[Q] dead pixels on rear camera? - Nexus 5 Q&A, Help & Troubleshooting

Has anyone experienced this problem with the n5 camera? I have 2 marks on my pictures and on the screen whilst I'm taking pictures, I think there's something wrong with the camera sensor, only had the phone a couple of month. I've zoomed in on one picture. Should I try to get it replaced?

The shape if the first image looks too organic to be dead pixels to me. Looks more like fluff. I assume you've cleaned the "lens"
Sent from my Nexus 5 using Tapatalk

looks like dust or dirt. the camera cant have a dead pixel, theres no pixels. the camera uses a lens. your screen has pixels, screens can have dead pixels.

simms22 said:
the camera cant have a dead pixel, theres no pixels. the camera uses a lens
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Film based cameras have a lens. Digital cameras have both a lens and a sensor. The sensor and the screen both have pixels.
However, this looks more like object obstruction than failing pixels on the sensor
Sent from my Nexus 5 using Tapatalk

Related

Blurry photos

Just having issues with the photos on the One xl. It seems the photos are very blurry and does not take bright light well too.
Here are some examples.
tez1 said:
Just having issues with the photos on the One xl. It seems the photos are very blurry and does not take bright light well too.
Here are some examples.
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Are you using any rom that has focus issues present?
tez1 said:
Just having issues with the photos on the One xl. It seems the photos are very blurry and does not take bright light well too.
Here are some examples.
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Have you tried cleaning the lens? When ever my photos come out like that, i just give the lens a good wipe down and the pictures come out a lot better
Im using cleanROM which as far as I know has no issues with the focus.
I have cleaned both the outside and inside cover and still the same
tez1 said:
I have cleaned both the outside and inside cover and still the same
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So it sounds like you took the phone apart, in order to clean the inside of the cover? have you ever taken it apart before? Maybe you got a smudge on the tiny lens itself, and not just the cover on the casing?
Are you sure all settings are default? Default is ISO and White Balance on "Auto", and Image Adjustments, all (Exposure, Contrast, Saturation) should be zero.
Does lowering the exposure help any?
This looks like an exposure problem, or a smudge on the lens or cover, rather than a focus problem. The focus actually seems ok.

Is the front facing camera lousy?

The front facing camera on my One X is horrible. The selfies are washed out and extremely low res, nowhere near the quality from my Droid Razr that has the same megapixel count. What could cause this? Does the proximity sensor have anything to do with the camera? I have a screen protector and it has a cutout for this sensor but I don't know if the cutout is big enough since I can't see the sensor. I have not taken a picture w/o the screen protector installed. Anything else I should be looking at?
The proximity sensor has nothing to do with the front facing camera. In all honesty, it doesn't take great pictures. You might have some dust built up in there, try cleaning it out with a cotton bud.
Sent from my Evita
timmaaa said:
The proximity sensor has nothing to do with the front facing camera. In all honesty, it doesn't take great pictures. You might have some dust built up in there, try cleaning it out with a cotton bud.
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Thanks. I did that after doing a search on the issue (which I should have done before my post-my bad) and the difference is night and day. I never would have guessed a lens could get so dirty that it would literally make a camera unusable but now I know it can.

Rear camera distortion

Just noticed that when things are in the top portion of the picture with the camera tilted down slightly things get distorted. It makes heads oblong and alien looking. Wondering if other people have this same issue or if it's just my phone. So it's really a question of whether the phone is being exchanged or returned.
I've attached two pics. When the tv is in the top portion of the pic it looks a lot taller than when it's in the center of the pic. Both pics were taken from the same distance at the same zoom amount.
Did you take the plastic film off the lens that comes from the factory?
s197 said:
Did you take the plastic film off the lens that comes from the factory?
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I was gonna say the same! Although mine lately has not been focusing at all unless i shake it. View is immediately blurry, but up close to something it is fine. Like it is stuck in close up. Shake it and seems good. This is before ROOT and playing around. Any ideas?
s197 said:
Did you take the plastic film off the lens that comes from the factory?
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Did you have a plastic film on your camera? I had one over the fingerprint sensor but if there is one on my camera it's near impossible to detect, I feel like I'm just scratching at the glass although my fingernail is definitely catching on something. I just cant tell if it's the edge of the glass for the camera or a film covering it.
i had the same issue so i boiled my kettle, and held the phone above it after it boiled and let the steam peel the lense sticker.
omgi0wn said:
Did you have a plastic film on your camera? I had one over the fingerprint sensor but if there is one on my camera it's near impossible to detect, I feel like I'm just scratching at the glass although my fingernail is definitely catching on something. I just cant tell if it's the edge of the glass for the camera or a film covering it.
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If you had the plastic on it, you'd know it. It was very noticeable on mine.
droidiac13 said:
If you had the plastic on it, you'd know it. It was very noticeable on mine.
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I really can't tell if it's there, if it is it lines up almost perfectly. It isn't causing me issues for now though so I'm not going to mess with it.
omgi0wn said:
I really can't tell if it's there, if it is it lines up almost perfectly. It isn't causing me issues for now though so I'm not going to mess with it.
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You would notice in the center of the lens. The plastic would have a cut. Once it's off, the lens is perfectly flat across the top.
The plastic was still on, but no change in distortion taking it off. I'm guessing the cutout in the center of the plastic makes it so it doesn't impact photos.
So I tested on my computer monitor and am able to somewhat replicate what is happening in your shots. However, this distortion is natural because you're tilting the camera downwards on its axis. Its called perspective lens distortion and is common to all cameras without a tilt shift lens (a lens that costs several thousand dollars). You should be able to replicate the effect with any camera phone.
Yeah I've noticed distortion in other cameras but it's just not so extreme. On the s6 the distortion makes any pics with the subject on the edge ridiculous and unusable.
I think I've narrowed it down to when the s6 is set up to shoot max resolution at 16:9. When I switch it to 4:3 the distortion is pretty much gone since that distorted area is just cropped out but that reduces it from 16mp to 12mp. Other phone cameras I've had (moto x 2nd gen and s3) crop the other way (max resolution at 4:3 and then crop to get 16:9).
So the s6 presumably has a 16:9 sensor where the others had 4:3. But the extra width is pretty much unusable.
I'm not sure how I feel about this. What's the point of having a 16mp camera if you can only effectively use 12mp?
Any update on this? I was hoping there's a post processing software in Android/Windows/OSX that can compensate for the lens distortion even though it'll reduced the resolution a bit. I have a AT&T Galaxy S6.
I tried DXO Optics Pro 8, and it works very good for shots from my Nikon D7000 to un-alienize the faces, but there are no modules for the Galaxy S6 lens.

Rear camera too bright.

S7 snapdragon sony lens. When I take photos using the rear camera they come out too bright / over exposed. The front camera produces better point and shoot images. Also, the rear lens gets dirty very easily. I've come from a moto g4 plus and had no such problems. Has anyone got any suggestions?
Check you're using AUTO mode for the camera and the exposure level slider when you tap the screen to focus is not all the way up
As for the dirty lens, that's down to how you use your phone, either get a case or be more careful not to touch the lens, I always wipe mine on my top before taking pics, takes 2 seconds and easy to get into the habit

Question How many have Lens Flare issue?

The more I read, the more it seems that P7P users have got a bad Lens Flare issue on the X1 Lens.
Out of curiosity, how many users here have the issue themselves?
I used to have the Mate 20 Pro for 4 years and the Lens Flare wasn't that bad in comparison to the P7P.
I'll add that I don't have a lens cover over my cameras and the glass is clean.
Everyone, that's just the nature of the beast.
1gavinr said:
The more I read, the more it seems that P7P users have got a bad Lens Flare issue on the X1 Lens.
Out of curiosity, how many users here have the issue themselves?
I used to have the Mate 20 Pro for 4 years and the Lens Flare wasn't that bad in comparison to the P7P.
I'll add that I don't have a lens cover over my cameras and the glass is clean.
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That's not an "issue", everyone has the lens flare. It only depends on the light angle and how it hits the lens.
It's pretty bad. I took some comparison photos with my S21 before I sent it in for trade and the flare was awful. And non-existent on the Samsung photos.
This was taken with a Canon DSLR and a £2000 Canon L lens, there are always circumstances where it is going to happen.
issasaurus said:
It's pretty bad. I took some comparison photos with my S21 before I sent it in for trade and the flare was awful. And non-existent on the Samsung photos. View attachment 5762543View attachment 5762541
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Different focal lengths though so not a fair comparison.
MrBelter said:
This was taken with a Canon DSLR and a £2000 Canon L lens, there are always circumstances where it is going to happen.
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If it happens in some circumstances and only once in a while, its OK. But I think p7p has a permanent problem.
One request for folks who experience it: can you try a case (or any other way) which covers most of the aluminum? I think the reflections off the aluminum are adding to the flare phenomenon.
IMO, going with shiny metal around the lens was not a smart choice by google. Get the wrong curves on that part and it can mess with the light that goes into the lens.
devsk said:
If it happens in some circumstances and only once in a while, its OK. But I think p7p has a permanent problem.
One request for folks who experience it: can you try a case (or any other way) which covers most of the aluminum? I think the reflections off the aluminum are adding to the flare phenomenon.
IMO, going with shiny metal around the lens was not a smart choice by google. Get the wrong curves on that part and it can mess with the light that goes into the lens.
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It does only happen in some circumstances though and only once in a while on the Pixel 7 Pro to be fair and those circumstances are using the 1X lens while it pointing it at something very bright and this is when lens flare is always a risk.
The problem is a lack of any anti reflection coating on the glass covering the lens, it is just plain glass sadly. I have wondered if we could use something as a lens hood which should help dramatically with the issue as it stops light from falling across the lens.
FWIW i have a black skin over my camera bar, it certainly made a difference one the P6P but it makes no difference whatsoever on the P7P
Using a different focal length other than 1X the problem is much, much less noticeable.
I see the issue across all lenses. That's why I think its the metal, not the lenses or the glass covering the lenses!
Any kind of coating will reduce the amount of light that the lens can capture. Is anti-reflective coating an industry standard across lenses?
hmm....quick google suggests that lack of anti reflective coatings on lenses may be the reason for this unusual issue. Which means that we are stuck with it...
And it does look like that anti reflective coating is the norm and it actually increases the light that reaches the sensor....Why would google hardware not do this? go figure!
devsk said:
I see the issue across all lenses. That's why I think its the metal, not the lenses or the glass covering the lenses!
Any kind of coating will reduce the amount of light that the lens can capture. Is anti-reflective coating an industry standard across lenses?
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As i said, i have a black skin on my camera bar, there is no metal showing.
Any lens worth its salt be it camera or glasses will have an anti-reflective coating.
Why Lens Coatings Are So Important in Photography
A look at the science of camera lens coatings and how they improve optics while reducing things like lens flares in photographs.
petapixel.com
devsk said:
hmm....quick google suggests that lack of anti reflective coatings on lenses may be the reason for this unusual issue. Which means that we are stuck with it...
And it does look like that anti reflective coating is the norm and it actually increases the light that reaches the sensor....Why would google hardware not do this? go figure!
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They have on the lenses, they just didn't bother on the class covering them.
MrBelter said:
They have on the lenses, they just didn't bother on the class covering them.
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Any idea if it can be applied after the fact from the outside? Or is it something that has to be cured into the glass before putting it on the frame?
devsk said:
Any idea if it can be applied after the fact from the outside? Or is it something that has to be cured into the glass before putting it on the frame?
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That i don't know, i wouldn't want to risk buggering the whole thing up myself as any coating has to bond to the glass and getting it back off could be difficult.
The fix may be as simple as holding your hand above the lens like a simple lens hood to prevent light scatter.
I went to a Christmas light switch on last night and the lens flare and the simple reflections you get from the plain glass doesn't half make you study the scene to try to get around it, that in its self makes spontaneous street photography at night difficult.

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