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?
Related
Hi, I don't know how various settings affect the results. However, I wish to be able to take excellent photos and videos under different conditions. Are there any good apps that take better photos and videos than the stock Camera App? I am using GB. Thanks
+1
Or 1up
Might be dependant on hardware cause of varying quality pics
Sent from my GT-N7000 using Tapatalk 2
what is wrong with pictures taken by the stock camera app? can you provide some example of a 'bad picture'?.
if you want an interface that is more DSLR like try https://play.google.com/store/apps/details?id=com.flavionet.android.camera.lite
here are some of my pics, i dont feel that they are of bad quality for a 'phone camera'.
http://www.flugbaerchen.de/lnkimg/egypt12/20120506_164915.jpg
http://www.flugbaerchen.de/lnkimg/egypt12/20120525_151334.jpg
http://www.flugbaerchen.de/lnkimg/egypt12/20120506_191654.jpg
I am happy with the stock camera.. Many features too
Sent from my GT-N7000 using Tapatalk 2
Perhaps it is better to talk about this via samples.
Any suggestion on better camera settings is appreciated.
I guess I may need an app that stores a set of preset settings
for taking photos/videos under different environments. Thanks.
In photo 1, I do not know why the ceiling lights are like that.
I changed various settings but there was no improvement.
In some cases, the overall color of the room changed.
In photo 2, the room appeared to be dark but it was not.
I changed the flash to auto, on along with changing other
settings. The room still appeared to be dark.
In photo 3, again, that place was not dark. Setting the flash
to auto or on did not help.
In photo 4, everything including the room appears to be somewhat yellowish.
In reality, the wall is white and the pillows are gray.
madbird said:
what is wrong with pictures taken by the stock camera app? can you provide some example of a 'bad picture'?.
if you want an interface that is more DSLR like try https://play.google.com/store/apps/details?id=com.flavionet.android.camera.lite
here are some of my pics, i dont fell that the are of bad quality for a 'phone camera'.
http://www.flugbaerchen.de/lnkimg/egypt12/20120506_164915.jpg
http://www.flugbaerchen.de/lnkimg/egypt12/20120525_151334.jpg
http://www.flugbaerchen.de/lnkimg/egypt12/20120506_191654.jpg
Click to expand...
Click to collapse
Thanks for the suggestion but I am not a professional. I don't know how various settings affect the results. By the time I have tested out various settings, things that I want to capture will have been gone.
ah now things are getting clearer . your pictures looks a little bit like something is wrong with the 'white balance' of your camera. so you can try different settings for the white balance, the default should be automatic (AWB). I'm not an photoexpert too, but maybe some one else can guide you further with this.
Thanks for pointing this out. I also tried white balance but it did not help. Perhaps I did not do it properly. Hoping somebody could provide some tips. Are the strong glares from the ceiling lights in photo 1 also caused by the white balance?
hajime_android said:
In photo 1, I do not know why the ceiling lights are like that.
I changed various settings but there was no improvement.
In some cases, the overall color of the room changed.
Click to expand...
Click to collapse
This effect on the ceiling lights is due to a hardware fault, there are no settings within the phone that can correct this. You can try, like me, and use photoshop. For me, its no problem because I have used photoshop for many years, but others are not so fortunate. This fault is well documented. Samsung know about it, yet have done nothing to correct it. The only way is to send the unit back to the retailer for a new unit. I tried three or four brand new units and they were all the same.
In general. The camera has limitations because of its size and proximity to other circuitry that may introduce noise etc. Its 8megapix with a tiny lens, so as is, I feel it does a pretty good job (apart from that pink dot that is). To get better pictures, consider post processing with photoshop. If that's not an option, and quite frankly I would not recommend purchasing it just for pics from any camphone, try the GIMP, its free and does an awful lot to enhance your pics. You can find the GIMP here www.gimp.org it will run on linux, windows and the Mac
Hope that helps
So, getting something like Camera ZOOM FX won't help.
hajime_android said:
So, getting something like Camera ZOOM FX won't help.
Click to expand...
Click to collapse
Nope. sorry about that.
bigstarrynight said:
This effect on the ceiling lights is due to a hardware fault, there are no settings within the phone that can correct this.
Click to expand...
Click to collapse
Is there a name for this hardware fault? Does the S3 has this problem as well?
hajime_android said:
Is there a name for this hardware fault? Does the S3 has this problem as well?
Click to expand...
Click to collapse
Good question. I know the S2 does, and we all know about the Galaxy Note. I can see evidence of the problem on a slashgear.com presentation, and its that presentation that stopped me from going over to the S3. However, there are plenty of youtube tests where it seems pretty good. The S3 has only just been released, so it might be a while more before any issues become apparent. I think its one where you try before you buy. Personally, I'm not touching either the S3 or the 'Note until I have proof that the issue has been resolved.
Edit. The fault is commonly known as "the pink dot"
In photo 1 was the lens clean? Might sound obvious but even the slightest bit of grease or diet can affect how sources of light spear in photos. Typically in any photo I take where I light bulb or something similar is in the picture if the lens was not completely clean I got a similar effect as in photo 1
Sent from my GT-N7000 using xda premium
spfraggle said:
In photo 1 was the lens clean? Might sound obvious but even the slightest bit of grease or diet can affect how sources of light spear in photos. Typically in any photo I take where I light bulb or something similar is in the picture if the lens was not completely clean I got a similar effect as in photo 1
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
Well, there must be a lot of pink dirt around. My crappy clam phone must have pink dirt repellent, because no matter how greasy the lens gets, pics from it don't have a pink dot. Neither does my DSLR when the uv filter gets filthy, or my specs come to that. Sorry, but the dirt bit on this issue is a red herring. The camera has a defect.
I use UCam. A lot of "pro" settings and also some cool. And... you can disable shutter sound.
Sent from my GT-N7000 using Tapatalk 2
i think you should send the device to service/repair, because i think this is an hardware issue. i saw a lot of pictures taken by the note (not only my own device) and they are al just fine with the standard settings.
I just noticed that there is a protective film covering the back camera. Probably Samsung put it there to protect the lens. Do you think this is the cause to all of my problems? Am I supposed to remove it? For the first few days after purchase (3 weeks ago), the Note took excellent photos. As for last week and the week before that, it depends. The thin protective film has been there right from the beginning. Let's say the protective film covering the lens caused the pink dot, how do you explain why the cafe in photos 2 and 3 appeared to be dark whereas in reality, it was not. Also, photo 4 looks yellowish overall.
Hi,
Protective film would most likely create the effect on pic one. (which would be visible when a direct light source or reflection is in the frame.)
Pic two - could be a metering issue. Try changing the (cog wheel =>) metering setting and / or exposure level.
Yellowish photo is the result of incorrect "white balance". Change the white balance setting to incandescent.
I'm using both the stock ICS camera and camera zoom fx. On my previous phone the fx produced much better photos than the stock one. On my G - Note I don't see much difference.
Sent from my GT-N7000 using XDA
hajime_android said:
I just noticed that there is a protective film covering the back camera. Probably Samsung put it there to protect the lens.
Click to expand...
Click to collapse
Yes you are supposed to remove it. It does say so in the instructions that came with your phone. Check the camera after you have done this.
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
Hi everyone,
I'm having a problem with my Samsung Galaxy S4.
The front camera is producing blurred photos, almost as if they have been automatically edited/badly Photoshoped.
Before I capture a photo, the quality looks normal.
I've made sure the lens is clean and there is no plastic covering the lens. The same happens with Instagram... quality looks fine before capturing and then the same awful result afterwards.
Any help would be great!!
Anyone?
Can you post any photos you took with the front camera?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
[email protected] said:
Can you post any photos you took with the front camera?
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
Thanks for the reply!
Here is an example.
This is on the highest possible resolution but the same thing happens with every option. The quality is absolutely fine before I capture the photo and then, as you can see, it's as if a soft blur filter is added.
Any ideas?
Bump!
I think it's because the post procesing, which tries to reduce the noise for the cost of details (blury).
Try to take some photos in brighter enviroment.
ongbac said:
I think it's because the post procesing, which tries to reduce the noise for the cost of details (blury).
Try to take some photos in brighter enviroment.
Click to expand...
Click to collapse
That sounds about right.
I was trying out different apps and Snapchat captures what is on the screen and doesn't apply any after effect.
Have you got any ideas about how I can change some settings or something?
Bump!
Anyone?
Sent from my GT-I9505 using xda app-developers app
It's the camera. There's a definite lack of sharpness, and it happens on every ROM, so it's not software related.
Having the same issue.
Under good lighting, it's decent.
But under low light, or even under normal room lighting conditions, the image becomes grainy.
Even my previous S3 takes sharper and clearer images.
andrewhahalee said:
Having the same issue.
Under good lighting, it's decent.
But under low light, or even under normal room lighting conditions, the image becomes grainy.
Even my previous S3 takes sharper and clearer images.
Click to expand...
Click to collapse
Exactly. I just upgraded from S2 and never had these problems. My software has just updated but with no effect.
S4 Front camera, STRANGE.
Hi,
I was having problems with my S4 trying to make an ordinarily phone call. The phone seamed sluggish and my voice did not go through once I was connected. So, I switched to hangouts. I made a video call so I was expecting to see myself in the small picture on my screen. I did see a zoomed picture in good quality? Better quality I ever had seen before! I was surprised to see a good quality zoomed picture under poor light conditions. Since I am a computer guy I realized that something is fishy so I looked for an appropriate forum to put this story in.
My question is since you are talking about a suspected software filter. Are we without our knowing it have better camera performance than we the user are allowed to use? I do not buy the ROM explanation of the problem.
/duediligence
S4 Front camera, STRANGE.
Hi.
I had an encounter with something, well, alarming.
I had some problems making an ordinary phone call, sluggish phone, so I switched to hangouts instead.
I made a video call to my friend. For some reason the phone had not stopped being funny. In the small picture, the one of me, I saw something I never had seen before. Instead of the expected streamed image of me I had a zoomed in version in surprisingly good quality! I could see holding my phone, S4, at 30 to 40 cm distance my mouth covering the with of the image.
Question: I looked for an appropriate forum and thread before posting. Since you are here talking about the poor picture quality of the front camera being manipulated by a software filter you might be intrigued like me about this observation I had by chance stumbled up on.
My question is whether the cameras on our phones have capabilities we are not aware of?
/duediligence
Try taking the photo with the phone positioned on top of something, thus it will be steady. Have just tried taking a picture of some text 3 times and each was slightly blurred, took photo with phone on table and was spot on.
Shame that these phones don't have OIS
I must be having a shakey hand day!
Anti-motion blur scn mode help here at all ?
Finger prints or something on the lens, bad focus selection eg no good contrast variation for the camera to make a valid decision, or you have an issue hardware
Maybe your Z1 has some hardware issue. I always shoot handheld and no blur unless you are shooting in low light.
Sent from my C6902 using xda app-developers app
You can try to use the micro distance photography pattern.
If you phone still can't automatically focus, it may be the camera has broken.
LotoTutu said:
You can try to use the micro distance photography pattern.
Click to expand...
Click to collapse
Could you explain some more what you mean by this ?
One Twelve said:
Could you explain some more what you mean by this ?
Click to expand...
Click to collapse
I believe it's some kind of pattern that you can print out in order to test/adjust your lens's focus
Gathered as much with a quick google, thing is cameras must have a facility to make this adjustment.
The Z1 or any phone for that matter does not have it.
Hi Everyone,
Have a look at attached example image to see what I mean.
Please try to take a manual shot with your wide lens in a very dark environment with very high ISO (3200 in example) and exposure time of 5secs plus (20 secs in example).
Everyone who has tried that so far has the same issue, a big purple shadow on the top. It's most likely the laser and it won't happen with the normal lense.
Do you have the same result? Any suggestions what we can do about it?
Whoa! I haven't seen that in a long time. I think maybe around the time of the Nikon D80. I can't currently try this out personally but by the sounds of it what has happened is called Amp Glow. It's when you kind of start getting out of the bounds of what is really acceptable shooting conditions for a given sensor. In this case, if you really are shooting in conditions that call for high ISO AND still need a shutter speed of 20 seconds and the image still comes out that dark, then you're way beyond realistic expectations for shooting with a cellphone. In the older DSLRs, people would see it when doing star trail photos that were 10 minutes or longer. Frame stacking software became the solution to this problem by taking a lot of shorter photos and stacking them up and pulling through the new dots of light. (And this is still used by a lot of photographers as it also gets rid of other forms of noise.)
So what is happening? ISO is pretty much the gain. It's the amplification being applied to the signal coming off of the sensor. Ideally with ANY camera, you want to stay as close to the base ISO of a given sensor. That's usually the lowest ISO number. (There are some exceptions where some camera manufacturers have done some trickery to get a lower ISO to show up but that was short lived as it didn't really help things.) Unfortunately, image sensors are not hanging in space. They're packed in with a ton of other stuff. Stuff that gets warm. If that stuff is near an edge of the sensor, that heat bleeds into the sensor and then those warmed pixels get amplified by the higher ISO and next thing you know, Amp Glow. Well, that's the simplified version at least.
A cellphone, any cellphone, is not designed for those kinds of shots. If they were, they would have a tripod mount, a much better flash, and a much larger sensor. (Yeah, the flash on your cellphone is not meant to light up stuff much past 5 feet. Even the ones built into a DSLR aren't meant for much past about 15-20 feet.) The reality is that cellphones are designed for handheld shots with decent light. Even the larger sensor used in some cellphones shouldn't be expected to pull any miracles that top end DSLRs are just barely pulling off cleanly. For that shot, you would want to use a dedicated camera locked down on a tripod using base ISO and long exposure at the very least. Although, personally, I'd probably just take a pass on that shot.
someone on reddit has the exam same issue with the wide angle. and someone said it's in the regular too. weird. my s7 never had this purple hue when I did even 30 second exposure at night.
Sent from my LG V20 US996
something obstructing the lens maybe, or just camera went bad
Better hope this isn't the same problem the HTC one m7 had with the purple haze. The culprit was a light sensor on the camera would overhear and give a purple haze on the screen in low light. Place the phone face down and with the camera on and see if the purple comes back.
Sent from my LG-H910 using Tapatalk
Dark Jedi said:
Better hope this isn't the same problem the HTC one m7 had with the purple haze. The culprit was a light sensor on the camera would overhear and give a purple haze on the screen in low light. Place the phone face down and with the camera on and see if the purple comes back.
Click to expand...
Click to collapse
No, it won't happen with the same ISO/Shutter settings I took the previously attached photo. But maybe that's because it's not dark enough. Did the M7 issue only happen in dark enviornment as well?
CHH2 said:
Whoa! I haven't seen that in a long time. I think maybe around the time of the Nikon D80. I can't currently try this out personally but by the sounds of it what has happened is called Amp Glow. It's when you kind of start getting out of the bounds of what is really acceptable shooting conditions for a given sensor. In this case, if you really are shooting in conditions that call for high ISO AND still need a shutter speed of 20 seconds and the image still comes out that dark, then you're way beyond realistic expectations for shooting with a cellphone. In the older DSLRs, people would see it when doing star trail photos that were 10 minutes or longer. Frame stacking software became the solution to this problem by taking a lot of shorter photos and stacking them up and pulling through the new dots of light. (And this is still used by a lot of photographers as it also gets rid of other forms of noise.)
So what is happening? ISO is pretty much the gain. It's the amplification being applied to the signal coming off of the sensor. Ideally with ANY camera, you want to stay as close to the base ISO of a given sensor. That's usually the lowest ISO number. (There are some exceptions where some camera manufacturers have done some trickery to get a lower ISO to show up but that was short lived as it didn't really help things.) Unfortunately, image sensors are not hanging in space. They're packed in with a ton of other stuff. Stuff that gets warm. If that stuff is near an edge of the sensor, that heat bleeds into the sensor and then those warmed pixels get amplified by the higher ISO and next thing you know, Amp Glow. Well, that's the simplified version at least.
A cellphone, any cellphone, is not designed for those kinds of shots. If they were, they would have a tripod mount, a much better flash, and a much larger sensor. (Yeah, the flash on your cellphone is not meant to light up stuff much past 5 feet. Even the ones built into a DSLR aren't meant for much past about 15-20 feet.) The reality is that cellphones are designed for handheld shots with decent light. Even the larger sensor used in some cellphones shouldn't be expected to pull any miracles that top end DSLRs are just barely pulling off cleanly. For that shot, you would want to use a dedicated camera locked down on a tripod using base ISO and long exposure at the very least. Although, personally, I'd probably just take a pass on that shot.
Click to expand...
Click to collapse
Thanks a lot for the detailed explanation. My question here would be, why doesn't it happen to other phone-cameras with similar settings?
Kujoja said:
No, it won't happen with the same ISO/Shutter settings I took the previously attached photo. But maybe that's because it's not dark enough. Did the M7 issue only happen in dark enviornment as well?
Thanks a lot for the detailed explanation. My question here would be, why doesn't it happen to other phone-cameras with similar settings?
Click to expand...
Click to collapse
Yes the m7 only happened in low light / dark environment. Do a Google search for HTC one m7 purple haze. What caused me not to buy another htc phone
Sent from my LG-H910 using Tapatalk
Kujoja said:
No, it won't happen with the same ISO/Shutter settings I took the previously attached photo. But maybe that's because it's not dark enough. Did the M7 issue only happen in dark enviornment as well?
Thanks a lot for the detailed explanation. My question here would be, why doesn't it happen to other phone-cameras with similar settings?
Click to expand...
Click to collapse
Settings aren't the only part of the equation. The other par is the placement of other components within the device. I need to look at the tear downs to see how the various parts are placed next to each other but something is heating up and passing that heat to the sensor. Just off the top of my head there are four parts together; the two camera sensors, the laser focus module, and the flask module. Each one of those on its own will generate heat if used enough.
Dark Jedi said:
Yes the m7 only happened in low light / dark environment. Do a Google search for HTC one m7 purple haze. What caused me not to buy another htc phone
Sent from my LG-H910 using Tapatalk
Click to expand...
Click to collapse
It's the same issue. I haven't looked at the HTC issue but from your description of it, it's the same. Amp glow is what it is called in digital photography. (OK, silly that I said digital as you don't get amp glow in film.) The glow will show up because there is no other data coming off of the sensor for those pixels and the heat is amplified as "data".
---------- Post added at 05:15 PM ---------- Previous post was at 04:59 PM ----------
Ok, just watched the JerryRigEverything repair tear down. The flash module sits right next to the wide angle and the laser focus next to the regular sensor. There is no mention as to what is sitting next to the sensors on the main board but I see silver boxes on each side with one having some sort of black and yellow warning sticker. Not sure what they are so I can't rope them in as culprits. So for now, I'd say it's a combo of the four units of the camera assembly.
Were you running the flash or one of the cameras a lot while you were playing around? Shooting a lot of long exposure shots in a row?
I'll get to test out some night shots and video tonight at a lighting ceremony but I'm still not expecting to shoot 3200 for 20 seconds type shots. Again, that's pretty extreme.