I have a weird problem with my 6 shooting low light video. It only happens sometimes and I can never reproduce it trying to record again on the exact same spot. It has happened since I got it with my on 5s backup, starting as new and restoring from iCloud with my new 6 backup. What happens is the camera looses like 50% of the brightness after a while. And it not slowly or a fade. It goes from good to bad in an instant. Anyone else notice this? I'm thinking it could be hardware.