Hello, My OM-D does not autofocus upon half-pressing of the shutter button. I changed the focus settings (AF/MF/S-AF+MF, etc) that were assigned to different buttons, as well as shooting modes (M/Auto/P, etc) but did not help. I even reset the settings and used the camera in factory settings, but this did not help either. What could I be doing wrong? Or is it that the camera is faulty? I bought the camera recently on amazon. I can return it, but would prefer not to if the community here can help me out with this issue. Thanks.