When the autofocus system is active, multiple subject-distance readings are made each second and input to the camera’s main computer. As the shutter button is pressed to take a picture, several readings are captured and compared along with their assigned clock time to determine direction and speed of a moving subject. From this, the computer predicts where the subject will be at the instant of exposure. The focus motor is then directed to position the lens at this point as the aperture is closed, the mirror is lifted and the shutter is opened. The superior computing capacity and fine pitch of the AF CCD sensors used in Minolta’s multi-sensor AF systems enables detection of subjects accelerating toward or away from the camera as well as the velocity of a subject moving parallel to the film plane. Minolta calls this amazing technology, Omni Dimensional Predictive Autofocus.