Covering a versatile and popular range of focal lengths, the Lumix S PRO 70-200mm f/4 O.I.S. from Panasonic is an L-mount telephoto zoom featuring an f/4 constant maximum aperture. A sophisticated optical design is employed, which incorporates a series of aspherical, low dispersion, and high refractive index elements, to control a variety of aberrations, color fringing, and distortion for sharp, clear, well-corrected imagery throughout the zoom range. Complementing the optics is a unique double focus system, which utilizes both a linear motor and a stepping motor, to provide especially fast and precise focusing performance. Additionally, an Optical Image Stabiliser reduces the effects of camera shake for sharper handheld shooting and the lens sports a weather-sealed design for use in harsh conditions. This lens is in good overall condition with some signs of use. The glass is clean and in good condition. The lens barrel shows some cosmetic marks. There is some dust within the internal elements of the lens. The focus ring is in good condition. The lens mount shows signs of use. The tripod collar is in good overall condition with some cosmetic signs of use. The lens hood is in good overall condition with some cosmetic signs of use.Please note: The amount of dust and debris present within the optics has been found to not have an impact on the image rendered.