My department uses R/C helicopters to take aerial photo's of crime scenes. Pretty cool little copters. I have a few smaller ones. If you have never flown one I would recommend purchasing a coaxial (two main rotors) helicopter first, super easy to fly and allow you to learn easier. Don't jump in and buy a big expensive helicopter at first, because you'll end up with a big expensive pile of parts within 30 sec of your first flight.
On a side note you can buy the new COD black ops 2 care package edition and get a little 4 rotor copter to mess around with :greg:
Also I forgot, I know there is a "drone" already that has a camera built in that you control with an ipad. I don't know the name or model, but i'm sure a quick google search will yield a result.