3D Camera Zooms In When Not Previewing Video

Hello, this is a new problem I'm having on a lyric video project I'm working on. 

I have a 3D comp with a 4k image background and a 3D camera that is zoomed in and pans around the background, with text and images animating in.

When I was putting the comp together, the camera would stay in the correct spot I keyframed as I was adding and editing my layers. Now all of  a sudden, whenever I'm not playing back the video, the camera zooms in making it impossible to see what I'm editing. 

Here is a clip showing what I mean: https://youtu.be/NL0ljUbmlGE

Anyone know how to fix this? Thank you!