A versatile and fast zoom, the Zuiko Digital ED 14-35mm f/2.0 SWD from Olympus is designed for Four Thirds DSLR cameras, and provides a 28-70mm equivalent focal length range. The bright constant maximum aperture is well-suited to working in difficult lighting conditions, and also contributes to extensive control over depth of field. A sophisticated optical design incorporates extra-low dispersion and aspherical elements to control both chromatic and spherical aberrations in order to realize sharp and clear imagery with true color rendition. Benefitting handling, an Supersonic Wave Drive (SWD) autofocus motor delivers fast and near-silent performance while mechanically-interlocked manual focus affords enhanced control. Additionally, the lens also features a weather-sealed design to support working in inclement conditions.