I still can't fully understand how virtual cameras can get stuck on virtual scenery.
I know it's realistic, and if it was a film set then the camera man would indeed bump into the tree if the director told him to pan the camera like that... but in a virtual world where tangibility is a variable decided by the programmers, can't they just make the camera 'noclip' through the scenery instead of getting stuck?
Although a 'noclipping' camera does have it's problems too, like when you zoom in on your character and suddenly go through the back of their skull and see their face from the inside... that's some freaky shit right there.
Incidentally, and I'm not sure how relevant this is, but in some games when your character is walking through the level apparently they're not actually moving at all, they're just walking on the spot and it's the world and scenery that's moving around them, much like how they created the illusion of flight in old films, in which they had a static model of an aeroplane and a moving background with clouds and mountains.