The Leica DG Vario-Elmarit 50-200mm f/2.8-4 ASPH. POWER O.I.S. Lens from Panasonic is a 100-400mm equivalent zoom designed in collaboration with Leica for Micro Four Thirds cameras. The optical design incorporates several low-dispersion elements, two aspherical elements, and an ultra-high refractive index element to control both chromatic and spherical aberrations for improved clarity and sharpness. A Nano Surface Coating has also been applied to limit flare and ghosting for increased contrast and color fidelity when working in strong lighting conditions. Benefitting both stills shooting and video recording, a 240 fps high-speed AF motor offers quick, quiet, and precise autofocus performance. Also, a POWER Optical Image Stabilizer will compensate for the camera shake and works with Panasonic's Dual I.S. and Dual I.S. 2.0 in-camera stabilization functions to minimize the appearance of the camera shake. With a 100-400mm equivalent focal length range on Micro Four Thirds cameras, this telephoto prime is well suited to working with the distant subject matter. Two ultra extra-low dispersion elements and two extra-low dispersion elements minimize various aberrations in order to produce a high degree of clarity, sharpness, and color accuracy. Nano Surface Coating has been applied to individual elements to reduce flare and ghosting for improved contrast and color neutrality. POWER Optical Image Stabilizer minimizes the appearance of camera shake for sharper handheld shooting, and also supports the Dual I.S. and Dual I.S. 2.0 functions for increased stabilization performance.