I recently started playing around with a SJ4000 clone gopro mostly because my airsoft budget is super limited and I wanted to give it a try before dropping additional funds into the project. I'm also planning on mounting it on a gimbal on the quad copter to do some other things along with a few other projects. So far, kind of meh on the video footage I've gotten from it. But I do believe it's more the lens than the sensor and I just ordered the right lens since I didn't read closely enough and it's got either a 120 or 140 degree lens on there so it's too tight for a head mount really doesn't get enough of the gun etc in the shot. But all things considered I've got very little invested to try it out, so we'll see what the end results are.
Right now since it came with a bunch of mounts etc, I made a mount using the adhesive mount they had and some .125 kydex. The .125 kydex fits very well between the mount pivots, IE I used 2 1in. wide straps of it, drilled and pinned with chicago screws for pivot points from the base to the camera, then in the middle pinned to 3 straps to fit the other end. It's stable and works well for being a quick DIY with stuff I had laying around. I'll likely do something a bit more "refined" if I find with the new lens I'm using it allot.
I'm not convinced I'm the best guy to have a camera strapped to my head though in my initial tests;) I do a fair amount of looking around, the fields I play have very uneven ground so I spend a fair amount of time glancing down at my feet to keep from tripping on things. Overall I'm not too impressed with my ability to film what's going on in a game with a camera on my head yet;) I might get better at it, but so far who knows but I'm willing to give it a go. I do think I'm likely going to find though that I either need several IE, head, gun, reverse. If I'm going to get enough good footage to make a video that is worth watching. And that plays to my hand of trying cheap cameras as well, since I can buy 3 of them for one fairly decent cam. I also might try some scope cam stuff, but from what I've seen there it's also a multi camera affair if it's decent and worth watching. So we'll see but it will be interesting to see where it goes, as well I'm super interested to see how other guys have them mounted etc.
Take care!
Luke