Adorama offers the Sigma 17-50mm F2.8 EX DC OS HSM Lens for Canon Cameras (pictured), model no. 583101, Nikon Cameras, model no. 583306, Sony Cameras, model no. 58C205, Sigma Cameras, model no.583110, or Pentax Cameras, model no.58C109, bundled with a Tiffen 77mm UV Wide Angle Filter, Professional Lens Cleaning Kit, and Slip-on Lens Cap for $569 with free shipping. That's $38 below our May mention of the lens alone and the lowest total price we could find for these purchased seperately elsewhere by $25. Features include FLD glass elements, anti-shake, 11" focus, 1.5x magnification, and more.