Covering everything from 24mm real wideangle through 135mm telephoto, this lightweight, compact lens represents a new departure in the high power zoom lens concept, with outstanding optical performance characteristics of the SP series. The optical system incorporates a new AD (Anomalous Dispersion) glass element, and four hybrid aspherical elements, resulting in ideal compensation of chromatic aberration and astigmatism. The M.O.D. (Minimum Object Distance) of the lens is 40cm over the entire zoom range. The 135mm telephoto achieves a maximum magnification ratio of 1:3.3, making macro photography possible. A zoom lock feature is included for enhanced portability. Filter diameter 72mm oMinimum focus distance 15.7"