[Q] How camera sensor works - Sony Xperia T, TL, TX, V

So I was thinking about something lately. We have that 13Mp camera (Nothing super in terms of the quality) But what does the phone or lens when you put in on like 8Mp. Is it that it makes a 13Mp and crop it? Or can it be used to use multiple pixels as one? Or does it just shutdown those?
Question that I have for some time now

it's image sensor
the quality of photo depends upon image sensor the bigger the image sensor the better photo u will get:laugh:

ArmaNineTSeven said:
So I was thinking about something lately. We have that 13Mp camera (Nothing super in terms of the quality) But what does the phone or lens when you put in on like 8Mp. Is it that it makes a 13Mp and crop it? Or can it be used to use multiple pixels as one? Or does it just shutdown those?
Question that I have for some time now
Click to expand...
Click to collapse
It uses 8 Mp of these 13 Mp, which produces a smaller image size. Use all 13 Mp and then resize it manually to the required size. For best image quality do this on a PC.

Related

Improve Camera Quality in Automode?

Hello,
i just got my hands on the Z3 Compact and took it out to test it on a sunny day.
Back home i noticed that the picture quality is really bad in auto mode!
I made a quick comparison picture to my old phone: a Xiaomi Mi2 (not the S Model) with 8m Camera.
The picture shows the text quality of the Xperia Z Ultra Power Pack which is the best example i can do now.
The automode settings are: ISO-800, F/2, 1/50 Sec, no flash
The Mi2 automode settings are: ISO-488, 1/16 Sec (no data on the F), no flash
Directlink:
http://abload.de/img/neuebitmapoksb8.png
And here the same with manual mode and a lower ISO (100 instead of 800 that was used in auto mode):
The complete settings were: ISO-100, F/2, 1/8 Sec, no flash
Directlink:
http://abload.de/img/dsc_0099emqqy.jpg
Heres another example of a picture i took when i was outside (without zoom, i just cut away some parts to make it smaller):
The automode settings here: ISO-50, F/2, 1/320sec, no flash
Directlink:
http://abload.de/img/dsc_0036lujf6.jpg
Any idea why automode causes such very bad picture quality? Any ideas on how to improve it?
Thank you for help!
Why bother so much about the auto mode? You can take such great pictures in manual mode when you play with the settings. In the end auto mode will never be great, because it does what it says: auto mode, it adjusts the settings to what it thinks is best in each situation.
Playing with the manual mode will also give you more knowledge of basic photography.
Sent from my D5803
Auto mode became better over time on the Z1C, I guess they'll keep improving it. Dunno if they made a step back here.
Dsteppa said:
Why bother so much about the auto mode? You can take such great pictures in manual mode when you play with the settings. In the end auto mode will never be great, because it does what it says: auto mode, it adjusts the settings to what it thinks is best in each situation.
Playing with the manual mode will also give you more knowledge of basic photography.
Sent from my D5803
Click to expand...
Click to collapse
Auto mode will always be handy.. no one wants to mess with settings most of the times.. its a phone camera and if i want manual controls i would pick a dslr. Thats why iphone wins in camera department. Take it out and snap a pic instantly with great output. Even on my galaxy s5 i take pictures on auto and i havent seen anyone setting things up manually each and every time to take a damn photo
Auto mode uses a technique called oversampling to gather information with the 20MP sensor, then heavily processes the photo to whatever the software (Sony) decided was best (post-processing). The idea is you get the detail of a 20MP sensor, in a auto-corrected and down-sized 8MP resolution photo. Oversampling is also why the Z3 has a small amount of "lossless" zoom. (ever tried "zooming" with other phone cameras? It usually leaves you with a terrible blob of digital noise)
As with any automatic post-processing, there are pros and cons. The truth is, the software doesn't really know what you're taking a picture of, so it tries to give it's best guess on correcting exposure, colour, noise, etc. The result you're seeing in the auto-mode photo is a result of heavy post-processing (Noise Reduction), bad focus, and camera shake.
The reason your "manual" photo is better is because manual mode drops the post-processing. It also looks like you were able to hold the camera steadier for the manual shot.
"Auto" mode is far from perfect, but it will often save you more times than you know. Over time, you'll learn the strengths and weaknesses of "auto mode", and you'll know when you need to switch to Manual for the better shot. Auto mode can also be easily improved upon via software updates.
PS: A little trick I use to minimize camera shake while taking a photo is to set a quick 2 second self timer. This will allow you time to press the shutter button and then stabilize the phone for minimal "camera shake"
I have read the z3 Compact camera is great, great, great...but yeah I have been grossly underwhelmed by the auto mode. The auto mode is THE mode...sure have a manual mode if you want...if you have time. But I use my phone for quick snaps...QUICK being the operative word. I want to pull it out aim and shoot. My iphone5 took very acceptable pictures. The z3 compact has shown me grainy, bland looking shots in auto.
I don't get why auto mode isn't the most important mode for designers. It's a phone...not a camera...so make the auto mode work
Yeah, camera is definitely underwhelming. That being said though, it's better than most. My Moto X took absolutely horrid shots for the most part.
Crewville96 said:
Yeah, camera is definitely underwhelming. That being said though, it's better than most. My Moto X took absolutely horrid shots for the most part.
Click to expand...
Click to collapse
Coming from 2 years on the iphone5...I was under the impression that camera technology was pretty well mastered across the board. iphone makes it look easy. There's even an annoying lag between pressing the button and the shot being taken on the Z3...what the hell is up with that?
Eclypz said:
Auto mode uses a technique called oversampling to gather information with the 20MP sensor, then heavily processes the photo to whatever the software (Sony) decided was best (post-processing). The idea is you get the detail of a 20MP sensor, in a auto-corrected and down-sized 8MP resolution photo.
Click to expand...
Click to collapse
Well, my z3c is still on the way. I have a question. Will the 8MP pictures I take in Manual mode be oversampled as well?
Because the sensor is still 20MP and if I manually adjust it to take only 8MP pictures what advantage do I have in having a sensor that is 20MP? I never print photos. Only watch it on my phone, laptop or my LED tv which is 1080p and 50" screen. I don't want photos that are too big in file size unless it is benefiting me in some sense other than for the purpose of printing and viewing in very large resolutions. I see that oversampling in auto mode is benefiting from a 20MP sensor but is that the case if I take 8MP pics in manual mode?
coolmalayalee said:
Well, my z3c is still on the way. I have a question. Will the 8MP pictures I take in Manual mode be oversampled as well?
Because the sensor is still 20MP and if I manually adjust it to take only 8MP pictures what advantage do I have in having a sensor that is 20MP? I never print photos. Only watch it on my phone, laptop or my LED tv which is 1080p and 50" screen. I don't want photos that are too big in file size unless it is benefiting me in some sense other than for the purpose of printing and viewing in very large resolutions. I see that oversampling in auto mode is benefiting from a 20MP sensor but is that the case if I take 8MP pics in manual mode?
Click to expand...
Click to collapse
By selecting 8MP in manual mode, all you're doing is resizing the photo from 20MP (post processing). The sensor will always capture at its full resolution.
If you know you only want a 8MP photo, there is a small benefit in resizing the photo at the phone:
The first benefit is obviously file size, but before I get into the second reason, I need to explain something first: A picture that has been converted to JPG is considered to be post processed. The compression that the JPG engine performs means your image loses details and thus has been altered. I know I said above that Manual mode means the image isn't processed, but I really only said that for the sake of explaining things easier. The average user does not consider JPG compression as post processing and they probably don't care to know. The truth is, unless Sony allows us to capture images in RAW format, the act of converting all our images to JPG means our images are all being post processed whether we like it or not. The difference between manual and auto mode is really about "how much" post processing occurs. In manual, Sony is most likely just compressing to JPG (and probably lens distortion correction but I won't get into that now) , and not applying corrections like noise reduction.
As for how it may be beneficial to resize at the phone; JPG compression is usually the final step in post processing. So by resizing at the phone, the theory is the image is captured in [email protected] > resized to 8MP while still in RAW format > compressed to JPG.
This means you benefit from the photo being resized before it is "post processed". In theory, this method should leave you with a higher quality 8MP photo versus resizing from a computer. Resizing from a computer means you're applying post processing to an already "post processed" photo.
For the average user, 8MP is more than enough, however, this is not to say all phone cameras should come in 8MP. Keep in mind that there is a big difference between an image captured by a 8MP sensor vs being captured by a 20MP sensor and then resized to 8MP. The 20MP sensor can capture much more detail with proper/sufficient lighting.
@wooki (OP):
Especially the first comparison "Xperia Z Ultra Power Pack", the one you made with the Z3C is nothing but blurred. So what is it you're trying to show/compare? I mean, yes, may the Z3C doesn't come with the best camera on the market, and yes, the "Auto mode" does not always provide the best results. Not really sure you're into photography or not, but what can be expected from a lens not even half the size of a fingernail? Not too much, right?! Get an SLR with decent lenses and a full frame sensor if you need more/better.
However, the attached fotos were one of the first ones I made with the Z3C (in Auto Mode) and think it's quite ok. No processing, just resized them.
@sxtester
I was comparing my Z3C with my old phone (a 2 year old Xiaomi Mi2) which seems to have a very good auto mode. Was just asking if i was the only one who has had a bad automode experience and if someone knows how to improve it.
How do your pictures look like without resizing?
As i'm owning a WQHD Screen all my automode pictures look very bad!
I don't want to set up the manual mode every time i want to take a picture, this phone has a shutter button to make fast pictures and with the setup phase i lose time even if manual mode gives me excellent pictures.
Eclypz said:
Auto mode uses a technique called oversampling to gather information with the 20MP sensor, then heavily processes the photo to whatever the software (Sony) decided was best (post-processing). The idea is you get the detail of a 20MP sensor, in a auto-corrected and down-sized 8MP resolution photo. Oversampling is also why the Z3 has a small amount of "lossless" zoom. (ever tried "zooming" with other phone cameras? It usually leaves you with a terrible blob of digital noise)
Click to expand...
Click to collapse
The manual mode uses oversampling as well, if you select a lower resolution. I've compared an auto mode shot with a manual mode shot of the same scene, and both were equal in terms of details and noise. The main difference was that the auto mode shot looks far worse because it tends to use that horrible HDR which just washes out the photo and ruins the contrast to near non-existence. I find that "multi" light metering mode, selectable in manual mode, gives far better results than HDR on this phone.
---------- Post added at 07:32 PM ---------- Previous post was at 07:20 PM ----------
Auto:
http://i.imgur.com/er38iZn.jpg
Manual:
http://i.imgur.com/Oqwl3KE.jpg
---------- Post added at 07:47 PM ---------- Previous post was at 07:32 PM ----------
Furthermore, the pictures from this phone's camera would look a lot better if Sony used a better algorithm for their oversampling.
Here is a comparison between a 100% crop of an image taken using Sony's oversampling (8mp) (former attachment) and a 100% crop of a photo taken at 20mp, and then downsampled to the 8mp dimensions using Irfanview (latter attachment):
I agree....Sony's software is lacking compared to everybody else. Auto mode seems kind of hit or miss. Their camera sensors are excellent, as I believe the iPhone uses a Sony sensor, but the difference being Apple is able to process better looking images with their software. I also have a iPhone 5s, and I must agree that 7/10 times, I'll get a better looking image from the iPhone. In terms of capturing details, i think Z3C is better (as expected), but all my images from the Z3C are on the "red" side when shooting in auto-mode. In the end, the iPhone comes out with the better looking photo because I'd much rather have better colour re-production over slightly more detail that you wouldn't even notice unless you had a photo to compare against.
I still think the Z3C's camera is on par with the best from Samsung's Galaxy S5 and LG's G3 (Sony sensor). It's way better than my old HTC One M8's "ultrapixel".
On the Android side of things, I think Z3C is still top 3, and Top 5 in the Smartphone world (iPhone and Lumia above it).
wooki said:
@sxtester
How do your pictures look like without resizing?
Click to expand...
Click to collapse
@wooki:
Here you go, all unedited made in Auto Mode:
http://imgur.com/uMiM0Sh
http://imgur.com/0mYsf5U
http://imgur.com/vJ32fjT
http://imgur.com/8g7oJD7
degraaff said:
Here is a comparison between a 100% crop of an image taken using Sony's oversampling (8mp) (former attachment) and a 100% crop of a photo taken at 20mp, and then downsampled to the 8mp dimensions using Irfanview (latter attachment):
Click to expand...
Click to collapse
Sony's approach looks way better because it doesn't blur that heavily. If I want to blur away all the details, I can still do that myself.
This is a bit off-topic, but I don't really want to start a new thread just to ask such a silly question.
I've been playing with the camera app some more and is there seriously no "rule of thirds grid" in Sony's Camera app? I often like to use the grids to assist in making sure my shot is straight.
Iruwen said:
Sony's approach looks way better because it doesn't blur that heavily. If I want to blur away all the details, I can still do that myself.
Click to expand...
Click to collapse
Really? Sony's approach is full of over sharpening artifacts and -auras, doesn't look better at all IMO.
One dumb quetion.
If i use another camera APP, it will improve the photo quality?
point_pt said:
One dumb quetion.
If i use another camera APP, it will improve the photo quality?
Click to expand...
Click to collapse
It depends. I choose CFV-5 and PNG image saving (rrather than JPG) and it looks much better then Superior auto, and sometimes better than Sony's Manual mode.

Using both CAMERAS at the same time

I saw a topic from P9 forum where folks discused the question- wether the phone actually uses both camera sensors at the same time... How is this with our p10? I tried to take some close-up shots with BW covered/ normaly- and there is 0 difference- same quality, size etc...
- Only case when I see actually both cameras working hard at the SAME TIME is when using bokeh mode.
BUT WAIT A SECOND. Huawei states that colour sensor is only 12MP ok, but how on the earth it came down that I was able to take 20MP pictures with BW covered???
Sooo, have you discovered something about this? I will try to take some far away landscapes tomorow and see if something changes then...
A Long time ago i think about the Same
How my P10 can take color pics in 20mp when it just have a 12mp sensor
StonyD said:
A Long time ago i think about the Same
How my P10 can take color pics in 20mp when it just have a 12mp sensor
Click to expand...
Click to collapse
It would be logical, if phone used both sensors at thr same time- buy using BW details combined with colours from 12MP. BUT i tried several times to cover that BW sensor and camera doesnt give a deamn, it takes 20MP colour pics anyway...
I read something about this months ago.
The camera uses both sensors in 20MP and HDR mode.
When you make a 20MP color picture, it makes a 20MP b/w picture and a 12MP color picture as stretched overlay.
With the good b/w contrast it looks really good even the color sensor has only 12MP.
This is also the reason why you can't use optical zoom in 20MP mode.
The zoom works with the b/w sensor, so it's not really optical zoom but "enhanced digital zoom".

[Camera] Is it just me .....whats your settings?

Ok coming from Samsung , HTC, Asus and iPhone (I know I here you gasp)
I pretty much use my rear camera alot for work purposes, no selfies
Mostly its point and shoot I do and I know the camera on these are for ppl getting the right shot manually due to the settings
Have tried apps on this phone Like :
Camera FV-5 (same kind of results)
Open Camera (which seems to stay active in the background)
Now heres my question if you quickly take a photo, point and shoot (focusing first) using highest resolution
Once you zoom into the taken picture, its all grainy even if its took about 3-4 feet away from you
Now, if you take the same picture with monochrome its a better pic and if focusing on say a bottle with writing
Its more visible to read compared to the colour as the colour looks like its a water painting
Are you guys getting the same results or know preferred settings to use?
Thanks
Try to set the resolution to 12mp to enable the 2x "optical" zoom.
The color sensor is only a 12mp one, the monochrome sensor has 20mp.
If you enable 20mp in settings, the camera will make a monochrome and color photo and merge them into one. This is also the reason why the 20mp photos are a bit blurry or too bright on edges.
So, use 12mp and the grain should be mostly gone.
Here are three shots by me:
https://imgur.com/a/BYf7kIX - played with focus, no aperture feature.
https://imgur.com/a/xA2qURk - just a free hand picture in 12mp without zoom
https://imgur.com/a/RbEdeiI - and the same with 2x optical zoom.
Jannomag said:
Try to set the resolution to 12mp to enable the 2x "optical" zoom.
The color sensor is only a 12mp one, the monochrome sensor has 20mp.
If you enable 20mp in settings, the camera will make a monochrome and color photo and merge them into one. This is also the reason why the 20mp photos are a bit blurry or too bright on edges.
So, use 12mp and the grain should be mostly gone.
Here are three shots by me:
https://imgur.com/a/BYf7kIX - played with focus, no aperture feature.
https://imgur.com/a/xA2qURk - just a free hand picture in 12mp without zoom
https://imgur.com/a/RbEdeiI - and the same with 2x optical zoom.
Click to expand...
Click to collapse
Thanks for comments
Is this with stock camera? stock rom?
as My pics are no where near as good as this on 8.0.0.379(C02)
EwOkie said:
Thanks for comments
Is this with stock camera? stock rom?
as My pics are no where near as good as this on 8.0.0.379(C02)
Click to expand...
Click to collapse
Everything stock, 8.0.0.370 on VTR-L29C432, stock EMUI camera.
Can you show some examples?
Desk is about 4-5 feet away from me when taking these shots
Sunny outside
Just normal photo and putting focus on the bottles as shown (seen in zoomed photo)
You can clearly see they look terrible apart from monochrome
No settings have been touched apart from resolution
Zoom is about 4.6x
Monochrome
12MP
20MP
Zoomed in
I put some crap on the desk but if you can see the text is visible on some stuff to give you an idea

Discussion 40MP vs 10MP photos

Hi guys,
I have just got the phone on Monday and I noticed that default setting for the camera is to take photos in 10 megapixels mode.
Is there any advantage of 10mp over 40mp mode that is available? What are differences?
I personally noticed that 40MP photos are darker and I need to hold my phone more steady than when taking them in 10MP resolution.
I attached 2 identical photos. The darker one is 10MP, the brighter one, little more blurry is 40MP
40MP option does not allow you to zoom. Only 1x
Sent from my LYA-L29 using Tapatalk
lozohcum said:
Hi guys,
I have just got the phone on Monday and I noticed that default setting for the camera is to take photos in 10 megapixels mode.
Is there any advantage of 10mp over 40mp mode that is available? What are differences?
I personally noticed that 40MP photos are darker and I need to hold my phone more steady than when taking them in 10MP resolution.
I attached 2 identical photos. The darker one is 10MP, the brighter one, little more blurry is 40MP
Click to expand...
Click to collapse
No real benefit. It uses pixel binning to downscale from 40mp to 10mp so essentially they end up the same quality
For quick snap or share I use the default Photo mode with 10 MP. If the photo will be used for web or print - then I use PRO mode + RAW format. RAW image from the main sensor is always is 40 MP - It does not depend on the resolution you choose.
RAW image + Lightroom edit + export is the best option for crisp and great quality photos.
techops said:
For quick snap or share I use the default Photo mode with 10 MP. If the photo will be used for web or print - then I use PRO mode + RAW format. RAW image from the main sensor is always is 40 MP - It does not depend on the resolution you choose.
RAW image + Lightroom edit + export is the best option for crisp and great quality photos.
Click to expand...
Click to collapse
That's true. If you're planning on shooting raw and editing yourself this is an instance where 40mp makes much more sense.
See men basically in well lit condition 10mp will take 9ver exposed pictures and 10 mp is for darker scenarios and 40mps use in day-time
Uooer image shot on 10mp u can see blue floor and red
Picture below is well balanced
I use 40 mp in when there is enough light, i prefer it for the more natural color and because I find 10mp over exposed
And I use 10 mp in low light condition

What is going on with the cameras? Is there something wrong with the specs?

I discovered something strange with my S20 FE. When I open the camera and try the ultra-wide, the wide and the zoom, the last camera module is never used! I tried this by blocking the cameras with my fingers. So the middle camera is used for both the wide and zoom mode, which means that the device does not have an optical zoom camera OR the optical zoom works in a different way than I thought!
I also tried to take some pictures while covering the cameras, just to see if the viewfinder uses different cameras than the ones that are used for the actual shoot, but the result does not change (zoom photos are taken using the wide).
So here are my questions:
1) What is the bottom camera used for?
2) How is there an optical zoom if both the wide and zoom photos are taken using the same sensor?
3) Is this the same sensor/approach like in S20 which uses an 64MP sensor to shoot 3X hybrid zoom?
4) Anyone that has used the bottom camera to shoot anything? Are the specs wrong?
I've got the 5G version with the Snapdragon 865.
UPDATE!
The bottom camera is used when zooming more than 10X!!! This makes things more complicated!
atg2x said:
UPDATE!
The bottom camera is used when zooming more than 10X!!! This makes things more complicated!
Click to expand...
Click to collapse
Actually, the 3X camera works when there's enough light, otherwise, the main camera will be used.
atg2x said:
I discovered something strange with my S20 FE. When I open the camera and try the ultra-wide, the wide and the zoom, the last camera module is never used! I tried this by blocking the cameras with my fingers. So the middle camera is used for both the wide and zoom mode, which means that the device does not have an optical zoom camera OR the optical zoom works in a different way than I thought!
I also tried to take some pictures while covering the cameras, just to see if the viewfinder uses different cameras than the ones that are used for the actual shoot, but the result does not change (zoom photos are taken using the wide).
So here are my questions:
1) What is the bottom camera used for?
2) How is there an optical zoom if both the wide and zoom photos are taken using the same sensor?
3) Is this the same sensor/approach like in S20 which uses an 64MP sensor to shoot 3X hybrid zoom?
4) Anyone that has used the bottom camera to shoot anything? Are the specs wrong?
I've got the 5G version with the Snapdragon 865.
Click to expand...
Click to collapse
1) The bottom camera is the 3X optical zoom.
2) As I mentioned above, depends how much light you have.
3) The zoom sensor of s20/s20+ is different, they don't have optical zoom , just hybrid.
4) The camera works perfectly, daylight photos, night photos with wnough light, moon photos.

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