yep thats clean. in some of the vidoes this halo effect starts to appear a minute or so in to the clip so its not at the beginning. For example i shot a local MTB trail. Out in the open air,no shade at all. Video starts of fine and after about 90 seconds the halo starts to appear and within 20 seconds of that its really noticeable.First thought is makesure your lens protector is CLEAN.