I am selling my Sigma 17-70 2.8-4.0 for Nikon. I had this lens for about two years. It really takes beautiful pictures. It is has a 2.8 aperture at its 17mm wide angle and a 4.0 aperture at 70. It used to be on my camera bag most of the time. I upgraded the kit lens with this. I am selling this as I am moving to micro four thirds. I am including both rear and front caps along with the 72 mm UV filter that I put since day 1. No scratches or dust that can affect image. Also, lens hood is included.