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Steve.
The LANC contoller on a Sony camera just plugs in and hangs anywhere you attach it, it's a simple on/off button.
When you have 5 mins tape left it flashes.
The Helmet Camera quality will determine how clear the video is first. It doesn't matter whether you wire that into a camcorder or fixed hard drive etc, a good quality helmet camera is first thing you need. It connects to the AV in jacks of the recording device, similar to the VCR at home.
Now the recording device will determine the file size, depending on what format it records. The smaller the resolution for example (352 x 288) vs (720 x 576) etc the smaller the picture and file size, however if you want to view that on a large screen or burn a DVD for TV it will pixelate, blurry like, crap quality.
So make sure the recording medium supports at least the helmet cameras resolution.
Next is what format will the recording medium use to save the file. Example MPEG1, MPEG2 etc. These formats will either compress that data into smaller files giving less clarity or leave them large. Digitape leaves them large at around 1gig for every 4 mins.
For example, my helmet camera can shoot full 580 verticle resolution, the camcorder records at 576 so pretty good, then the saved file is large MPEG2 format. I can then burn a DVD for TV use as well and it's clear as a whistle, dont blow that opportunity by reducing resolution and files size and ending up with low quality DVD's.
My 0.02 from experience.
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ok thats just confused me even more, i thought id decided what i was getting.
the lanc does sound cool but that would mean buying a new camcorder with the lanc socket and they are more than i was looking to spend at the moment.
http://www.actioncameras.co.uk/Archos_Helmet_Cameras.html
this camera here has the switch on the cable but its only 420 lines and specially for the 30gb media recorder, so im not sure how good that one will be either.
obviously the more i spend the better i'll get and im sure just for youtube videos the cheaper one will probably be fine.
im gonna keep looking i guess for a few days.
thanks for your input