If you were ever lucky enough to shoot video with a Super8 camera, this is a way for your to regain that feeling with your iPhone. The Cinebody iPhone Super8 Case ($199) uses your iPhone as the screen, has its own microphone, a trigger for starting/stopping recording, a focusing eyepiece, a cold shoe for accessories, and a 58mm lenses that are interchangeable.
After installing the iPhone Cinebody App you can control the exposure, frame rate, and focus. Currently available for the iPhone 6/6s.
Pretty awesome. Orders expected to start shipping October 7th.