The Lumix S Pro 70-200mm F2. 8 O. I. S. (S-E70200) is a large-aperture telephoto zoom lens that boasts high descriptive performance across the entire zoom range. It is designed and developed for professional field photography. Astigmatism is corrected with an aspherical lens, achieving high resolving performance from 70mm to 200mm.Maneuverability - More Creative OptionsTo empower your outdoor shoots, the lens features dust/splash/freeze-resistant construction, three focus buttons for intuitive control, and a focus clutch mechanism for instant Af/Mf shifting.o.i.s. (Optical Image Stabilizer) for Ultra-Sharp PhotosCapture those what you see! Optical image stabilization (O.i.s.) technology built into the lens ensures your photos will look great, with sharp, blur-free contours across the entire image.Video Support for Perfect RecordingIn addition to silent design, the lens offers both stunning autofocus and smooth aperture changes.