Sent With a Tracking No. Samyang 16mm F2.0 Ultra Wide Angle Lens with AE chip for Nikon – Model SY16MAF-N. 16mm Ultra Wide F2.0 Lens. Angle of View (APS-C):&#######xA0;79.5&#######xB0;&#######xA0. Maximum Aperture: F2.0. Lens Construction: 13 Elements/11 Groups (2 Aspherical lenses). Minimum Focus: 7.9 inches. Maximum Diameter: 3.26 inches&#######xA0. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt.