I am a confused newbie. I am looking for a drone and I like 2 of them, the sjrc f11s 4k pro which films 4k at 30fps and the SG908 Max which films 1080p at 25fps. Some of my research results tell me 25fps is a standard for 50hz in the UK, and 24 or 30fps is the standard for 60hz in the USA. So, why are there so many drones filming at 25fps being sold for use in the USA. Is this just a matter for playback on a TV or does it also affect phones, tablets etc. If this is about TV playback, what would be the difference in the playback in either 25 or 30fps in the USA. I've also seen that filming in 30fps and converting to 24fps would make my movies smoother. So confused...