I rented a 100-400 f/4.5-5.6 L IS USM lens from lensrentals.com for a week since the Detroit Grand Prix's going to be taking place this weekend. I came home from work and it was here waiting for me. I've only taken pictures around my room, seeing how detailed it gets at 400mm and what not. Fucking nuts. I gotta get me one of these. It's the first L-glass anything I've played with and I'm nutting in my pants over it.