Red LED by rear camera - Samsung Galaxy S8 Guides, News, & Discussion

I've noticed that if you open the stock camera app, switch to the front facing camera mode and then put your hand over the back camera, a red LED turns on. Anyone else noticed this, wondered what's it for and if it's controllable with root or a third party app?
Edit: Turned out to be the heart rate sensor xd

That's the heart rate sensor. One of the ways you can take selfies. Once the camera detects your face, put your finger on the heart rate sensor and it'll take the picture.

ronii_lyn said:
That's the heart rate sensor. One of the ways you can take selfies. Once the camera detects your face, put your finger on the heart rate sensor and it'll take the picture.
Click to expand...
Click to collapse
Thanks

Related

[Q] Problem with Camera? Blue ring.

When I start the camera I get this blue ring in the center of the picture, if I take a picture it will show in the picture as well. Anyone else having this issue?
Is it a sharp blue ring, generated by software, or some kind of artifact like a light leak? Do both cameras have it? Are you using the default camera application? Can you post one of the pictures?
brachiopod said:
Is it a sharp blue ring, generated by software, or some kind of artifact like a light leak? Do both cameras have it? Are you using the default camera application? Can you post one of the pictures?
Click to expand...
Click to collapse
I guess I am the only one with this problem. I updated the firmware yesterday but it's still there, as you can see just the blue or purple ring in the center.
Is that on the shots with the other camera too?
Is it on all the shots?
If not, is there some unusual lighting for that shot?
I ask the last because as a photo guy, that looks like the type of thing that you see with internal reflections with the IR filter over the CCD under some lighting conditions, e.g. an incandescent light just out of the frame at the right angle for that shot. Again, is it on all the shots? Again, is it on the shots with the other camera too? If it is on all the shots you might have a problem, it does look like an artifact.
What you're looking at is refraction caused by light hitting from an angle (like lens flare) and bouncing around on the inside and hitting back at the inside of the glass and the glass is now acting as a backdrop. Just a wild guess. Best thing to try is to block the lens to kill the light completely. Do you still see the blue ring? If so, then it's most likely the CCD sensor.
brachiopod said:
Is that on the shots with the other camera too?
Is it on all the shots?
If not, is there some unusual lighting for that shot?
I ask the last because as a photo guy, that looks like the type of thing that you see with internal reflections with the IR filter over the CCD under some lighting conditions, e.g. an incandescent light just out of the frame at the right angle for that shot. Again, is it on all the shots? Again, is it on the shots with the other camera too? If it is on all the shots you might have a problem, it does look like an artifact.
Click to expand...
Click to collapse
It's on all shots and only with the back facing camera. it moves when the camera is focusing.
Riddleric said:
It's on all shots and only with the back facing camera. it moves when the camera is focusing.
Click to expand...
Click to collapse
If it is on all the shots, you have a problem unfortunately. I just tested with mine, and you can get a very fierce IR internal reflection with a light source just out of the frame, but it isn't on all the shots of course. (see below)
Bit of a long shot, but if it moves with focusing, it might be some kind of internal light leak from the backlight. Maybe they forgot to install a little baffle or something. Turn the backlight brightness all the way down and see if that reduces it.

Low light

At the club, at the bar, or just in your mom's basement, nighttime is when you come out to play. Rate this thread to express how the OnePlus 5's camera performs when no or low light is present. A higher rating indicates that the camera sensor "sees" lots of light in dim conditions, and that the resulting photos have minimal noise. A higher rating also indicates that when the flash fires, the resulting photo is evenly-lit without any bright spots.
Then, drop a comment if you have anything to add!
Probably requires a little work on the SW, as I've noticed it takes great pictures at times, and then bad pictures in the same conditions at times. Misses one star for low light pictures.
I deduct 3 star for low light, EIS doesn't work in still image & there is no OIS in OP5 (OP5 downgraded from op3 in stabilization) so, in pro mode it's impossible to use 30s long shot without tripod or stands(who the hell like to use tripod in smartphone).
And the normal shots has lots of visible noises compared to advertised, portrait mode doesn't work in low light with flash, (missing on background lights bokeh), telephoto lens which is only 1.5x optical doesn't work in low light.
??????????????????
It's great to my untrained eyes. XD
bullooka said:
I deduct 3 star for low light, EIS doesn't work in still image & there is no OIS in OP5 (OP5 downgraded from op3 in stabilization) so, in pro mode it's impossible to use 30s long shot without tripod or stands(who the hell like to use tripod in smartphone).
And the normal shots has lots of visible noises compared to advertised, portrait mode doesn't work in low light with flash, (missing on background lights bokeh), telephoto lens which is only 1.5x optical doesn't work in low light.
??????????????????
Click to expand...
Click to collapse
What lol, who would use 30sec shutter time without tripod?
TheGripper said:
What lol, who would use 30sec shutter time without tripod?
Click to expand...
Click to collapse
Isn't that possible with Stabilization?
bullooka said:
Isn't that possible with Stabilization?
Click to expand...
Click to collapse
No the photo would come out terrible. Tripod is a must on any phone with a long shutter time.
TheGripper said:
No the photo would come out terrible. Tripod is a must on any phone with a long shutter time.
Click to expand...
Click to collapse
Now I ordered a tripod from Amazon, and a separate smartphone holder. I already got a Bluetooth remote that can be used as remote shutter.
If you are experienced photographer or using OP5. can you tell me what setup would be the best to take photos of half moon with lots of patterned light clouds, I tried to take photo of that and the Moon is all blured out to a round bright circle, I tried on different iso and shutter speed, with focus on that landscape sign ...
I'm very impressed with the low light quality of this camera.
http://i.imgur.com/b2OQGcZ.jpg
It even got the stars from the night sky.
I putted an auto picture for comparison.
Also Consider the loss of quality from the collage app.
If you are interested in the originals or the shutter speed/ISO settings, just tell me.
how is low light photos after 4.5.8 update ? is it still blurry ?
gonsa said:
I'm very impressed with the low light quality of this camera.
http://i.imgur.com/b2OQGcZ.jpg
It even got the stars from the night sky.
I putted an auto picture for comparison.
Also Consider the loss of quality from the collage app.
If you are interested in the originals or the shutter speed/ISO settings, just tell me.
Click to expand...
Click to collapse
Do you have other low light shots? Can I use them in a video review please?
ermacwins said:
Do you have other low light shots? Can I use them in a video review please?
Click to expand...
Click to collapse
Yes, I provide here the link for the photos.
These are a set of night pictures, all taken in the same place with a tripod and different settings. This was my first test with a lot of different manual settings.
In every picture taken there's the apperture, the shutter time and the ISO in the details.
You can see for yourself which settings took the best pictures.
Remember this was complete night time with just a few street lights.
The download is pretty big, 427MB but they are the originals with the respective RAW files.
https://mega.nz/#!eMVnBZqC!tWWE7MB-oyWyjjCpLmqtnobW0TC3PMsM81AoqIeBsw0
gonsa said:
I'm very impressed with the low light quality of this camera.
http://i.imgur.com/b2OQGcZ.jpg
It even got the stars from the night sky.
I putted an auto picture for comparison.
Also Consider the loss of quality from the collage app.
If you are interested in the originals or the shutter speed/ISO settings, just tell me.
Click to expand...
Click to collapse
How you do that? That's Amazing result
gonsa said:
Yes, I provide here the link for the photos.
These are a set of night pictures, all taken in the same place with a tripod and different settings. This was my first test with a lot of different manual settings.
In every picture taken there's the apperture, the shutter time and the ISO in the details.
You can see for yourself which settings took the best pictures.
Remember this was complete night time with just a few street lights.
The download is pretty big, 427MB but they are the originals with the respective RAW files.
https://mega.nz/#!eMVnBZqC!tWWE7MB-oyWyjjCpLmqtnobW0TC3PMsM81AoqIeBsw0
Click to expand...
Click to collapse
Thanks, do you have any low light videos?
How did you manage to take that shot from so dark to do bright? Settings please
Google hacked hdr+ camera makes this camera see in the dark.
zathus said:
Google hacked hdr+ camera makes this camera see in the dark.
Click to expand...
Click to collapse
can you shot some low light photos with that hacked app ?
jauhari said:
How you do that? That's Amazing result
Click to expand...
Click to collapse
nsdhillon10 said:
How did you manage to take that shot from so dark to do bright? Settings please
Click to expand...
Click to collapse
EXIF: F/1.7 4mm 10 seconds shutter speed, ISO 500, White Balance 2300K.
zathus said:
Google hacked hdr+ camera makes this camera see in the dark.
Click to expand...
Click to collapse
Did you use it? Did you notice some grid from small circles when you crop a picture?
First one was done with stock camera, second one with Gcam HDR+

FAKE dual camera setup on Xiaomi Mi A1? [Not Really]

Greetings my dear Mi A1 brethren! Today I am the bearer of bad news for you guys. From unreleased source codes to headphone hissing. This problem is the final nail in Xiaomi's coffin for me. I will never ever buy another Xiaomi device again.
I have reason to believe that the "dual" camera setup on the Xiaomi is FAKE! Let me show you. Follow these steps:
1) Open up the camera app.
2) Cover ONE of the two camera lenses at the back with your finger.
2) Zoom in to 2x mode (or greater).
Did you notice something? THE CAMERA LENSES DO NOT SWITCH! The main point of the Mi A1's dual camera setup is that one lens is wide angle and the other is telephoto (as mentioned on their website). When you zoom in, the app should automatically switch cameras.
Another test is that the dual camera setup should provide a background blur (bokeh effect) on objects that are up close to the camera. Cover a lens with one of your fingers and you'll see that either the camera gets blocked by the finger or the blur effect still remains (regardless of the fact that TWO cameras are needed for a proper bokeh effect)!
Both these tests prove that one of the Xiaomi Mi A1 cameras is a dummy. Has Xiaomi lied to us again? Why would Google let them do this?
Or is it that I don't understand how dual cameras work? Someone please enlighten me. I feel I've wasted 250$ of my hard earned cash on a scam
EDIT: Nevermind! I just found out it does work. But only in manual mode or portrait mode. Strange that the app does not switch to telephoto mode automatically. Perhaps in a future update.
Have you tried manual mode
MayanKKaushik said:
Have you tried manual mode
Click to expand...
Click to collapse
Yes, I did. I've edited the OP. I feel like a goof for not trying that first
No its real!
Try that in outdoor lighting conditions.
In natural lighting cover the zoom lens, and then hit the 2x zoom.
You will notice that the zoom lens is functional in good lighting conditions, not in bad light conditions.
Same with the portrait mode, thats why it is recommended to use 2x optical zoom and portrait mode in outdoor lighting conditions.
The camera decides if it should use digital zoom or telephoto lens depending on light conditions. Telephoto zoom only works with a lot of light(like portrait). If there is not enough light, digital zoom from wide angle lens is better. This even happens on iphone 7plus/8plus camera set up(if there is not enough light they just use digital zoom). However, I think that maybe it switches to wide angle digital zoom sometimes in good light conditions.
I can understand that you were concerned but please test things thoroughly before posting (or maybe Google it out). Actually the telephoto camera have a narrower aperture then the main camera. So it captures less light then the primary camera. When who cover the telephoto camera to see if it is working or not, then hit x2, it detects that there is low light (since you are covering the lens) & hence uses the primary camera. Okay, so this is how you should have tested. First go to a very will lit environment, then select 2x zoom, and then try covering the telephone camera. You will get the proper results. Hope this helps.
It's the same in Oneplus 5, for example!
Telephoto works properly only in good light situation
RayDnafsa said:
Yes, I did. I've edited the OP. I feel like a goof for not trying that first
Click to expand...
Click to collapse
should already have done that before starting a thread like this.
2017 dumbass award goes to you. smart alec.
erimin5 said:
should already have done that before starting a thread like this.
2017 dumbass award goes to you. smart alec.
Click to expand...
Click to collapse
If you want to know before clicking a photo which lens is used for 2x zoom just look at the animation when you use the zoom button. If theirs an animation of zooming then it's digital zoom & if it is directly switching to 2x or 1x then it is actually switching between the lenses. And it won't change with a future update too as the OP hopes. Works the same way even on iPhones. It OK to have questions but you went too far calling it a scam, fake & never buying from Xiaomi again.
jazzthe#1 said:
No its real!
Try that in outdoor lighting conditions.
In natural lighting cover the zoom lens, and then hit the 2x zoom.
You will notice that the zoom lens is functional in good lighting conditions, not in bad light conditions.
Same with the portrait mode, thats why it is recommended to use 2x optical zoom and portrait mode in outdoor lighting conditions.
Click to expand...
Click to collapse
But please help me, now my stock camera app there is no portrait and 2x mode , they're disappear after i've flash it to RR custom rom, but when i back to stock rom through miflash, the camera is still facing the same problems

How to take best picture in very strong light condition with HRD+/HDR+enhance

Hi all
when i take picture of my yard in bright sunlight, when i open the camera app and choose the HDR+on/HDR+enhance with autofocus, the yard in the camera screen is over-exposure, and when i take with HDR+on/HDR+enhance it doesnt change any thing when i saw in the camera screen, it quite strange, because i thought that function should process the over/under-exposure to keep the best detail, highlight and make the picture as real as it can ? what do i miss ?
and one more thing
when i tap the screen to focus to the sky, all around object and bright become darker and when i tap to the yard the bright around is brighter but the sky is lost detail of cloud and the building, it's normal ?
sorry cause i'm newbie with google pixel
Note: i post my isssue to topic https://forum.xda-developers.com/pixel-3-xl/how-to/share-pictures-pixel-3-xl-t3854033/page12, but i think it would be better if i make new seperatelly topic
test new night mode in daylight condition, works fine for me.
starbase64 said:
test new night mode in daylight condition, works fine for me.
Click to expand...
Click to collapse
Yes, nightsight would be better than in daylight but if so why do we need HDR function ?
hi all,
i have another picture with my yard
that when i tap focus on the sky to keep the detail of the building and the sky, the yard is more darker, i dont see any advantage when using HDR function on this camera ?

telephoto lens?

did anyone noticed that when shooting in "auto mode", if you press the 2X, the phone doesn't use the telephoto? it's just a 2x zoom from the wide camera.
You can test that covering the telephoto lens with one finger and pressing the 2X.... it shows your finger for a fraction of a second and then it shows the zoomed wide camera.
the only way to access the telephoto lens is from the PRO mode... and you can notice the difference when zooming at 8X.
Do you test it in low light condition? 2x optical tele only work in bright light condition, otherwise it will use main camera and crop.
GVN.Gallus said:
Do you test it in low light condition? 2x optical tele only work in bright light condition, otherwise it will use main camera and crop.
Click to expand...
Click to collapse
hahahahaha so that's the reason LOL
thanks.
moderators can close this thread

Categories

Resources