To get a decent R/C heli in the air... you will have an appx $700 investment. Then count on $200 to $400 in repair parts while learning to fly it. (better to count on that cost and be happy when nothing breaks, than to be unpleasantly suprized by the cost of your first crash...)
AND you'll need fuel, starter, glow ignitor, remote glow adapter (on most helis its a good idea...) Expect about $150 in field support equip, tools, fuel...
(we haven't even come close to putting a camera on the thing...yet.)

If you don't have assistance with the setup and initial trimming of the heli, you can double the repair costs estimate. You'll be likely to crunch the thing with no clue what happened 3 or 4 times just getting the thing trimmed out.
(get help... it WILL save you $$$$$)

It will take 2 months to 5 years for you to learn to control the heli sufficiently to get it up high enough to do any aerial photography.

Almost any .30 powered or larger heli could take a disposable camera up and use a servo to actuate the shutter. Occasionally you'll find a cheap 35 mm camera that has a self-winder. (I picked one up for $10 2 yrs ago. [img]i/expressions/face-icon-small-happy.gif[/img]) That would allow taking more than one frame per ascent. The camera and its servo need to be mounted in a manner to somewhat isolate them from the vibration of the heli, or all you'll get is a blur from any photo...