Sigma 500mm F4.5 EX DG HSM

This Sigma APO 500mm F4.5 EX DG is a large aperture telephoto lens designed for full-frame and APS-C digital SLRs. Two ELD (Extraordinary Low Dispersion) glass elements provide optimum color correction and sharpness throughout the entire zoom range and a new multi-layer lens coating technology and lens design formula reduce flare and ghosting. Rear insertion 46mm filters with provision for easy rotation of polarizing filters, and this lens is also compatible with the Sigma APO Tele Converters to provide additional reach, creating an effective 700mm F8 or 1000mm F11 lens.