UPDATE: I've reshot this including the Xiaomi Yi all at 60fps • Xiaomi Yi vs SJ4000 vs Gopro Hero 3 on Qua... This was a first batch genuine SJ4000 so please don't comment that its a clone as the real ones have logos printed - see details here to tell the various versions/genuine SJ4000 http://www.foxoffer.com/blog/2014/08/... I'd read a lot online about the QUMOX SJCAM SJ4000 HD action camera (a 'gopro clone'), so wanted to do a direct comparison, side by side on the same type of flight etc to see for myself. This was an early model which just has HD 1080 on the front, this IS a GENUINE SJCAM model, when the copies came out later production runs had SJCAM branding on the camera. Please ignore the line on top left of both video's, its the 2nd aerial for my receiver which had come untaped, and I didn't notice until I watched video back ;) I've also made a quick spoken table top review video separately • SJ4000 vs Gopro 3 HD Action Camera spoken ... Also updated with new SJ4000 wifi version and top tips/best accessories to get the most from your SJ4000: • SJ4000 wifi HD action camera top tips and ... To compare video on quadcopters, I've mounted both camera's onto my DJI Phantom v1.1.1 (one after the other, they both fit perfectly onto std gopro mounting point), then flew as close to identical flights as I could manage on a sunny day to make a fair test between them, and the video is edited back to back for easy comparison. I used my preferred settings on Gopro 3 Black which is 720/60fps/5 second stills, SJ4000 also in 720p/60fps (it won't take stills at same time, but will do 5 second stills alone). My SJ4000 (which only came this week) is the latest version which supports video out (with special cable, as pin4 is used for video signal and not used on standard micro USB cables). This was filmed on DJI Phantom using a vibration isolated mounting plate, but I feel is applicable to any quad or multirotor, DJI Phantom, etc. Hope this is useful, I haven't made any comment/judgement on the video so people can judge for themselves. I will make clear that there is a substantial price difference between these camera's - the Gopro is ~600% the price of the SJ4000. Music from Dan-O at http://danosongs.com