The optical system features a construction of 9 groups and 14 elements, including 3 ED lens elements. By adopting a floating focus method using a linear motor, silent and high-speed autofocusing is achieved while aberrations from long distances to short distances are corrected in a satisfactory manner, dramatically increasing the resolution. Furthermore, by arranging the ED lenses in a well-balanced manner, chromatic aberrations are also properly corrected, contributing to a high quality image. Also, both front and back bokeh give off a beautiful bokeh effect. This lens is equipped with an image stabilization mechanism correcting up to a maximum of 5.0-stop, greatly contributing to handheld shooting in low-light situations. Also, a fluorine coating has been applied to the front most lens, acting as an excellent water repellent and stain-proofer.