Phone-O-Scope: Step 7
The slightly odd Phone-O-Scope, which is an adapter to affix SLR lenses to iPhones.
Build instructions and more details are here.
Duct tape madness. Attach the bottom connector to the camera phone case (inset, middle bottom) using thin strips of duct tape. Make sure you get a nice tight fit, but don't go overboard with the tape. Use a bit more tape to also firmly attach the lens cap to the top PVC connector (inset, middle top). Don't forget to attach a bit of cardboard at the back to prevent too much light leakage into the mechanism. Screw the top connector to the bottom, and the Phone-O-Scope is complete (right).