Lens Technology: RXD (Rapid eXtra-silent stepping Drive)

A stepping motor unit for high-speed and high-precision autofocus

RXD is a stepping motor unit that helps you stay focused on the action. RXD uses an actuator to precisely control the rotational angle of the motor, allowing it to directly drive the focusing lens without passing through a reduction gear. A sensor that precisely detects the position of the lens enables high-speed and accurate AF, which is ideal when shooting continually moving subjects or recording video. And a focusing system that is both smooth and quiet lets you shoot free from stress not worrying the drive sound in a quiet environment.