Comprised of 12 lenses in 9 groups, the lens system realizes uniform descriptiveness with its excellent contrast from the center to the corners, equal brightness at entire zoom range and high resolution. Notably, 2 ED (Ultra Extra-Low Dispersion) lenses minimize chromatic aberration. An aspherical lens helps achieve high optical performance while allowing dramatic downsizing of the lens unit.The MEGA O.I.S. (Optical Image Stabilizer) effectively compensates for vibration making it easy to capture images clearly even if they are shot with small aperture.It incorporates a superior inner focus system which enables excellent resolution and contrast from full life-size magnification to infinity. The inclusion of stepping motor makes the focusing action smooth and silent for use in both photo and video recording. When mounted on the Digital Single Lens Mirrorless (DSLM) cameras of LUMIX G, users can take advantage of the high-speed, high-precision Contrast AF system.Seven blades give the aperture a rounded shape that produces an attractively smooth effect in out-of-focus areas when shooting at larger aperture settings. The new LUMIX G VARIO 35-100mm / F4.0-5.6 ASPH. / MEGA O.I.S. lens also features a highly reliable metal mount, and uses multi-coated lens elements that minimize ghosts and flare to further enhance its optical performance.