Sigma Sport 150-600mm f5-6.3 DG for Nikon FThe Sigma Sport 150 600mm f5 6. 3 DG is a large, heavy, quick focusing lens for Nikon F mount cameras. The maximum aperture isn't huge at f5 6. 3, but the lens is sharp throughout its zoom range, and the image stabilizer works very well. A modern supertelephoto zoom lens with great performance, if you don't mind carrying a bit of extra weight (it's about 3kg by itself). In excellent condition, with only very minor cosmetic wear, clean glass, and good