Olympus Zuiko 14-35mm f/2.0 Digital ED SWD Lens for Olympus Digital SLR Cameras 14-35 millimeter f2.0 zoom lens for digital cameras (equivalent to 28-70 millimeter in 35 millimeter photography) Features Supersonic Wave Drive (SWD) technology inside to provide quiet, ultra-fast autofocus speed Unique f2.0 aperture provides bright viewing with a sharp subject and a soft blurring of the background Includes reliable splash- and dust-proofing, and a mechanically-interlocked manual focusing mechanism Features a large, flower-shaped hood with a polarization filter control window