You can also zoom out (25%) and hope you can see where the production frame has been panned off too. Unless I'm using one of the six isometric views, I never use the pan or zoom tool (NEVER). I insert a new camera I call a "build" camera and I move (actually change position) that camera around to see stuff instead of zooming and panning in one camera view. Renders can also get all squirly especially with backdrops and stuff. -Kix

-Kix