I have found the following problems and solutions to my new Canon HF-R606 camcorder and hope it will help anyone thinking of buying this model.
1. Rattle noise from camcorder when turned off and shaken. (slightly !)
This is normal ( as stated in the online manual)
The rattle is from the lens system and it stops when the camcorder is turned on.
2. Ticking noise from autofocus system. This is very annoying as it can be heard in the video playback.
You have to go into the menu and switch to manual focus.
I would of thought that Canon could have done a better job of isolating the mics from the lens system.
Other than this, I am happy with my "new toy". It does slow motion and time lapse which is good fun, records in Mp4 which suits Sony Movie Studio 13
on my laptop and it cost just £159 ( after £20 cash back from Canon )
One of my Hi-8 camcorders cost me £1000 years ago !