Hi all. I'm new to this forum. In this thread i'd like to present to you my problem. From less than 1 year i'm using a Canon EOS 450D with standard 18-55 IS lens kit. During this time I've shot nearly 5000 photos without having problems. Few days ago after shooting a lot of pics (indoor, with the incorp flash), suddenly I could not shot any more. I generally use it in AF mode, Time priority (Tv). I discovered that the AF was not functioning when I half pressed the shooting button, as a result, it was not possible to take photos. When I switched in MF mode it was possible to Shoot. The quest is: Is this a Lens problem or a camera one and how can i resolve it? Thanx a lot in advance!