Skate Video lens ?

Hey guys, a lot of skate videos are done on fish eyes can some one suggest a good one for my BMCC ef 2.5k?
** and a lens for night clubs cheers

Sigma 4.5mm f/2.8 ? It's relatively fast and partially fills the BMCC's frame.

Sent from my Nexus 7 using Tapatalk 4

Try the Opteka 6.5mm f/3.5 Manual Focus Aspherical Circular Fisheye Lens.

It's cheap in case it falls, and has ef mount.
But I hope you use a cage for your camera.