Hi! This is my first post.
I just bought a Sony a6300 and i have a problem while recording 4k video. I'm using a Sony 55-210mm lenses.
When i select 4K Video and the options: 24p 100M (super 35mm) and 24p 60M (super 35mm) some black bars (stripes) appears on the video. (i'll attach stills).
This is "resolved" by making higher the ISO around 6400-20,000, but then at 25,600 the black bars appears again (and stronger).
I don't know if there is something with my configuration (i haven't changed a lot of things since i bought it, almost everything is on default), or if it is another kind of problem.
I used also the 16-50 kit lenses and the stripes appear too.
Thanks for your help!
*The one with the BEAR is 24p 60M, the one with the purple curtains is 24p 100M.