Report "I have a tamron XR Di 2 SP 17-50 mm lens on a Canon 7d body. In the picture mode I get the error 01, faulty communication between lens and camera. In the movie mode everthing works normal. Any other lens (Sigma, Canon) works fine in picture mode. I cleant the contactpoints of lens and camera, I did several hard resets on the camera but the problem persists. Any sggestions? sincerely, Maarten"