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People, y'all are craAAzy. ENJOY your phones. Stop testing them for every little stupid thing like your life depends on it.
 
In low light, with those high frame rates, the phone has to crank up the ISO to get a decent recording (it obviously cannot increase exposure time). You don't see this with 1080p (30 fps or even 60 fps) because the frame rate is much much lower. It's even more obvious with still pictures, where your phone can use some pretty low shutter speeds (for a phone). It can go as low as 1/12, 1/4 or even 1s and therefore it won't have to use that high ISO a to produce an image.
 
In low light, with those high frame rates, the phone has to crank up the ISO to get a decent recording (it obviously cannot increase exposure time). You don't see this with 1080p (30 fps or even 60 fps) because the frame rate is much much lower. It's even more obvious with still pictures, where your phone can use some pretty low shutter speeds (for a phone). It can go as low as 1/12, 1/4 or even 1s and therefore it won't have to use that high ISO a to produce an image.

This right here. When it cranks sensitivity, you're gonna see the hot pixels.

I used to dread over this when I was in the camera craze. Taking shots with the lens cap on when the ISO cranked up max. If you have a DSLR, even high end full frame pro models, try it for yourself. You will not find perfect darkness. You'll probably see something that resembles a starry skies on a cloudless night.
 
The problem is so common that I've even seen it often on TV programmes, so clearly it affects even professional equipment.
 
The problem is so common that I've even seen it often on TV programmes, so clearly it affects even professional equipment.

hmm, never heard of it but im not a Pro when it comes to cameras.
Sadly my dead pixel is also visible in daylight, ive checket it out but only in the slomo mode. It is clearly visible when that pixel reaches a spot with a darker color, for example greens of trees. So it dont affect only the dark and that means it affects the whole slomo mode. I have three pixels blinking and one of them seems to be really stubborn.

So this is something different then a long time exposure at night on a DSLR or something like that.I would not be concerned if this would only happen at night but that isnt the case. The next owner of my phone will see it and probably throw me the phone in front of my feed again
 
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Wait , is the result evident in pictures or normal videos of normal lighting slow mo ?

And who shoots slow mo in darkness
Edit

No pixels
 
I got the hot pixels (two of them) in slo mo. When I switch to regular video mode they're gone: at least they appear to be gone.
 
For those that don't see it, I didn't see any because my brightness was down. Turn your brightness up, and you'll see quite a few I'd imagine.
 
I have an iPhone 6+ and I have about 6 white/grey pixels when recording 120fps in dark room :( ah man.. I can't swap it out because they are out of stock!
 
For those that don't see it, I didn't see any because my brightness was down. Turn your brightness up, and you'll see quite a few I'd imagine.

just rechecked it with brightness on full, still nothing. Maybe I'm doing it wrong but I see no weird pixels at all. It is very grainy all over due to the low light, but that's normal me thinks.
 
My iPhone 6 Plus and my wife's iPhone 6 both have a BUNCH of flashing pixels in slow-mo video mode. Both in very different places. I'm going to guess all devices have this, as the sensor is running much harder... It's really easy to see if you:

1.) Turn your brightness up to max
2.) Switch to slow-mo
3.) Cover the rear camera with your hand

Not so bothered, really, as you're unlikely to see them during day-time slow-mo (the only time you can use slow-mo on these devices!).

I tried this. I have no flashing pixels on my 6+. Is this a reliable way to see them?
 
just rechecked it with brightness on full, still nothing. Maybe I'm doing it wrong but I see no weird pixels at all. It is very grainy all over due to the low light, but that's normal me thinks.

Just put the brightness to lets say 70% and in a very dark room but not completely dark and watch for tiny grey or white dots, sometimes they blink. I have three of them and normally those are not bad because you dont slow-mo in a dark room but some of them are more "stubborn" then others. One of them can even be seen at daylight, of course not when you filming the sky because white spots on white/blue background is not visible but often your video footage also has darker parts and then you can see it, not very good but you can see it. But like i said this is not visible in the normal video mode with 60fps. This whole problem only gets annoying when some pixels dont go away in daylight.

the bending problem ist not a problem becasue every smartphone bends and the scuffgate was also not really a problem since anodized aluminium is not really durable

There are stuck pixels, dead pixels and hot pixels, the last ones are our probolem. stuck pixels just show one color, dead pixels show nothing which means you have a black dot and hot pixels occur when when the the sensor gets hot or when you are in high iso.
 
Hello everyone,

When I go to the camera and select Slo-Mo it introduces these little annoying flickering pixel artefacts that ruin the videos made with the mode.The easiest way I can show this is to take a screen grab of a black scene so you can see in the picture below.

I thought it might be a software thing as the normal photo, video and time lapse modes are all fine but after reset the problem is still there. It's not the screen either as the saved video files are effected.
 
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