Scanlines in very low light photos using long shutter times

[Dreamspell]

I get very obvious scanlines when I use a 4 second shutter speed when I want to take pics of the night sky, or very dark rooms without using flash. My past Lumia 720 did a much better job and could actually take photos of the night sky with the stars and clouds, even at midnight.

Here are some examples.

2 second shutter speed


4 second shutter speed


Does this happen to anyone else? Pictures taken with a shutter speed of less than 2 seconds come out fine, and daylight photos are flawless.

 

[anon(8657436)]

I never get these kind of things on my 520 or on my friend's 625.

 

[bayanii]

Have you tried lowering the white balance. It looks like light noise. Lower your white balance. I just tested my Icon with 4s shutter at higher white balance, it resulted with similar lines.

 

[bayanii]

If focus light is on, that may cause some problems.

 

[Harmdizzle]

I get this too, actually. also happens in low-light videos.