Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions<br />Micro Ultrasonic Motor (USM) is employed to deliver fast, precise, and quiet autofocus performance and works in conjunction with an electromagnetic diaphragm to complement photographing at fast continuous speeds<br />Seven-blade diaphragm contributes to a pleasing bokeh quality<br />Refract or bend light rays, so that they converge or come together ">