GREAT JOY EF Mount Adapter for 1.8x Anamorphic Lens
Brief look on Sigma 24-70mm F2.8 EX DG Macro lens – Astro-Geo-GIS
Amazon.com : Sigma 17-50mm f/2.8 EX DC OS HSM FLD Large Aperture Standard Zoom Lens for Nikon Digital DSLR Camera - International Version (No Warranty) : Electronics