Think ive worked it out: 1/30 is too slow and you get the microblur so keep it at 1/200 ish 6400 vs 12800 iso = higher is more noise, but brighter the other blur is due to rocksteady actually holding stabilisation better than gopro..gopro vids in dark allow whole image to move, wheras rocksteady keeps image compltely stable, but it blurs a bit instead. noise-2, only shows up in dark, but basically stops stabilisation/anti noise blur in dark. The anti noise algorithm doenst seem to cope as well as gopros one as it does introduce some more noticable blur.. ill probably use -2 from now on as it doesnt affect bright vid (possibly even better as less blur on movement)