To the user who had 2 lines on their camera...

[thatuxguy]

I remember seeing a user complaining about having 2 white lines on their camera screen when taking pics. I can't remember who posted it or what post it was in. But I think this is your issue. You have grids turned on? Scroll down the page below to "square" and u will see what I mean.

How to take better photos using framing grids in Nokia Camera | Windows Phone Central