Hey friends Have 2 questions relsted to the camera.

So when I'm using my camera it seams that as I zoom it changes the quality of the image as the lense changes. This is noticed by what seams to be what use to be a clear image than becomes what seams to be more Grey or grainy overall almost like the ISO is raising itself exponentially. But this happens even in the daylight, though it's much more noticeable with a darker setting. I can't figure out why this is or how to fix it.

The second question I have relates to the pro camera mode. When I switch to the pro camera mode and adjust my settings, focus included and I tell it where to focus, even with my phone sitting still on a stand, the pictures come out very very grainy, out of focus, and almost like warped, like you can see the greens and purple warp sround edges of things. I cant seam to figure out why or how to fix it. This same thibg hsppens when ising the 50mpx setting too.

Can anyone help?. .