Hi, I'm using a zeiss loxia and noticed when i am focusing (via zoomed focus assist), there seems to be a very faint horizontal line running in the middle of the evf. It's super faint, but wondering if this is normal - can someone take a look at theirs and let me know? It's only on the evf, and not on the lcd screen. also when it's no on the focus assist mode, it's not there. Can someone replicate this 'issue? i.e. it might not be one at all.