I’ve been looking at how to make cool camera effects in After Effects but I had a bit of trouble using the camera object to do anything meaning full (or simple) with out making a mess or just failing me. With perseverance in my pocket and a lot of “FFS BLOODY WORK!” I managed to find a simple and effective way to pan and zoom the camera in After Effects. You use a Null object as a mediator. Null objects speak both English and Camera so can translate what you do for the camera to understand. 
