Sigma 70-300mm f/4-5.6 DG Macro Tele Zoom Lens Kit, for Canon EOS Cameras with Tiffen 58mm UV Filter, Lens Cap Leash, Professional Lens New lens coating minimizes flare and ghost, a common problem with Digital SLR cameras. Engaging the Macro Switch makes the lens capable of macro photography with a 1:2 maximum magnification. Special Low Dispersion (SLD) glass is used for compensation of chromatic aberration throughout the entire zoom range.