If you’re serious about your iPhoneography (and you should be, with such a great camera always in your pocket), then you might want to take a look at the ridiculously over-achieving iPhone Rangefinder case, from our fine friends at Photojojo. The two-piece polycarbonate case slips over the phone and adds a shutter button, a viewfinder and even interchangeable lenses. It’s pretty neat.
Retrotastic Rangefinder Case Adds Shutter, Viewfinder To iPhone