“What is the difference between camera Point of interest and camera position?”
camera position is where the camera is in space – POI is where the camera is looking
“Why wouldn’t you just use rotation to determine your point of interest?”
you can, just set the auto-orient to off. But sometimes it’s easier to just animate the POI – say the camera always had to look at a specific object, just set the POI on that object then you can move the camera around and it will always look in the same direction. OR maybe you want the camera static and then have it pan accrosss to another object. Instead of having to animate the rotations, just move the POI.
” How can you move camera position and camera point of interest together in the timeline window?”
ummm, I’m not sure, but you can in the composition window I think by holding down ctrl or alt while you drag.