A recent post on the 11 second club site spoke about the use of a virtual dolly to aid realism to your shot. In virtual space, we have near limitless freedom when positioning the camera. The virtual dolly could be used as an aid to force the animator to think about why a camera is should be located in a particular spot.
Of such usage, Keith Lango
wrote 'I've been at studios that have built and used such a rig. I've made a few myself. Nothing says fake like the floaty, weightless camera work of an unconstrained camera in CG. A rig like this forces you to shoot a scene like it's on a real film set. If I have a shot that requires any kind of flying camera or crane shot I often use a rig like this'
Jais Bredsted presents an interesting choice of camera positioning for his class 4 Animation mentor work, replicating what would be a webcam.
Class 4, week 5 from jais bredsted on Vimeo.
To understand the rules of a composition in animation, it is best to study how camera footage is used outside the animation areana. Vimeo video school has many online tutorials, which are certainly worth checking out. They range from explaining appropriate use of editting, to fancy camera tricks