One awesome conceptual breakthrough I made is understanding that the Canon 7D's frame (22.3mm x 14.9mm) isn't even close to "full-frame" 35mm (36mm x 24mm), as the 5D and Nikon D3 approximate. But luckily for us movie people, the 7D's chip size is so close to a Super-35mm movie film frame (24.9mm x 13.9mm) that it's not even funny. Think about old film cameras. You run the film through sideways, producing an image like the full frame of this film cutout:
Holy crap! Cool, huh?
I realize that equipment doesn't define a cameraman, but I can't wait to screw around with my new stuff! For the record, I'm not a wild fan of DSLR filmmaking. It just gets weird. In my fantasies I'm shooting everything with Alexa and all of my footage looks like it came from IMAX. But those are fantasies, and the 7D is still the best deal for us hipster guerrillas.