Please help. I purchased a Canon 600D about 6 months ago and I starting to experiment with different shooting modes.

I want to use AV mode but the camera will not autofocus in AV mode. Am i doing something wrong! I have used a 60D in AV mode and the Autofocus works fine.

Is there something wrong with my camera. Any help would be most appreciated.

PS. I performed a software update.......has this caused any problems.

Kinds regards