I upgraded my 450d to the 650 just before Christmas the photos so far are great but I am having a number if issues with video clips.

Unfortunately the helpful folks where I bought it are no longer open.

Firstly the movies were ruined by green sound bars across the pictures when played back on windows but on real player or QuickTime its clear.

However the focusing on moving subjects is poor and there is terrible sound noise from the lens constantly refocusing.

Is this a common problem or do I have a faulty camera