This 11.1x high zoom ratio lens incorporates Sigma's original OS function and offers a broad shooting range from wide angle to telephoto. The optical technology enables easy handheld photography with a compact construction and length of just 87.7 mm, making it ideal for various scenes such as landscape, general photography and sport. This compact construction guarantees excellent mobility. FLD ("F" low dispersion) glass elements, which have performance equal to fluorite, SLD (special low dispersion) glass elements, and aspherical lens elements provide high image quality throughout the entire zoom range. The HSM (hyper sonic motor) ensures fast and quiet auto-focusing.