Reach Farther: The M.Zuiko 100-400mm IS lets you get close from wherever you are. A perfect tele-macro choice, with a wide working distance. Weathersealed: The entire lens barrel is hermetically sealed to keep moisture, dust, and debris out. Stop worrying about the weather conditions around you and focus on getting your shot. Handheld Sharpness: Easily go to the locations with the best shots. The M.Zuiko 100-400mm IS' built-in image stabilization frees you to shoot handheld. Designed Better: An ultra-compact, ultra-light lens that delivers so much imaging power is a testament to M.Zuiko's long standing history of exceptional glass. There are 21 elements in 15 groups with 4 ED lenses to control color bleeding. Two super HR lenses and 2 HR lenses work in tandem to produce bright photos with edge-to-edge sharpness across the full zoom range. An advanced ZERO Coating reduces ghosts and flares for flawless images. Fast. Accurate. Impressive: Enjoy excellent, reliable AF performance