Sigma 50-100mm f/1.8 DC HSM Art Lens for Canon Mounts + Sony 32GB Memory Card + Memory Card Reader + 82mm Filter Kit + Backpack +Acessory Bundle Canon EF Mount/APS-C Format 80-160mm (35mm Equivalent) Aperture Range: f/1.8 to f/16 One SLD and Three FLD Elements One High-Refractive Index Element