How often do you fly?

How often do you fly over a dense region like Downtown Vancouver?

My interest is a bit out of the ordinary. We are looking at any way we can get inexpensive (relatively at least) photographs from _our_ digital cameras of a dense area. It would require about 8 to 10 images taken in a ring pattern (oblique). The reason for this is to what we call infinity focus calibrations. See our product at www.photomodeler.com. I look forward to your reply.
Best regards, Alan