Mounting the lens
Turn the lens fixing ring and remove the mount cap. (Fig. 1)
Align the mark (red circle) on the lens mount with the mark (red circle) on the lens, and mount the lens. (Fig. 2)
Turn the lens fixing ring to securely fix the lens. (Fig. 3)
Set [MENU] → [CAMERA SETTINGS] → [LENS SETTING] → [LENS CONNECT TYPE] to [EF].