Sigma 500mm f/4.5 EX DG IF HSM APO Telephoto Lens for Canon SLR Cameras Details:
Fast maximum aperture F4.5 telephoto lens optimized for digital SLR cameras.This ultra-telephoto lens has a fast maximum aperture, and also features a new super multi-layer coating, which optimizes the characteristics of digital SLR cameras. Two ELD glass elements in the front lens elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast.
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