Hi, my aunt just passed down a canon 400D to me as she is upgrading. This is not the 1st time I am handing a DSLR camera but when I select the auto focus mode to single shot, the camera always fails to focus. The images become out of focus and I am forced to shoot in AI Servo mode with burst shots. I was wondering if the problem lies with the lens or camera.
Ps I am shooting with a 17-85 mm USM lens.