appreciate it!
coolrevi said:
I disagree with HDR being always on. I tested it with similar condition HDR off and on. HDR which looks like more exposure and is tweaked for low light videos. However the Noise is due to HDR failing to focus faster. In simple words HDR takes time to focus but give better results if your hand is firm and the video is slow mo. however you can uncheck HDR and change other settings like ISO and exposure you can get better results. (Video)
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It's simple. Open camera, video camera, hdr off, you can clearly make out that hdr is off as it reduces the color boost and exposure.
Sent from my C6502 using xda app-developers app

Camera slow shutter speed

I know the camera issue has been beat to death already but I've been testing it for many days and would like to relay my results. A lot of people are saying that the auto focus is bad causing blurry pictures. This is false, the focus works great but the camera always chooses a shutter speed that's to low for the lighting causing blur on subjects in motion. The only way I can get the shutter speed over 1/20 is by taking a picture in bright light. Even in above average lighting conditions the shutter will go to 1/20 or below. There is no option for metering so I wonder if LG coded something wrong in the camera drivers. I have tried every camera program out there and they all take the exact same picture using the same to low shutter speed which tells me it's not the stock camera app. I don't have the skill to dive into the programming but that is where the problem seems to be. It's the same brand (Sony) camera sensor as the SGS4 so I know that it's not the sensors fault.
Any thoughts?
Sent from my LG-D803 using xda app-developers app
Anybody else have any ideas?
I'm also seeing these ridiculous shutter speeds (1/14, 1/20) when shooting in low light indoors, even if picking Sport mode, and was looking for a discussion on the topic here. Happy to find it
I had almost given up getting the camera to do what I wanted, when I discovered that the Intelligent Auto feature actually sometimes is ... intelligent. I took 4 photos of my toddler - obviously, not a subject willing to sit still. All photos on intelligent auto.
For two of the photos, the software shot with ISO 700 and 1/15th shutter, pretty much what Normal does every time. But - the other two were taken with ISO 1400-1/30 and ISO 1500-1/30. Naturally, the latter two were a lot sharper.
This is incredibly annoying since the Normal mode only lets you manually pick max ISO 800 and gives no shutter speed control. Until I found out about this intelligent auto thing, I forced -1, -1 1/3 stops underexposure to make the camera use a faster shutter (it typically used 1/59 for some reason). Now I guess I will take 5-6 pics every time and hope the camera is indeed intelligent part of the time.
- Is there no custom camera app capable of setting shutter speed manually, and use the ISO settings available to Intelligent Auto?
- Noone's had any word from LG on this?
I will be contacting LG support about this as well, but wanted to get the XDA word on the matter first...
Cheers, Are
Just replying to say I'm having the same issue. The fastest shutter speed I've seen is 1/15 in a well lit, easy to focus shot. The vast majority of my shots are blurry as a result.
I'm running Cyanogenmod at the moment.
I'm having pretty bad shutter speeds as well. It take 2 seconds to take a well-lit picture.
Guys , Try out the Moto X camera app. I may be wrong but i think its a bit faster .
JasElS said:
I'm having pretty bad shutter speeds as well. It take 2 seconds to take a well-lit picture.
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farazafs said:
Guys , Try out the Moto X camera app. I may be wrong but i think its a bit faster .
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I'm not talking about how long it takes to take the picture, that's delay. I'm talking shutter speed, how long the shutter stays open allowing light to hit the sensor.
I have not had any big problems with this, most of my shots are pretty tack sharp, and seem to have some decent shutterspeeds.. Only in very poor light I do get 1/15 shutterspeeds but at pretty average lights I get 1/30-1/120 sometimes faster, but mostly 1/40..
My shutterdelay is almist nothing too..
I found a modified version of the stock LG G2 camera by sefnap that works with CM 10.2 M1 and produces much better results: http://forum.xda-developers.com/showthread.php?t=2522889
Some of the features don't work but overall it's vastly better than the camera included with CM.
There is also another modified version of the stock camera put up by Heatshiver that probably works even better but it doesn't currently work with CM (only works with stock and some AOSP ROMs): http://forum.xda-developers.com/showthread.php?t=2525783
I just discovered something the other day when playing with my camera... Albeit in bright light. Check out these pics taken at 60mph from my car while I was driving (ie not the most steady hand).
What I did was set it on sports mode and then old down the camera button until I heard the beep, and then released to capture the image I wanted (ie the road signs). The one out of my car window was actually more focused than I could focus with my naked eye...

[Q] Camera mod to allow long exposure times?

Could be possible to develop a camera mod in order to allow using custom long exposure times with the camera?
In low light photography, if you want a minimun quality, you need a low ISO level and a long exposure time (holding the phone somewhere, using a tripod, etc). Since slowest shutter speed in Note 3 is 1/15s, it's actually too fast for night photos, so it could be good to break this limitation and use slower shutter speeds...
With my old Xperia Z, I got some tricks very good for low light, as using night scene (1/2s exposure time), or even fireworks scene (1s exposure time). These scenes allowed me to use low ISO levels and the detail level was amazing.
I perfectly know apps like Camera fv-5, night camera and some other stuff, and this is NOT what I mean. In camera fv-5, you are just "capturng" the screen streaming for a long time, so the resolution is very low (2mpx max), and if the scene is dark, there is no difference (you won't get a brighter scene). In Night Camera (or the night mode in A Better Camera), the phone takes some pictures and merges them (like an HDR), so it's not what I'm asking for either.
I think it's neccessary a real MOD which changes the samsung camera libs or something like that. I'm not a developer (just a photography enthusiastic) and I don't know if it could be possible, but I definitely would love it
Pd: sorry for my English.
Nobody?
Enviado desde mi SM-N9005 mediante Tapatalk
You mean FV5 doesnt really take long shutter mode photos?
nakulp said:
You mean FV5 doesnt really take long shutter mode photos?
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Exactly, camera fv-5 simply takes the real time info which is giving to the screen from the sensor (2mpx) for the time you want to, and merges it in a photo. This is not a real long exposure pic. Dark areas will remain dark and noisy due to high iso level and the "real" shutting speed, although this mode could be useful for light painting or nightrail shots...
Searching for this answer for quite some time now .. anyone has any mods / hacks ?

Alternative App that makes best quality photos

Hi there,
As everyone knows, default camera app of sony sucks. I have tried a lot of alternative applications. For me the best results is from Snap Camera with settings 20mpx, camera api2, jpeg quality Best, opengl2, auto scene auto whitebalance, auto flash. These settings allows me to take much sharper images tested on my small facial hair. BUT! Camera is very overheating, after few minutes (5-6 shots) i have started sony camera and it alerted that camera is too hot, so it shuts down.
Snap camera allows HDR in 20mpx also any scene, its not limited as sony-s camera
Also snap camera produced the best images on my old low quality mtk based phone. So i recommend it, its paid but as far i know it have trial version.
I will be happy if someone will tell how is satisfied with this app.
PS.: FV-5 is worse, for my eyes.
in the play store info, there is setting for ISO. but why is there non when i check in setting...?
ive taken some kick ass photos in good light/ low light / bad light with the stock app. IDK what everyone is on about. but to each their own =)
`Ghost` said:
ive taken some kick ass photos in good light/ low light / bad light with the stock app. IDK what everyone is on about. but to each their own =)
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In Auto mode or Manual?
Both.
Basically, when you unlock your boot loader, the great photo quality will be gone. If you have backed up your "TRIMM area" before unlocking it (where the DRM keys are stored), then you'll be able to get it back, by re-locking the BL, but this means you'll lose your ability to use costom ROMs, only modified stock ROMs are possible after that.
The reason for this is that Sony uses some pretty amazing software magic to get great pictures in low light (noise reduction algorithms) which aren't meant to be accessible for others to reverse engineer, so they lock them away with the DRM keys. So with a locked boot loader, the camera makes awesome pictures even in low light, with an unlocked BL, meh... (not so much any more)
Of course, these algorithms are only available to the Sony default camera app for the same reasons...
Have you tried this
It will let you have scene's and HDR in 20mp, also it has more ISO options.
I've used FV-5 from the start and imo it's a lot better for me then the stock app. I can't work with the stock app that has limited control
Sent from my D5803 using XDA Free mobile app
stock camera is the only one...'cause of manual iso... fv-5 has good auto but you can't force iso 100, 200 and so on
Recently I have the Z3 Compact therefore not yet tried everything, but the camera does not seem anywhere near what they sold me in reviews. The original camera seems poor choices, the automatic mode leaves much to be desired, especially in low light because when you have a lighthouse in front can not interpret well and properly handle white balance and contrast.
I was testing the Open Camera app and gives me better results than stock. The only thing I use it now for the stock camera is for timeshift and sometimes for panoramic shots.
I have almost forgot about this post, thanks for cleaning my bookmarks.
Thanks for everyone’s reply, I have figured out that another phones also uses that sensor and they make better pics, so probably problem is with sony's software developers who are doing a weak job. I am very addicted to zooming pictures and when I compare zoomed 5mpx downscale shot of lumia 1020 and 8 or 20mpx shot of Z3C, then shot of lumia is sharp and clear, full of details.... the shot of sony is like blurred and without details. So i think that they algorithm is wrong somewhere or they are compressing raw to too low quality and when jpeg is created then its final quality will be even worse regardless of 97% or 100% jpeg quality. Need to note that nokia's sensor is three times bigger in its physical size that captures the light.
But the video quality is epic i have never seen so good video quality from phone.
Currently i am waiting for availability of 5.1.1 in slovakia

Oneplus 2 recording low FPS in low and artificial light conditions Oxygen 2.1.1

I have reverted back to stock OS since I prefer how the camera pictures result there. However, I have noticed that the video recording in the stock camera has a disappointing low FPS in lowlight and artificial light when recording. But when I use other camera apps such as google camera or cameranext, the fps recording is decent but the exposure is very low, and the video output has a narrow field of view.
Is there a fix for this problem for the stock OS? Or is this a software problem in Oneplus' end?

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