[alirov]

The camera is hooked up to the raspberry pi via USB. I'm using the gphoto2 library in python to communicate with the camera, show a live preview on the attached LCD screen, snap photos and copy the photos onto the raspberry pi after they're taken.

Here's a list of cameras that gphoto2 supports: http://gphoto.org/proj/libgphoto2/support.php

I made sure to buy a DSLR that supported live-preview so that our guests could frame themselves before the photos were taken.