SIGMA Telephoto Zoom Lens APO 70-200mm F2.8 EX DG OS HSM for Nikon, Full-Frame Compatible I am selling this lens because I no longer use it. I was using it until recently, and it works without any problems. Please understand that this is a used item, and purchase accordingly. Feel free to comment if you would like additional photos. AF is super fast. No dust or haze. No other issues. Brand: Sigma Zoom Ratio (Optical): 2.9 x Fixed Focal Length: 20 mm Focal Length (Wide Angle Side): 70 mm Focal Length (Telephoto Side): 200 mm F-number (Wide Angle Side): 2.8 F-number (Telephoto Side): 22 Lens Type: Zoom Lens Type: Telephoto Lens Filter Diameter: 77mm Lens Construction: 17 groups, 22 elements Lens Mount: Nikon F Image Stabilization: Yes