helmet cams
I've used a helmet mounted cam but prefer mounting it on the shoulder of my chest protector --I get a much more stable picture [my shoulders don't move around as much as my head does - I guess] What's most impressive though is the "IMAX" effect from that position. As the bike leans, the shoulders lean with it - whereas the head remains mostly vertical. On a big screen your viewers will find themselves leaning along with you !! The main disadvantage of that position is that some footage is wasted as you can't always tell what direction your shoulders are pointing [up or down] I use an extreme wide angle lens so almost anything in front or even beside you is included in the picture. This, again enhances that IMAX effect. A video I took riding up and down the Lion's Back [Moab] and then riding across a couple of arches is downright frightening.