Panasonic 14-140mm f/4.0-5.8 OIS Video Optimized Micro Four Thirds Lens for Panasonic Digital SLR Cameras Circular aperture diaphragm, durable metal mounting and multi-coated lens elements Based on the Micro Four Thirds System standard The new lens system uses four aspherical lenses and two ED lenses to achieve dramatic downsizing despite its powerful 10x optical zoom. The filter size is 62mm. Panasonic's Mega O.I.S. (Optical Image Stabilizer) suppresses the blurring that is commonly caused by hand-shake The new lens allows use of the advanced contrast AF system