I have seen no videos critical to Gopros7blacks "hypersmooth".Both cameras on full auto, 1080/25fps on both, gopro = hypersmooth stabilizer,sony XAVC S HD 50Mbps.Lessons learned, turn of stabilizer when gopro is static/tripod or else moiré/alien/digital fx may appear.I like both cameras, just want to show the picture quality.No intention to fake or favour either camera.EIS is sometimes great, but comes with a price