Lenses utilizing SWD (Supersonic Wave Drive), a high speed motor developed by OLYMPUS which utilizes elliptical ultrasonic vibrations, provides the full range of “Start >> Accelerate >> Decelerate >> Stop” motions needed for Auto Focus in a single smooth motion. Notably, when the ZUIKO DIGITAL AD 12-60mm F2.8-4.0 SWD lens is used with the E-3, it provides the world's fastest (*) Auto Focus speeds.

* As of October 17, 2007. At full telescopic end of range, as measured by OLYMPUS.