Charlie I don’t know the answer to your question but before you drop a lot of cash on a GoPro HD keep in mind that even though the Go Pro HD has excellent footage clarity when viewed individually, when the footage is loaded up through You tube or Vimeo the quality is reduced to something similar to footage filmed by your 5mp Go Pro. And since the Go Pro you currently use has a fish Eye lens and the Go Pro HD is only available with a Fish Eye lens, It would be just like your purchasing the same camera that you already have. Just my .02 cents but I think you would be better off if you were to get a Go Pro 5mp with a regular lens so you can add a varity of camera angles to your movies as well as save yourself a few bucks.