AF single or AF continuous can be selected. In AF single mode, focus is calculated and set when the shutter-release button is pressed partway down. This mode is mainly useful for a stationary subject. In AF continuous mode, camera continues to focus on a moving subject even when the shutter-release button is pressed partway down. It is covenient to capture the moving subject. When setting spot focus point in AF continuous mode, subject tracking can be used. (Subject tracking can be turned on/off by the recording menu. ) When selecting the Spot Focus Point, Full Time AF can be used*. * Full Time AF can be turned on/off on the setup menu. * Sensors mounted on the grip and on the eyepiece detect when the camera is held.