Database Users

Front Camera Low Light Pink/Purple tint..

Anyone got a purple overlay on their front camera when there is no light?

I get heavy purple or blueish vignetting with the front camera in low light, but only with the stock camera app.
First pic is from stock app, second one is from Google Camera.

Does anybody else see what Fuzalert2k sees when the camera is covered, i.e. dark? That means the image enhancement algorithm goes crazy in low light conditions. Does your camera work normally otherwise?
PS: there's already a thread on this: http://forum.xda-developers.com/z3-compact/general/camera-pink-spot-poll-t2933507/

Iruwen said:
Does anybody else see what Fuzalert2k sees when the camera is covered, i.e. dark? That means the image enhancement algorithm goes crazy in low light conditions. Does your camera work normally otherwise?
PS: there's already a thread on this: http://forum.xda-developers.com/z3-compact/general/camera-pink-spot-poll-t2933507/
Click to expand...
Click to collapse
Yes, the purple hue is also apparent in not-so-low light as you can see from my sample.
No, it's not the same phenomenon at all. This effect is only visible in the end result picture and it's the entire picture rather than just a spot within it. This is also not related to white balance, just seems to be a problem in the post-processing of the stock camera app specifically.

degraaff said:
Yes, the purple hue is also apparent in not-so-low light as you can see from my sample.
No, it's not the same phenomenon at all. This effect is only visible in the end result picture and it's the entire picture rather than just a spot within it. This is also not related to white balance, just seems to be a problem in the post-processing of the stock camera app specifically.
Click to expand...
Click to collapse
Yeah definitely not the same thing.
Look's like I'll be using Google Camera in future.
I must say Sony really dropped the ball on the Z3C camera software, and have yet to fix it or even acknowledge it.

I come from the HTC One.
The "pink hue when dark situations" was a well known problem there.
For soem time HTC used faulty camera sensors, which caused this problem.
If you experience sthis problem with your HTC One you can send your device in and get a replacement.
I hope that this is not the same wit the Z3Cs.
I for myself can't reenact this behaviour with my Z3C.

Icefeldt said:
I come from the HTC One.
The "pink hue when dark situations" was a well known problem there.
For soem time HTC used faulty camera sensors, which caused this problem.
If you experience sthis problem with your HTC One you can send your device in and get a replacement.
I hope that this is not the same wit the Z3Cs.
I for myself can't reenact this behaviour with my Z3C.
Click to expand...
Click to collapse
You are trying it with the front facing camera, are you?
It wouldn't make sense if it was a faulty sensor because it only happens in the stock camera app.

Now went into a completely dark room.
You are right, with the front cam, there is little bit of pink hue on the edges.
Yes, it is very "good" that it's only visible with the stock app.
Therefore the sensor should be okay.

--------------------------------------------

Nexus 6P: Camera Issues (Hot Pixels?)

6P Camera issues (hot pixels?)
I'm having issues with my brand new Nexus 6P device. While taking HDR+ photos under low light conditions, or using the flash with HDR+ I see a red dot on the right corner (vertical) or very center top (horizontal) in each single photo, while it is processing the image. After processing is done, the dot is being filtered out by the software, but I don't think this is normal... Since the dot is always in the same place. I have a few sample photos of how it looks in low light but not allowed to post links here yet.
The red dot does not appear when HDR+ is switched off, or when there's plenty of light when taking the photo.

I'm guessing nobody else has this issue, or I'm worried for nothing. It's just peculiar how the red spot is always at the exact same place, while processing. That got me wondering if there is something wrong with it.

I have not had this issue on the Nexus 6P. However, I've had this issue on a Canon digital camera before, although the dot appeared in all my photos!
What I can tell you is that stuck/hot pixels are common. In fact, almost all camera sensors are produced with some amount of bad pixels (on accident of course, just part of manufacturing tiny things), but they simply modify the firmware to edit the pixel out. This only works so long as there aren't a ton of bad pixels or no new bad pixels arise after the camera is shipped out. In the case of my Canon camera, I had to send it back under warranty for them to modify the firmware and map out the bad pixel. Later, when I got more bad pixels out of warranty, I sideloaded custom software on the camera to map out the new ones myself.
Now, what may be happening in your case is that the Nexus 6P firmware is designed to try to map out bad pixels on the fly. Does the dot appear in any final photos, or just in the processing preview? Either way, I would suggest contacting customer support immediately as your phone may require a replacement to prevent it getting any worse!

Hannes084 said:
I'm having issues with my brand new Nexus 6P device. While taking HDR+ photos under low light conditions, or using the flash with HDR+ I see a red dot on the right corner (vertical) or very center top (horizontal) in each single photo, while it is processing the image. After processing is done, the dot is being filtered out by the software, but I don't think this is normal... Since the dot is always in the same place. I have a few sample photos of how it looks in low light but not allowed to post links here yet.
The red dot does not appear when HDR+ is switched off, or when there's plenty of light when taking the photo.
Click to expand...
Click to collapse
Check to see if there is any bleed on the screen, I had something vaguely similar on my s3 where I had some black dots, visible only in certain conditions, there is a screen test app which allows the screen to be on but whilst it's blacked out, at certain angles you can see the blotches.
Apogies if this isn't the case...
If not, take pics of clear and bright images eg: a white piece of paper or anything light and clear, take shots with different effects turned on on the camera to see if you can capture the speck.
If it does indeed appear to be a hardware fault the only fix is going to be a return or a hardware fix.

V20 Bug - Purple Shadow when Taking Night Pics with Wide Lens

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.

Horizontal Lines on Moto g5 Plus Display.

There horizontal lines on moto g5 plus display which can be seen in at perticular angle in direct sun light or artificial lighting conditon.
Some users have this issue and some not.
So is this normal or should i replace my phone.
And what is the reason behind this?
PLEASE HELP!!!!

Dush4711 said:
There horizontal lines on moto g5 plus display which can be seen in at perticular angle in direct sun light or artificial lighting conditon.
Some users have this issue and some not.
So is this normal or should i replace my phone.
And what is the reason behind this?
PLEASE HELP!!!!
Click to expand...
Click to collapse
This is not an issue bud. Your screen isn't defective at all. This is the limitation of ips panel. Some/very few users who aren't able to notice(including me) might have not good eyes like ur's
So don't panic. Just relax and enjoy this device

Dush4711 said:
There horizontal lines on moto g5 plus display which can be seen in at perticular angle in direct sun light or artificial lighting conditon.
Some users have this issue and some not.
So is this normal or should i replace my phone.
And what is the reason behind this?
PLEASE HELP!!!!
Click to expand...
Click to collapse
It's is not a issue with the device.It is some kind of sensors for Moto display.Turn Moto display off and it vanishes.This issue has been raised in one of the forums in lenovo , to which they replied that it is a sensor and not a display defect.So chill!

The horizontal lines are available in each and every device. The one who tells that they haven't noticed it, they might have not seen it properly. To see it you have to revise your geometry and have to see it at different angle under sunlight with hawk eyes.

I have noticed this on my G5 plus and it is normal (as in it doesn't hamper the functionality or doesn't imply malfunction).
See the photo
They are the touch sensor patterns. However, I also came across another G5 plus(one of my friend's) which has a different patterns (grids instead of horizontal lines) and they are barely visible even in bright outdoors.
The kind of sensor pattern you're talking about(only horizontal lines) are however, have more visibility, which kind of disappointing, and are hard to be unnoticed once you see them . So, there are two types of displays on G5 plus, and those who have the grid sensor patterns are the lucky few.

Thank you all for your kind reply.

I have the same issue... I dont like it but i want to keep the phone... Don't know if i want to return it beacause of this.

I was concerned about the horizontal faint white lines in my display. Thanks @williamj949 for explaining it's part of Moto Display. Confirmed that they go away if you turn it off. Good to know the display isn't faulty.

It's the digitizer's (touch sensing layer beneath the glass) grid.
Actually its been awhile since I've seen it on a phone (last one I saw was on Nexus 5s), guessing it's just the side effect of buying a medium-tier priced phone.
I'm. totally cool with it though, you don't notice it after a while.

williamj949 said:
It's is not a issue with the device.It is some kind of sensors for Moto display.Turn Moto display off and it vanishes.This issue has been raised in one of the forums in lenovo , to which they replied that it is a sensor and not a display defect.So chill!
Click to expand...
Click to collapse
It has nothing to do with Moto display, it will still be visible as it's a hardware thing
Sent from my Moto G (5) Plus using Tapatalk

rayzen6 said:
This is not an issue bud. Your screen isn't defective at all. This is the limitation of ips panel. Some/very few users who aren't able to notice(including me) might have not good eyes like ur's
So don't panic. Just relax and enjoy this device
Click to expand...
Click to collapse
I'm used to oled panel and now I'm using g5 plus. I can see the lines and now it's really bugging me.

I know what's wrong with g5plus camera.

The highlighted thing about g5 plus was also the reason for bad camera. The 1.7 aperture and wide angle camera are the cause here. Though it is good for shots within a certain distance like 10-15 feet. But any further the pictures loose sharpness and gets noisy due to which moto decided to use high denoising due to which the photos look soft. My father's redmi 4 clicks better distance pictures than this. It has 2.0 aperture and little less wide angle lens.

Don't forget that G5 Plus have the same camera sensor as HTC U11 or Asus Zenfone 4 (which takes good pictures on stock software).
Worse photo quality is caused by software (Motorola/Lenovo screw it up).
Did you tried any mods/apps? You can find a lot of these, but I suggest you to try Google camera app port.

.czarodziej said:
Don't forget that G5 Plus have the same camera sensor as HTC U11 or Asus Zenfone 4 (which takes good pictures on stock software).
Worse photo quality is caused by software (Motorola/Lenovo screw it up).
Did you tried any mods/apps? You can find a lot of these, but I suggest you to try Google camera app port.
Click to expand...
Click to collapse
I use bacon camera on stock Android without root.
I disabled noise reduction and use hdr with manual mode and stable hands to get though grainy but nice pictures. Though the app is not perfect but it works

When I first got the G5+ I thought the camera was too dark... While a lower aperture may help in low light shots it does cause a bit of trouble for highly illuminated scenes.
HDR does compensate but it's nothing like HDR+ from Google.
Plus, terrible sharpen and overdone Noise Reduction excessive Color NR.
I felt quite dissapointed comparing it to my old Titan (G2)

Anyone tried to mod the camera to enable debug mode? You can disable noise reduction from there

ugupta100 said:
The highlighted thing about g5 plus was also the reason for bad camera. The 1.7 aperture and wide angle camera are the cause here. Though it is good for shots within a certain distance like 10-15 feet. But any further the pictures loose sharpness and gets noisy due to which moto decided to use high denoising due to which the photos look soft. My father's redmi 4 clicks better distance pictures than this. It has 2.0 aperture and little less wide angle lens.
Click to expand...
Click to collapse
Coming from an old school enthusiast of photography background - you're aperture on your lens (in this case f1.7) isn't going to cause noise - that's a function of the sensor. A lot changed when we went from film to digital sensors, but the impact of the f number of the lens did not.
You might be on to something with the with loss of sharpness though. Typically a fixed focal length lens is at it's sharpest at it's only setting... but they very well could have forked this up.
Given that the camera does pretty adequately with other camera software or other hacks - I don't think it's a hardware issue or lens issue. It could be a cut rate sensor...
It could also just be that whomever chose the default settings for this camera did a bad job

pwag said:
Your aperture on your lens (in this case f1.7) isn't going to cause noise - that's a function of the sensor. A lot changed when we went from film to digital sensors, but the impact of the f number of the lens did not.
Click to expand...
Click to collapse
What about shadows in bright scenes such as outdoor scenery?
I mean, wouldn't lens aperture like f2.2 preserve more of these details?

That's a function of the film/sensor.
Your f number controls light and the depth of field (area that's in focus) - a smaller f number is more desirable because it allows more light to the film/sensor.
The only thing different here than fine that I can see is the size/diameter of the lens related to the f number. A larger f number, like f 8 or f16 increases the depth of field and sharpness, but at the cost of light hitting the film/sensor. That results in a longer exposure time.
A wide open f stop means more light and shorter exposure times.
One thing we gained with sensors over film is a wider range between highlights and shadows... You could get more shadows and more highlights. Film could get only so much of that before shadows went black and highlights blew out to white. But you still have a limited range. You can't get it all. In order to keep the highlights from going completely white you have to trade off some of the shadow range.
It's early and I'm probably explaining this horribly. Your spectrum between black and white or shadows and highlights is very long. But your camera sensors capability can only encompass a range of that spectrum. If the spectrum were a line of shades of grey from black to white that was, say, 10 units long, the range you could get in one image might be six units long. You've gotta give up somcombo of four units either at the black end of the spectrum or the light side.
If the cameras loaing details in the shadows that's because it's opting to the highlight/light end of the range.
So lens doesn't play a huge role in what chunk of the spectrum the film/sensor can encompass. But does play a role in how quickly the sensor can collect that info. Higher f number = smaller amounts of light on the sensor = longer exposure times.
My guess would be that the sensor or software is biased toward highlights because it results in faster exposures making life easier for snap shots and selfies.

M1810 said:
Anyone tried to mod the camera to enable debug mode? You can disable noise reduction from there
Click to expand...
Click to collapse
If you guys paid attention for once on this XDA, you might have seen my damn thread or the chromatixx thread https://forum.xda-developers.com/g5-plus/how-to/workaround-noise-reduction-t3744031
https://forum.xda-developers.com/g5-plus/themes/modcamera-aggressive-sharpening-noise-t3604458