Well known camera guy Joe Dunton has been coming up with Interchangeable lenses for the GoPro.

Joe Dunton Eyes GoPro | Film and Digital Times (http://www.fdtimes.com/2012/04/25/joe-dunton-eyes-gopro/)

That is great but, it looks like you lose the water proof housing. I just want a lense that is wide, with out the fish eye look and still fits in the housing

That is great but, it looks like you lose the water proof housing. I just want a lense that is wide, with out the fish eye look and still fits in the housing
Check this thread: http://www.dvinfo.net/forum/new-micro-pov-camera-systems/497177-lens-adapters-gopro.html

I'm using the Sunex lenses. Have not adapted the water proof housing for this yet but it wouldn't be hard to do, and I think Ian Newland has done it.

Are these working on the Hero2?