The Panasonic Leica DG Elmarit 200mm f/2.8 POWER O.I.S. Lens is an ideal companion for the Lumix DC-G9 camera. You can also fix this lens on other Micro Four Thirds mount cameras as well. The optical construction of 15 elements in 13 groups includes two Ultra Extra-Low Dispersion elements to reduce chromatic aberrations. A nano surface coating is applied to the lens elements to suppress ghosting and flare. The triple linear motor AF system utilizes the 240 fps sensor drive to ensure an accurate and fast autofocus in both image and video capture. With the 9-blade diaphragm, the lens offers a smooth bokeh quality. The POWER Optical Image Stabilizer works with the Panasonic's Dual I.S. and I.S.2 in-camera functions to compensate for the camera shakes. This telephoto lens has a weather-resistant design that protects the internal construction from dust and moisture as well as makes it work in extreme temperatures.