Hey superlizard do you need a water proof set up or just for helmet mounted footage in skydiving we use mainly sony pc or hc camcorders with mini dv(they are nearly bulletproof) as hard drive camcorders tend to not go so well with G forces as for wide angle depends on how close you want to film if you just want wide angle shot from far maybe a .5 -.42 or for extreme close up with wide angle .3 but you have to be filming pretty close I set up a camera helmet for under $400 camera lens and helmet that I make professional skydive videos with! You can also change lenses to suit what you are filming but it just depends on what kind of filming you doin!