Very cool gadget - how did I ever miss this? Is it adjustable at all - IOW, will it fit over a bumper, or only useable on a naked iPhone?
Phone has to be naked to use it. It takes some cool shots... I really liked using the fish-eye. The fish-eye is more dramatic outdoors than in close quarters.
I had a wide angle/macro lens for my iPhone 3GS that I loved. I'm really tempted to take this off your hands. But I always have a case or at least a bumper on.