Dual camera not work properly in this phone :( - Xiaomi Mi A2 / 6X Guides, News, & Discussion

I tried in bad light and good light. With HDR, with night settings, nothing changed. Only manual setting allow to choose second lens 20mpx and give better light.
How do I know ?
I made picture on auto mode in described situations. One photo with covered ultrapixel lens by my finger, and second without finger on lens. No differences. Photos looks the same. Maybe software is broken. Now second lens is not used...
Maybe in 6X work better?

Yes, it's the same here.
I saw that the app is not saving the original photo

Same here (both problems). I think we need a SW update for this to be fixed.
I also find it frustrating that I can't set the resolution of the photo.
Also, the front facing camera can do [email protected] using Open Camera, but the stock camera app doesn't allow it.
These things should be submitted via the feedback app, but I don't have a Xiaomi account and don't want to create one.

It's my first Xiaomi and I'm disappointed with the camera, It does not deliver what it promises

Obviously the 2nd camera (20mp) is being used! Nevermind the subject...just a quick shot, but if you look at the info the pic is 20.1 MP which is the secondary camera used for depth and low light. And this was taken in quite a dark room.
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Should not this photo use the 20 megapixel lens?
---------- Post added at 04:08 AM ---------- Previous post was at 04:05 AM ----------
20mp only in manual mode.

stopthetime said:
Should not this photo use the 20 megapixel lens?
Click to expand...
Click to collapse
Maybe it is being used only when you manualy choose HHT option in stock camera, on three dots in right corner.

videotape74 said:
Obviously the 2nd camera (20mp) is being used! Nevermind the subject...just a quick shot, but if you look at the info the pic is 20.1 MP which is the secondary camera used for depth and low light. And this was taken in quite a dark room.
Click to expand...
Click to collapse
Do you remember which camera settings this shot was set to? I mean was it 'photo' and 'hht'? Or maybe the 'manual' with low light lens selected?
I guess we're still trying to figure out how this app is 'suppose' to work, as we don't know if it's doing as it should or not!
But for sure, there are some great capabilities here, I took this indoors (last night), after the sept update, very realistic colors and awesome details.

The 20mp sensor is used for depth and for low light only. Switch to portrait mode and it will use the 20mp sensor because it is measuring and capturing depth. In low light it uses it to measure the pixels then transforms 4 pixels into 1 for a cleaner image. It is then output as a 12mp image.
The pic I took was using portrait mode.

here's the reason.
This will only be available in the future. Maybe Android p?

videotape74 said:
The 20mp sensor is used for depth and for low light only. Switch to portrait mode and it will use the 20mp sensor because it is measuring and capturing depth. In low light it uses it to measure the pixels then transforms 4 pixels into 1 for a cleaner image. It is then output as a 12mp image.
The pic I took was using portrait mode.
Click to expand...
Click to collapse
So 20/4 is 12?

Benjamin_L said:
So 20/4 is 12?
Click to expand...
Click to collapse
It is not 20/4, it is the pixel count and it's not a division.

videotape74 said:
It is not 20/4, it is the pixel count and it's not a division.
Click to expand...
Click to collapse
How would you bin then? Each four pixels make up a huge new "pixel". Of course this is a division by four..

I had issue when trying to take photo in landscape orientation and in low light. I tried several times and every time photo was blurry. In portrait orientation (not mode) picture was just fine. My hand was not shaky. It was with august fw. Ill try tonight same scene with September update. Don't know if anyone else noticed this...

Benjamin_L said:
So 20/4 is 12?
Click to expand...
Click to collapse
Benjamin_L said:
How would you bin then? Each four pixels make up a huge new "pixel". Of course this is a division by four..
Click to expand...
Click to collapse
I'm not here for a math debate, I'm simply trying to explain how the cameras work...
"The 20MP module also has 4-to-1 pixel binning to reduce noise levels in low-light shots, with the camera essentially combining information from four pixels into one to create a more detailed image."

videotape74 said:
I'm not here for a math debate, I'm simply trying to explain how the cameras work...
"The 20MP module also has 4-to-1 pixel binning to reduce noise levels in low-light shots, with the camera essentially combining information from four pixels into one to create a more detailed image."
Click to expand...
Click to collapse
Yes but the resulting pixel count will be of course 5MP hence 4 to 1..

Benjamin_L said:
Yes but the resulting pixel count will be of course 5MP
Click to expand...
Click to collapse
Seriously...just shut up.

videotape74 said:
Seriously...just shut up.
Click to expand...
Click to collapse
At least I know what I am talking about. What else should 4 to one mean in your opinion?

Benjamin_L said:
Yes but the resulting pixel count will be of course 5MP hence 4 to 1..
Click to expand...
Click to collapse
Benjamin_L said:
At least I know what I am talking about. What else should 4 to one mean in your opinion?
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Click to collapse
People like you ruin this community. At least I'm contributing something useful to the conversation in trying to explain the cameras and how they are used. And just so you know, I'm a photographer and downsampling isn't the same as your brilliant theory of 20/4. Have a nice day.

videotape74 said:
People like you ruin this community. At least I'm contributing something useful to the conversation in trying to explain the cameras and how they are used. And just so you know, I'm a photographer and downsampling isn't the same as your brilliant theory of 20/4. Have a nice day.
Click to expand...
Click to collapse
Stop being personal. A 4 to 1 pixel binning will result in a 5MP image when starting from 20. How this will be upsampled and combined with the 12MP sensor one is not what I am talking about and obviously is not happening anyway right now. So what's your point if your explanation is obviously wrong?

Related

Photos & video with Desire HD-video update-

http://www.iouppo.com/lite/pic/93c9ada2ad4d20f983f3269bdb10c7c9.jpg
http://www.iouppo.com/lite/pic/96d317dc32e75853bb8d9418736807de.jpg
http://www.iouppo.com/lite/pic/15c6e2c354905a9300da277dc6326ec5.jpg
http://www.iouppo.com/lite/pic/fa4fb57af7c61c23e5831db6ac39f6b7.jpg
What do you think?
faby71 said:
http://www.iouppo.com/lite/pic/93c9a...9bdb10c7c9.jpg
http://www.iouppo.com/lite/pic/96d31...18736807de.jpg
http://www.iouppo.com/lite/pic/fa4fb57af7c61c23e5831db6ac39f6b7.jpg
http://www.iouppo.com/lite/pic/15c6e...7dc6326ec5.jpg
What do you think?
Click to expand...
Click to collapse
I think your links don't work.
Yes... File not Found is all I get too.
Beards said:
Yes... File not Found is all I get too.
Click to expand...
Click to collapse
Link update
faby71 said:
Link update
Click to expand...
Click to collapse
No... Still showing file not found.
Beards said:
No... Still showing file not found.
Click to expand...
Click to collapse
Link 1° post work!!!
faby71 said:
Link 1° post work!!!
Click to expand...
Click to collapse
Where did you bought it?
Wow, very nice!
xazac said:
Where did you bought it?
Click to expand...
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swiss
faby71 said:
swiss
Click to expand...
Click to collapse
Ah, so bad! xD
Soooo much noise and artifact in those shots, resolved detail not very good either.
That said, looks like HTCs best camera ever (apart from perhaps the Mozart with its Xenon Flash, but I haven't seen many examples from that handset yet).
I think that mobile phones' cameras are not for the ones who are obsessed with photo quality.
I am sure long years I will prefer to carry a DSLR camera even though I have got a 8 mp camera integrated phone.
i agree buying a phone based on its camera is silly, the only time i have ever used my phone camera was when i got a parking ticket so i took photos of the signage and my car wrote a letter to the council and got off without having to pay
if i know im going to take photos i just take my DSLR
NZtechfreak said:
Soooo much noise and artifact in those shots, resolved detail not very good either.
That said, looks like HTCs best camera ever (apart from perhaps the Mozart with its Xenon Flash, but I haven't seen many examples from that handset yet).
Click to expand...
Click to collapse
Yes, I agree.
However, what I am finding is the DHD does not leave much EXIF data.
Below is what is missing when shown in PhotoMe which is shown on the SGS:-
Under Overview
Aperture
Exposure Time
Program Mode
Flash Mode
Metering Mode
White Balance
Under Image
Orientation of Image
Software Firmware
Under Thumbnail view
Nothing. There's no section!
Under Camera
Exposure Time
F-Stop
Exposure Program
Shutter Speed
Aperture
Brightness
Exposure Bias
Maximum Lens Aperture
Metering Mode
Light Source
Flash Details
Manufacturer Notes
Sensing Method
Scene Type
Exposure Mode
White Balance
Digital Zoom Ratio
Focal Length in 35mm Film
Scene Capture Type
Contrast
Saturation
Sharpness
eozen81 said:
I think that mobile phones' cameras are not for the ones who are obsessed with photo quality.
I am sure long years I will prefer to carry a DSLR camera even though I have got a 8 mp camera integrated phone.
Click to expand...
Click to collapse
Nice
More photos..............
Any chance in taking an evening shot (sunset/sunrise) without flash.
Also if possible another two low light shots with and without flash (basically the same shot for comparison on how well the camera handles low lighting with & without a flash).
Cheers.
Ouch those shots are really poor in terms of quality, noise, too strong noisereduction, chromatic abberation and hell everything.
I'm afraid Nokia N8 wins this round.
/ Magnus
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Pepsi anyone!??
Sent from my Desire HD using XDA App
eozen81 said:
I think that mobile phones' cameras are not for the ones who are obsessed with photo quality.
I am sure long years I will prefer to carry a DSLR camera even though I have got a 8 mp camera integrated phone.
Click to expand...
Click to collapse
You don't need to be obsessed with photo quality to demand more from your mobile phone camera than the Desire HD is offering though. For many of us the camera is quite an important consideration because day to day photography with our phones is part of our regular use (most of us don't carry a DSLR all the time, eh?). Its nice to have shots that are 'good enough' for that kind of casual photography, and many other non-HTC phones offer that.
I won't, and haven't ever, based a decision to buy a phone solely on the camera, but certainly its a consideration, more important for some of us than others (but you can't dictate to others how they come to a decision to get a phone or not).

Share Your Camera Images/Settings.

I've been playing around with the camera today and got a few interesting results. So I've created this thread so that we can post and share our pictures and settings used to achieve them. I feel this would be good for people who perhaps are not familiar with our cameras settings and would like to get better shots.
I think our SGS2s camera can achieve some fantastic results
Please post your favourite shot and the settings you used below
Here is mine to start off.
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Settings:
-White Balance; Sunlight.
-Metering; Matrix
-ISO auto or 100 (I think, forgot)
holy CRAP that's nice... i'll try to take some later =D
What resolution is that? the Max setting also?
My first macro shot with the SGSII, results were better than expected!
I believe everything was pretty much set to auto, except focus.
I should have some more lying around.
Nice shot
Whenever I point the phone to my dog, he thinks it's something like a gun so he runs away.
Can you tell me what's diffirent between metering : spot, matrix...?
Here in Spain it's ice-cream time
I always shoot in min ISO, so ISO 100. Both in macro mode.
Another macro shot (also ISO 100):
wow! amazing shots!!! very sharp and nice DOF
OMG wow.... Ok i will post some soon.
trungdaika said:
Can you tell me what's diffirent between metering : spot, matrix...?
Click to expand...
Click to collapse
There is centre-weighted, Spot and matrix metering.
These options take readings from the image which adjusts exposure to the image being produced according to the light intensities.
Centre- weighed towards the centre and averaged throughout the rest of the scene
Spot- the camera will only measure a very small area of the centre spot, useful when there is a relatively small object within your scene which you need to be perfectly exposed.
Matrix - takes reading from split areas of the scene to calculate the best exposure and sets it according to an average.
...I think
It's all a bit complicated to be honest, well for me it is, I'm just a beginner.
computermilk said:
holy CRAP that's nice... i'll try to take some later =D
What resolution is that? the Max setting also?
Click to expand...
Click to collapse
Highest res and Image quality, 3264x2448 (8MP)
A few more of mine:
This more of a spur of the moment shot, I just wanted to test how it would look!
And finally one to test how good the flash would be in pitch black:
PyroCF said:
A few more of mine:
This more of a spur of the moment shot, I just wanted to test how it would look!
And finally one to test how good the flash would be in pitch black:
Click to expand...
Click to collapse
give that angry bird toy to me or i will kill u. the results of the flash seems excellent. thanks a lot buddy
dave2 said:
Matrix - takes reading from split areas of the scene to calculate the best exposure and sets it according to an average.
...I think
It's all a bit complicated to be honest, well for me it is, I'm just a beginner.
Click to expand...
Click to collapse
matrix mode does not take "split areas" (it might just be a language issue however), it splits the images into a matrix (a table if you prefer) and finds out the best exposure for each point in the matrix.
this usually fixes up expose problems and while i didnt test the matrix implementation of the sgs2 im surprised it doesn't default to it, in theory, it should make all those overexposed pics ppl take on smartphones look "mostly" fine
centered will not, and you always notice it when the lighting is not correct, with the burned out / over exposed edges
Lots of nice cars.
Centre weighted, ISO 40. Really happy with the camera.
Im interested in this thing: lock exposure after focusing. e.g. SE X10 and other sony ericssons are capable to lock exposure after phone camera focus on object. Then you can move phone to other position and fullpress to take picture...this is very good when dificult light conditions...THX for answer
bilboa1 said:
matrix mode does not take "split areas" (it might just be a language issue however), it splits the images into a matrix (a table if you prefer) and finds out the best exposure for each point in the matrix.
this usually fixes up expose problems and while i didnt test the matrix implementation of the sgs2 im surprised it doesn't default to it, in theory, it should make all those overexposed pics ppl take on smartphones look "mostly" fine
centered will not, and you always notice it when the lighting is not correct, with the burned out / over exposed edges
Click to expand...
Click to collapse
thanks for clearing that up
Sent from my GT-I9100 using XDA App
rob_h said:
Lots of nice cars.
Centre weighted, ISO 40. Really happy with the camera.
Click to expand...
Click to collapse
iso 40?? how can you choose 40? iso 100 is the lowest on mine
Just in case others haven't noticed, there is a Camera firmware update available. Don't ask me where I found it but it was in the "Samsung Apps" app somewhere! I have no idea what it improves either (if anything).
Mine
I've been to Amsterdam lately ..
Sent from my GT-I9100 using XDA Premium App
Extremely amazing .. no need to buy a cam

How to get a better low light picture

Just found out how to make good low light pictures with some changes in camera settings.
The settings are :
Manual mode
change the EV to +1.0
flash on
HDR off
Here are 2 pictures to show the differences:
Superior auto:
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Settings above:
-This settings are exceptional when you shoot near objects,like people,pictures in the room..
-Try it yourself and report.
-Thank me if you find this thread helpful.
C6603 ?
Night scene does a decent job taking low light pictures. Better than superior auto.
If you reduce the resolution for some reason helps make better low light pics.
DrKrFfXx said:
Night scene does a decent job taking low light pictures. Better than superior auto.
If you reduce the resolution for some reason helps make better low light pics.
Click to expand...
Click to collapse
Not better than my settings, try it yourself.
Night scene:
C6603 ?
I can't seem to find "Contrast" settings?
Do you mean Exposure Value (EV)?
Sorry for that,yes it's EV.
I will fix that in the post
C6603 ?
Look stop asking for a perfect photo in complete darknes. Yes Lumias illuminate a room in an bizzare way, but that is so artifitial. The point of LOW LIGHT is that when there IS SOME LIGHT the phone captures SOME MORE DETAIL. It's not meant to be a night vision feature. LOW LIGHT - even in the name it indicates that there has to be some light.
And with the recent updates it takes relly good lowlights in superior auto.
Sidd_9 said:
Look stop asking for a perfect photo in complete darknes. Yes Lumias illuminate a room in an bizzare way, but that is so artifitial. The point of LOW LIGHT is that when there IS SOME LIGHT the phone captures SOME MORE DETAIL. It's not meant to be a night vision feature. LOW LIGHT - even in the name it indicates that there has to be some light.
And with the recent updates it takes relly good lowlights in superior auto.
Click to expand...
Click to collapse
Nobody's asking for a perfect photo. He's just sharing what what he found that is taking good photos in low light.
Sent from my C6603
@Sidd_9 Okey,but the 'Low light' is bad at superior mode,and night scene is nothing better.
C6603 ?
it really depends on what you classify as a "better" low light photo.
OPs photo is one that is lit up brightly with the flash, and looks like you have the light in the room turned on.
But others may want a photo which shows the ambience of the scene in low light, and have a more evenly exposed photo albeit it being a bit darker overall.
End of the day, depends on what you are trying to capture in your photo.
If you can hold it still, use fireworks mode:
electric0ant said:
it really depends on what you classify as a "better" low light photo.
OPs photo is one that is lit up brightly with the flash, and looks like you have the light in the room turned on.
But others may want a photo which shows the ambience of the scene in low light, and have a more evenly exposed photo albeit it being a bit darker overall.
End of the day, depends on what you are trying to capture in your photo.
Click to expand...
Click to collapse
If u want to make a photo for examp. to your friends. They will be dark and hard to see with superior mode.
I just hate that. It's more detailed and more light with this manual settings like with an S4 or HTC One.
C6603 ?
DoubleYouPee said:
If you can hold it still, use fireworks mode:
Click to expand...
Click to collapse
You think I didn't tried it?
C6603 ?
svaka cas majstore
sent from moa G-Nex7
How bout shooting friends at night? Any sample +settings?
-sent from that phone below
you may limit the ISO, to 400 or 800 with EV+1
Noise will greatly reduced, but you must hold steady too...
boyq said:
How bout shooting friends at night? Any sample +settings?
-sent from that phone below
Click to expand...
Click to collapse
A gun with a laser sight
Thanks to the OP I tried this with my ZR and it works a treat.
Sent from my C5503 using xda app-developers app
Starlith said:
Thanks to the OP I tried this with my ZR and it works a treat.
Sent from my C5503 using xda app-developers app
Click to expand...
Click to collapse
Np
Tried something else,the pictures are better at night with superior mode when you shoot landscapes.
So, this settings are only for near objects,like people,pictures in the room..
C6603 ?
beni8978 said:
Np
Tried something else,the pictures are better at night with superior mode when you shoot landscapes.
So, this settings are only for near objects,like people,pictures in the room..
C6603 ?
Click to expand...
Click to collapse
Night portrait and night works good too for me.
Sent from my C6603
For landscapes, yes
C6603 ?

Disgusting sharpening

The first thing I noticed when using the camera on this phone was how the images looked over processed. Most notably, I did a digital zoom photo yesterday and the sharpening on it was disgusting. It didn't even look like a photo.
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See what I mean? All I did was zoom in and take a photo. It looks horrible.
Look at this picture for example
Even just zoomed in a bit you can see way too much sharpening going on
Now I know this phone is a "budget phone" but it supposedly has the same lens as the Galaxy S7 so that isn't really an excuse. It looks like it comes down to it being the processing that moto put in.
Can anybody out there please let me know if rooting my phone and shooting RAW will produce cleaner photos? I would have to guess so, since I can control the sharpening myself. I haven't been able to find any RAW samples from this phone.
is it a software thing? I've converted to snap camera on whatever device.
I'm afraid it's in the firmware. Any camera app I've tried yields the same results
U should probably return or replace u your phone I had the same issue without even zooming
The phone couldn't focus on things right next the camera mine also had pink tints while recording
So I got mine replaced​
Now everything works good
It's also the processor. The G5 plus has the 625 while the S7 had the 820 allowing for much better image processing.
nigaindelhi said:
U should probably return or replace u your phone I had the same issue without even zooming
The phone couldn't focus on things right next the camera mine also had pink tints while recording
So I got mine replaced​
Now everything works good
Click to expand...
Click to collapse
Well it focuses just fine, and pictures in day light look alright but there is some heavy noticeable processing going on in the moto firmware.
This picture looks pretty good but if you zoom in just a bit you can really see the over sharpening.
Here is a photo of my Nexus 5x
It looks much cleaner to me. Less over processing and less sharpening artifacts. The processor on the G5 Plus should be pretty comparable to the 808 in the N5x so I really don't think its a processor issue. It seems to me like it was a design choice by Moto. All of the sample photos I have seen also have too much sharpening. I am strongly considering just rooting the device and shooting raw. At least then I can control the sharpening myself
Well then we would have to wait for an update then
emoney1219 said:
It's also the processor. The G5 plus has the 625 while the S7 had the 820 allowing for much better image processing.
Click to expand...
Click to collapse
It should make no difference, if you do the same processing in software - other than perhaps taking slightly longer to process the photo?
Otherwise, we'll have to shoot RAW if we want the best quality I guess?
It seems to me however, that any settings affecting the image processing quality should have parameters which could be changed?
critofur said:
It should make no difference, if you do the same processing in software - other than perhaps taking slightly longer to process the photo?
Otherwise, we'll have to shoot RAW if we want the best quality I guess?
It seems to me however, that any settings affecting the image processing quality should have parameters which could be changed?
Click to expand...
Click to collapse
The processor contains the ISP or the Image Signal Processor which controls HDR, white balance, auto focus, exposure, color filters and so on. The better the ISP the better the image. So while the 2 phones have the same sensor they will never have the same image results because they have different processors and the more powerful chips have better ISP on board resulting in better images even with the same sensor.
The strength of this camera's focusing is in the sensor chip - "dual pixel focus".
All the other things you mention such as white balance, HDR, color filters are applied after the RAW image is taken - so, there's really no reason that you couldn't generate the same quality of image.
if nothing else, I'm upgrading my everyday knock around (2015) moto e. I won't complain toooooo much.
I have to agree with the OP on this one - there is some horrendous post-processing going on with this phone.
I'd love to get that to stop - even if we have to go to RAW/DNG to get it.
Has anyone done the root/Freedcam method described in another thread on here and gotten DNGs from this camera?
I'd love to see how they look... I'll eventually do it when LOS gets stable enough.
wait couple of days more, there will be some nice mods incoming for g5p camera.
srb- said:
I have to agree with the OP on this one - there is some horrendous post-processing going on with this phone.
I'd love to get that to stop - even if we have to go to RAW/DNG to get it.
Has anyone done the root/Freedcam method described in another thread on here and gotten DNGs from this camera?
I'd love to see how they look... I'll eventually do it when LOS gets stable enough.
Click to expand...
Click to collapse
2017_05_09_17_44_53-Edit-Edit by defcomk, on Flickr
Raw No Flat Field Correction - Bad Noise Profile so color bleed when doing NR
defcomg said:
Raw No Flat Field Correction - Bad Noise Profile so color bleed when doing NR
Click to expand...
Click to collapse
Looks like a promising photo to me!
I'm new around XDA... is will flat field correction and NR come with time, or is this the best we'll get?
srb- said:
Looks like a promising photo to me!
I'm new around XDA... is will flat field correction and NR come with time, or is this the best we'll get?
Click to expand...
Click to collapse
Probably before Friday its only day two of having the phone but thanks for reminding me gonna do flat field now light nice and diffused

Gcam w/ dual lens for depth

Is there a version of Gcam that uses the dual lens for calculating the depth and then using Gcam's hdr+ enhanced. Google Pixel 2 uses split pixels for approx. the depth. Can the dual cam of Mi A1 or any other phone that has dual lens be used for calculating the depth?
The 2nd camera of the MiA1 is used for 2x zoom pics. Its not used to calculate depth of the subject in portrait mode.
barrack1 said:
The 2nd camera of the MiA1 is used for 2x zoom pics. Its not used to calculate depth of the subject in portrait mode.
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This is wrong... stock Xiaomi's camera does use both cameras to create fake "depth" effect.
Google Camera does this through software only and does not require 2nd camera, I've never seen any hack of GCam using 2 cameras.
May be After Android Pie update.-
BtB said:
This is wrong... stock Xiaomi's camera does use both cameras to create fake "depth" effect.
Google Camera does this through software only and does not require 2nd camera, I've never seen any hack of GCam using 2 cameras.
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Android 9 was supposed to have support for dual camera. As of now there is no support for dual camera in pixel devices and since google camera is ported from pixel or nexus device so there is no port that use both camera for bokeh. there is magisk module where it use tele lens. But both camera being used simultaneously is not happening any sooner may be in future.
BtB said:
This is wrong... stock Xiaomi's camera does use both cameras to create fake "depth" effect.
Google Camera does this through software only and does not require 2nd camera, I've never seen any hack of GCam using 2 cameras.
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Click to collapse
No, you are confused. The Mi A1 (and other Xiaomi phones like the Mi Mix 2s) uses software to create the depth of field effect. The 2nd rear camera module on the Mi A1 is used for 2x zoom only.
barrack1 said:
No, you are confused. The Mi A1 (and other Xiaomi phones like the Mi Mix 2s) uses software to create the depth of field effect. The 2nd rear camera module on the Mi A1 is used for 2x zoom only.
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Then check 2 attached pictures taken with "portrait mode".
First one, just take the pic:
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Second one I hid 2nd objective with my finger...
Oh... No depth effect...
Software is of course used, but to combine pictures from both cameras.
barrack1 said:
The 2nd camera of the MiA1 is used for 2x zoom pics. Its not used to calculate depth of the subject in portrait mode.
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Click to collapse
barrack1 said:
No, you are confused. The Mi A1 (and other Xiaomi phones like the Mi Mix 2s) uses software to create the depth of field effect. The 2nd rear camera module on the Mi A1 is used for 2x zoom only.
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Plus as well from http://in.c.mi.com/in/thread-843074-1-0.html :
The 50 mm telephoto lens captures the main object and 26 mm wide angle lens assists depth of field measurement. The stereoscopic imaging and deep learning algorithm then processes the individual images and produces a bokeh effect that is DSLR like in nature.
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BtB said:
Then check 2 attached pictures taken with "portrait mode".
First one, just take the pic:
View attachment 4579038
Second one I hid 2nd objective with my finger...
View attachment 4579039
Oh... No depth effect...
Software is of course used, but to combine pictures from both cameras.
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Click to collapse
You're right, my mistake. I read somewhere that the MiA1 primarily uses software for the bokeh effect which was wrong.
barrack1 said:
You're right, my mistake. I read somewhere that the MiA1 primarily uses software for the bokeh effect which was wrong.
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Actually, what you read might still be true.
Since it says that it uses "primarily" software, it could mean that 90% of the bokeh effect comes from software and it only uses 10% of the data from the 2nd camera, I have no idea how much is software and how much is hardware, but clearly it won't work with just one camera, while Google's algorithm is 100% software for sure (Pixels have single cameras).
And to get back to OP's question, from what I read, Google's algorithm is pretty damn good, so not sure there would be a benefit of using the dual lens... I've not installed the "hacks" to get Camera2 API and EIS, so I'm not using Google Camera, but if you have, I suggest you could make a test and compare both, and see which one is better.
BtB said:
Actually, what you read might still be true.
Since it says that it uses "primarily" software, it could mean that 90% of the bokeh effect comes from software and it only uses 10% of the data from the 2nd camera, I have no idea how much is software and how much is hardware, but clearly it won't work with just one camera, while Google's algorithm is 100% software for sure (Pixels have single cameras).
And to get back to OP's question, from what I read, Google's algorithm is pretty damn good, so not sure there would be a benefit of using the dual lens... I've not installed the "hacks" to get Camera2 API and EIS, so I'm not using Google Camera, but if you have, I suggest you could make a test and compare both, and see which one is better.
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It was a while ago, and thinking at length about it, I could be wrong on remembering that it was primarily software as well. Not where I read it from but more info about portrait mode:
https://www.xda-developers.com/how-to-enable-portrait-mode-on-any-phone/
Gcam is very useful for indoor/low light photos, the difference is quite noticeable. No permanent root or hacks to do get gcam.
Roughly all you have to do is run 2 commands as root to get gcam working. If you know how to boot to twrp and use adb shell its very easy. The part about locking back the bootloader is optional, but you can relock it if you want . Locking/unlocking will delete data unless you press some buttons down so its better to make backups first.
https://forum.xda-developers.com/mi-a1/how-to/root-enable-camera2api-eis-t3749541

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