I came across this interesting modification to a Yi 4k action camera that adds a C Mount lens to the camera. The Yi 4k camera shoots video in 4k and has a touch screen on the back. It is also using the same chipset as the GoPro 5 but at $200 it makes it a really cost effective camera. The modification package costs $99 and is designed to be lightweight so that the modified camera can still be flown by a quad. So for the total cost of $300 you get a 4k action camera with an interchangeable lens system....
Footage Sample
[youtube]http://www.youtube.com/watch?v=Y2p4duD2Mtw[/youtube]
How to:
Sidd