user1522431625565, get in touch with support, i never felt or heard that kind of noise on my Nokia 8.
I started having the same issue, since yesterday. Did you solve it? I own my Nokia 8 for 4 months now.
If the image is blurry/out of focus at the edges, contact support. I had this problem and they would have changed the Camera module (but got a new phone cause they did not receive spare part).
Visit Nokia service centre they will replace your camera.