I want to remove the light of the fingerprint. I was reading that burn the amoled screens in OnePlus and i hate that light.
How i can remove it.
I know u can´t remove it with the rom, so i image that i need a mod.
Thanks.
You can't remove the light. The reason is that the in-display fingerprint scanner is an optical one. This means that behind the screen there is a very small camera that takes photos of your fingerprint. In order to do that it needs light, hence the illumination you see. You shouldn't worry about it. It lights only for a fraction of second which isn't enough to cause a burn in. Xiaomi's engineers have thought of that.
giannism13 said:
You can't remove the light. The reason is that the in-display fingerprint scanner is an optical one. This means that behind the screen there is a very small camera that takes photos of your fingerprint. In order to do that it needs light, hence the illumination you see. You shouldn't worry about it. It lights only for a fraction of second which isn't enough to cause a burn in. Xiaomi's engineers have thought of that.
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OK, thanks u. I was worry because i read that the light cause burn on oneplus screens, for that my doubt. But ok, thanks u
Related
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.
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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.
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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?
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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?
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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
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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.
Seems on the far right at the top of the phone, the Iris Scanner's blue light or whatever is always on. It's almost like a notification light that never turns off. Anyone else seeing this?
Semantics said:
Seems on the far right at the top of the phone, the Iris Scanner's blue light or whatever is always on. It's almost like a notification light that never turns off. Anyone else seeing this?
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Thats just the color of the lens
YellowGTO said:
Thats just the color of the lens
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Makes sense as it's an IR camera, reflective coating to reject most visible light.
YellowGTO said:
Thats just the color of the lens
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Thanks. It's the one thing about the phone I do not like. Its quite reflective and distracting while looking at the screen.
I must admit I didn't notice this last night when inside, however when I used it this morning in daylight it is pretty blue. Quite annoying really but I suppose I will get used to it
i have been having the same issue with the light blue light. its not the lens or reflection either. most of the time its on and hurts my eyes if i look at it to long. that or maybe its just big brother watching 24/7. haha
Does anyone else glance at the phone and think the front facing camera is a dim blue led?
Nothing I can do about this, but I just wanted to know if this has been bothering anyone else.
That and with the always on screen, I keep thinking I'm the worlds most popular guy today but really no one is texting me... haha
I think it's just going to take some getting used to...
I think it might be the iris sensor. It's an IR sensor so has visible light filter that I've heard reflects blue and can look like a blue LED.
Hi, everybody. is it possible to change the color of the green circle when you click on the fingerprint scanner?
trend.78 said:
Hi, everybody. is it possible to change the color of the green circle when you click on the fingerprint scanner?
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Green is apparently the preferred color for skin reflectivity sensors
Since the actual fingerprint sensor (camera) itself probably creates an inverted image of the light reflected to detect darkness and lightness in an image it probably is solely intended to work with green light.
Trust me I would love a new color. Blue maybe, which are apparently usually the first pixels to go dim and dead in an OLED panel so probably not a good option... Red? Meh
White? Ehh
I personally prefer to not have to have my finger illuminated at all to unlock my phone
Causical said:
Green is apparently the preferred color for skin reflectivity sensors
Since the actual fingerprint sensor (camera) itself probably creates an inverted image of the light reflected to detect darkness and lightness in an image it probably is solely intended to work with green light.
Trust me I would love a new color. Blue maybe, which are apparently usually the first pixels to go dim and dead in an OLED panel so probably not a good option... Red? Meh
White? Ehh
I personally prefer to not have to have my finger illuminated at all to unlock my phone
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thanks for the clarification, friend. and you can do something that would not be highlighted?
trend.78 said:
thanks for the clarification, friend. and you can do something that would not be highlighted?
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Huh? No that's not how this fingerprint sensor works.
trend.78 said:
Hi, everybody. is it possible to change the color of the green circle when you click on the fingerprint scanner?
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Apparently it is possible to change the highlight color I've read about it before but it was really vague on how to do it.
It's probably possible to do with root, as people have changed the color of the actual fingerprint icon, but I wouldn't count on it.
Under display fingerprint readers work best with green shining through.
This is my second week with this unit and it's awesome so far! Took some time for the battery life to get up to par, but got that sorted out and now it's a beast!...like the title suggests though, I do have a question about the ultra wide camera. Can someone try going into a dark room, covering the camera lens when the ultra wide camera is activated, and see if you notice light bleed on the view finder when in 3:4 aspect ratio and no filter on? I notice slight light leakage onto the screen if you look around the edges of the viewfinder. You don't have to cover the lens because it is noticeable in really low indoor light conditions or if the room is extremely dark. The other two lens under the same conditions seem fine. It's not a deal breaker or anything, nor will I return the phone, just wondering if anyone else notice. It's very slight. In decent to good light conditions, you don't notice it at all. And I will say that it doesn't show on pics at all. This is just my OCD kicking in lol. The cameras are actually the best I've used on a phone!
I decided to take a screen shot. Take a look at the upper left hand side. Do you see the light leak? With the other camera lens, the viewfinder is pitch black to match the pitch black scene. If indoors and the light conditions are bad, you'll see the distortion on the viewfinder, but the pic will turn out perfect. Only if you do motion picture do you see it a bit. Anyone have this or an explanation? Definitely not enough for me to return the device, but just wondering if it's normal? Zoom into the photo I attached and you'll see it at the top left.
No one can quickly try this and confirm?
Do you have a camera protector applied?
NickosD said:
Do you have a camera protector applied?
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No, no protector applied. When I called Samsung, the rep told me it's normal and her unit does the same. I still don't know. But if you tested in a dark room and you don't get it, that means not every unit has it.