[Q] Macro autofocus not working - Nexus 4 Q&A, Help & Troubleshooting

Can any of you take macro [close up] pictures with the N4?
My problem is quite frustrating... when you take a close up shot of something, the camera will auto focus into it... as it does that, for a split second you get a crisp close up macro glimpse of the item you taking a picture of... but once you hit the button to take the shot.. it does not pick up the right level of focus needed for macro and you end up getting a blurred image!
It's very frustrating, and such a phone really needs to have a working macro shots!
Can you test this for me please? and let know if anyone knows how to fix it?
Thanks

Known problem, please star the issue in the bug tracker http://code.google.com/p/android/issues/detail?id=43153&thanks=43153&ts=1359017856

It's not a bug, it's to do with focal length. There is a minimum distance that a camera can focus. For example, my nikon has a minimum focus distance of 20cm from the sensor using a 10-30mm lens. With the nexus, I would expect a similar limitation.

rickykemp said:
It's not a bug, it's to do with focal length. There is a minimum distance that a camera can focus. For example, my nikon has a minimum focus distance of 20cm from the sensor using a 10-30mm lens. With the nexus, I would expect a similar limitation.
Click to expand...
Click to collapse
But there's only one problem with that theory: the preview shows it getting good focus for nearly half a second, then it blurs out.

Related

cameras autofocus

why is it that the autofocus never completly focuses on the object i wanna take a picture of. when im taking a picture from up close i click the screen to autofocus on the item but it zooms in clears the item up but then returns back to a blurry image. any tips or ideas on how to get this working better? the hd2 took amazing picture with the autofocus and now the evo 8 megapixel camera dosent do the same.
Mu5ic92 said:
why is it that the autofocus never completly focuses on the object i wanna take a picture of. when im taking a picture from up close i click the screen to autofocus on the item but it zooms in clears the item up but then returns back to a blurry image. any tips or ideas on how to get this working better? the hd2 took amazing picture with the autofocus and now the evo 8 megapixel camera dosent do the same.
Click to expand...
Click to collapse
change your settings
i have mettering mode at center area and grid set to on
helped a little but still not quiet what the hd2 used to do. im pretty sure adjusting the contrast and stuff will help but i dont want to end up messing the setting up to much
i turned off face recognition and autofocus works 100x better now
IceCreaMan said:
i turned off face recognition and autofocus works 100x better now
Click to expand...
Click to collapse
that actually helped alote. thank you
My problem is that if i'm trying to focus on something that is small in front something that is farther away, it will focus then unfocus. Like when I hold my finger 6in away and it focus's on the wall 4 feet away instead, even if i click on my finger to focus it there
Mu5ic92 said:
why is it that the autofocus never completly focuses on the object i wanna take a picture of. when im taking a picture from up close i click the screen to autofocus on the item but it zooms in clears the item up but then returns back to a blurry image. any tips or ideas on how to get this working better? the hd2 took amazing picture with the autofocus and now the evo 8 megapixel camera dosent do the same.
Click to expand...
Click to collapse
You notice that specially when it's on bar code reader mode. I was testing the program, and it takes about 10 seconds to focus in the bar code clearly (it depends on your pulse). But I like that feature. I think iPhone doesn't have it.

Bad camera focus

So, my problem is that my camera does not seem to focus an Objekt, even when I "touch " it in the camera app. It is still a bit blurry when I view the taken shot. When I look at my friends Nexus 4, colors are much better and everything is sharp. Is it possible that I have a broken camera? The settings are exactly the same...
It may be helpful to post some example shots.
1st thing to look for is to make sure that the glass covering the lens is clean. And shoot in good lighting.
Known problem, please star the issue http://code.google.com/p/android/issues/detail?id=43153&thanks=43153&ts=1359017856
AW: Bad camera focus
And the washed out colors? Max it be the fault of rev10 devices? A friend of mine said something like that
//edit
Here's a sample. If you zomm in you will see the Blurry borders. They are really annoying because when I look at the pic on a PC, I am able to notice it. Maybe it's the cameras fault or Googles fault for bad drivers and software.
http://db.tt/QSb8F0KE
Sent from my Nexus 4 using xda app-developers app
It seems to me like the hardware is perfectly capable of the focal lengths to get clear focus, it's just the autofocus implementation that's broken. Is autofocus a driver level implementation? If so, would it be feasible to try and create a custom driver to at least allow for true manual focus?
There are several things that can be going on here. 1.) it ain't a great lens, so not all areas of the picture are going to be razor sharp. I see a good degree of softness in the corners.
2.) I have noticed the camera's default behavior is to use lower ISO, and longer shutter speeds in less than ideal light, making camera movement a major factor in blurry photos. If you're gonna test under less than ideal light, rig up some kind of tripod.
3.) Auto-focus algorithms decide focus based on maximum contrast. If the area of your focus reticle is over an area that has poor contrast, focus will be compromised. Low light also lowers contrast.
4.) Depth of field. It is limited with this lens. Make sure areas you are checking for focus are on/near the same plane with shots that have reasonable distance separating foreground/background objects. They all can't be in focus.
With all that said, reasonable photography skills can get pretty reasonable results from this camera, as is exhibited in the photos posted in the photo thread of the "general" forum.
It does focus, but has a small delay tho..
actually the focus on N4 is slow a little bit ..
Is there any new piece of information about the bad camera focus?
anyone else have a pink haze when capturing white objects

HTC one great phone, lacks focus

I mean it in a literal sense.
If you look at the image below, youll be able to see that its a bit blurry,
I've drawn 2 black lines in the image, notice that the top and the bottom is blurry and the center is focused.
It doesnt occur alot, but it does happen and sometimes even in videos.
Any help as to why? Perhaps 4.2.2 might fix this?
I think the DOF is so narrow because the lens has a wide aperture of F2.0 which helps in low light.
RoSonic_ said:
I think the DOF is so narrow because the lens has a wide aperture of F2.0 which helps in low light.
Click to expand...
Click to collapse
Can you explain what DOF is?
Is there anyway I could fix it? You think anyone else has this problem?
"depth of field (DOF) is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image." - (http://en.wikipedia.org/wiki/Depth_of_field)
And I don't think it's a problem. It's just how the lens is made with a large aperture to allow more light in to the image sensor.
You could try to compensate this a bit by increasing the sharpness from the camera menu.
I'd be more concerned with the poor dynamic range shown in the top of the pic. ;O)
Sent from my HTC One using Tapatalk 4 Beta
That`s totally normal for the one, it only exposes the focus point, instead of the whole image, could htc not have given us a choice
John.
americasteam said:
I'd be more concerned with the poor dynamic range shown in the top of the pic. ;O)
Sent from my HTC One using Tapatalk 4 Beta
Click to expand...
Click to collapse
Tinderbox (UK) said:
That`s totally normal for the one, it only exposes the focus point, instead of the whole image, could htc not have given us a choice
John.
Click to expand...
Click to collapse
Well that sucks. One of the reasons I bought this phone was for the camera.
Do you know anyway I could fix this? or atleast minimize it?
The problem is when the image contains both dark and bright areas, if you focus on the bright, the dark areas will be underexposed and if you focus on the dark the bright areas will be overexposed, you need to find an area to focus on that will give you an average exposure for the entire image.
I have the same problem, but some photo`s are amazing and some are utter crap.
Try using hdr mode, it takes multiple images at different exposure levels and then integrates them into one photo, but you need to keep the phone very steady, hopefully HTC will fix this problem.
John.
uzman1243 said:
Well that sucks. One of the reasons I bought this phone was for the camera.
Do you know anyway I could fix this? or atleast minimize it?
Click to expand...
Click to collapse
Mine does this as well. Easiest fix I've come across is just tapping on the screen in the area you want focused...it seems to hold focus better after the first time and the photos look a lot better.
Problem is, I generally forget about this until after the first picture is taken without it. So it's a process for sure.
Sent from my HTC One using xda premium
Has anybody tried some other camera apps from the play store, maybe we can find one that exposes correctly, i wish the one had my nikon`s matrix metering
John.
---------- Post added at 06:53 PM ---------- Previous post was at 06:46 PM ----------
I bought this Camera Zoom FX app for £0.50p on sale that i never used, i think it`s about time i tried it.
John.
Mine is the same way. Wasn't bashing the camera was just giving my first impression of the pic posted. I think the camera is excellent for a phone. Small sensor and tiny optics will only go so far. This device is fantastic as an overall package.
Sent from my HTC One using Tapatalk 4 Beta
The sensor is great for a phone camera, but the software that does the exposure is very very poor or am i missing something???
John.
You rack focus
Sent from my HTC One using xda premium
Why are all you guys saying this is normal? Either you have defective phones or you don't know how to take pictures! ... The only time my One does this is when I use touch to focus on Macro mode. I have taken hundreds of pictures and no pictures look like yours unless I wanted them to.
Agreed. The picture in the OP looks like an issue with OIS, not depth of field.
If it was a one time thing then this thread doesn't need to exist. If it happens a lot the phone needs to be replaced.
Sent from my HTC One using xda app-developers app
NxNW said:
Agreed. The picture in the OP looks like an issue with OIS, not depth of field.
If it was a one time thing then this thread doesn't need to exist. If it happens a lot the phone needs to be replaced.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
Well its not a repetitive condition but occurs once in a while. Even in videos.
Try camera fv-5 from playstore. DSLR style camera app with multiple metering modes.
Sent from my HTC One using Tapatalk 4 Beta
AllAboutTheCore said:
Why are all you guys saying this is normal? Either you have defective phones or you don't know how to take pictures! ... The only time my One does this is when I use touch to focus on Macro mode. I have taken hundreds of pictures and no pictures look like yours unless I wanted them to.
Click to expand...
Click to collapse
I do think it's a flaw in the camera software that exposure and focus can't be decoupled. I LOVE the shallow depth of field but can't use it property because touching-to-focus blows out highlights.
uzman1243 said:
I mean it in a literal sense.
If you look at the image below, youll be able to see that its a bit blurry,
I've drawn 2 black lines in the image, notice that the top and the bottom is blurry and the center is focused.
It doesnt occur alot, but it does happen and sometimes even in videos.
Any help as to why? Perhaps 4.2.2 might fix this?
Click to expand...
Click to collapse
Most of these comments come from people who have no idea what they're talking about.
Your phone is perfect. Nothing wrong with it. All you did was tap to focus on the middle of the picture.
This did 2 things.
1. It will FOCUS on the center of the pic. Other areas will be blurred. Hence the term, focus. That's how cameras work.
2. The exposure was adjusted to where you focused it to. What does that mean?
If you focused on a light area the camera will adjust the exposure to compensate. What that means is if it's light, the camera will darken the overall image. Lights become darker, farms become darker.
If the photo is focused on a dark area, the camera will adjust the photo by making the dark area brighter and the bright areas, as a result, brighter. Which is why you have super white skies.
To fix it, go to the camera settings and I think select touch to capture. But to say fix means it's a problem.
It's not.
For landscapes, use landscape mode which will focus on the entire image and bot blur. Also you can tap on the area where you want adjusted, ie brighter or darker. Blur again is only cause you focused. Don't focus on landscapes.
Photographer here. Focus on this comment and not anyone who says your phone is messed up. This is why.
Take a look at my two attached photos. One I clicked on the sky and the other I clicked on the grass. Light then dark. Can you figure out which was which and see what happened to the photo?
Note that it was overcast and cloudy. There were NO BLUE SKIES. it was grey. So the sky wasnt killed by the camera
Btw don't always use Hdr. Don't. Its not a saving grace every time. If you shoot in the sun you're shooting in the sun. Photography rule #1: DON'T.
ALWAYS USE THE SCENES WHEN YOU CAN. WHICH IS WHY THEYTE THERE AND EXIST. SLRS HAVE THEM TOO FKR A REASON!
As for the lines, panorama? Did you move too fast? That's what happens when you do - camera can't stitch properly
Sent from my HTC One
chc31 said:
Most of these comments come from people who have no idea what they're talking about.
Your phone is perfect. Nothing wrong with it. All you did was tap to focus on the middle of the picture.
This did 2 things.
1. It will FOCUS on the center of the pic. Other areas will be blurred. Hence the term, focus. That's how cameras work.
2. The exposure was adjusted to where you focused it to. What does that mean?
If you focused on a light area the camera will adjust the exposure to compensate. What that means is if it's light, the camera will darken the overall image. Lights become darker, farms become darker.
If the photo is focused on a dark area, the camera will adjust the photo by making the dark area brighter and the bright areas, as a result, brighter. Which is why you have super white skies.
To fix it, go to the camera settings and I think select touch to capture. But to say fix means it's a problem.
It's not.
For landscapes, use landscape mode which will focus on the entire image and bot blur. Also you can tap on the area where you want adjusted, ie brighter or darker. Blur again is only cause you focused. Don't focus on landscapes.
Photographer here. Focus on this comment and not anyone who says your phone is messed up. This is why.
Take a look at my two attached photos. One I clicked on the sky and the other I clicked on the grass. Light then dark. Can you figure out which was which and see what happened to the photo?
Note that it was overcast and cloudy. There were NO BLUE SKIES. it was grey. So the sky wasnt killed by the camera
Btw don't always use Hdr. Don't. Its not a saving grace every time. If you shoot in the sun you're shooting in the sun. Photography rule #1: DON'T.
ALWAYS USE THE SCENES WHEN YOU CAN. WHICH IS WHY THEYTE THERE AND EXIST. SLRS HAVE THEM TOO FKR A REASON!
As for the lines, panorama? Did you move too fast? That's what happens when you do - camera can't stitch properly
Sent from my HTC One
Click to expand...
Click to collapse
The black lines on the image, I DREW to show where it gets blurred (not panaroma).
You're right, but when I focus on the center, all objects in the background should get blurred right? I mean thats how the focus works. You focus on a particular subject (lets assume in the foreground) the objects in background gets blurred.
If you see the image I uploaded (in the top line) the upper part of the tree is blurred and the lower part is focused.
It doesn't work like that right?

Galaxy S5 macro photography problem - plz help

Hi,
I want to capture small objects like small flowers, bees, insects and pests but cant get the Samsung Galaxy S5 to focus on anything close. My S3 had a button for Macro Photography. I don't see this option and when I tap to focus, it tries but it acts like it's too close and fails. It looks like it will focus on the close object for like a second, then it zooms back out.
I have tried to turn off auto focus and stabilization but the result is same.
What should i do now to fix it?
Or maybe any third party app can do it?
Make sure "Selective Focus" option is disabled. This automatically turns on macros, although you don't see an actual macros on/off toggle, but I'm able to take pictures in focus in 2.5-3 inches distance from the lens, which is technically the "macro range"
Commodore 64 said:
Make sure "Selective Focus" option is disabled. This automatically turns on macros, although you don't see an actual macros on/off toggle, but I'm able to take pictures in focus in 2.5-3 inches distance from the lens, which is technically the "macro range"
Click to expand...
Click to collapse
it tries but it acts like it's too close and fails. It looks like it will focus on the close object for like a second, then it zooms back out.
I have tried to turn off auto focus and stabilization but the result is same.
Can u share some pics of small objects u captured?
Thanks
There is a limit to how close you can get with the S5 camera, as the lens is static, no moving parts to focus really
The S5 does like lots of light though, so you'll get much better results if the subject is very brightly lit, and it will focus much better with more light
Don't expect miracles like a DSLR can do though, but you can get some pretty great shots
*Detection* said:
There is a limit to how close you can get with the S5 camera, as the lens is static, no moving parts to focus really
The S5 does like lots of light though, so you'll get much better results if the subject is very brightly lit, and it will focus much better with more light
Don't expect miracles like a DSLR can do though, but you can get some pretty great shots
Click to expand...
Click to collapse
Then i need to get s3 coz i 've experienced good macro photography with it.
Thanks

Can you use the wide angle (back) camera to take selfies?

Hi all - it sounds like the front (selfie) camera does not take the best pics.
One of the uses I wanted for the G6 is to use the back camera (the wide angle one) to take selfies instead.
I won't be able to see the screen, but with the wide angle lens, I don't really need to do much framing I'm guessing.
The only thing that I'm concerned about is the lack of auto focus and if the wide angle camera can focus on subjects about 1 metre away from them.
Does anyone have a G6 who could comment / or post a sample pic of this? This is pretty much the dealbreaker for me to get this phone.
Cheers!
I'm interested in the same question! Would be great if anyone could comment on this, hence bumping this thread.
Yes. Front facing camera is not as good as it should be. Specially in low light situation...
This, and lack of LED notification light are the biggest flaw to me
Back cameras takes good selfies though. I don't have any problem with framing or autofocus. Does a good job with defocusing background and shaking effect is at minimum thanks to new image stabilizing system.
Hope this help you
Cheers
Someone here at xda calculated that all things between 35cm and infinity are in Focus for the wide angle camera.
I also made some tests and I think that he is not totaly wrong with his 35cm.
So taking selfies should be ok.

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