Change camera field of view on keyframe? I need the camera to be able to zoom in (field of view) on a certain frame.

However, when I do that it effects all the frames and isn't good at all. 

Is there any way possible to make it so that on one frame the field of view is 32, then on the next frame it is 2.07?
You should be able to simply add key frames to Focal Length (I don't have Blender at hand to check, but I think I've done it recently in one of projects).

Selected one frame, enter value you want at that frame then press I when hovering mouse over Focal Length value input. Then next frame, enter new value and press I again.
This also lets you use F-Curves editor to specify whatever interpolation of value you want.

Also, I don't think you want to be changing sensor size (though that I would suspect should also support key frames).

edit:

Apparently you can't keyframe FOV (I thought it didn't matter whether you operate on FOV or FL), but you can focal length: