Sigma 1000mm f/13.5 Mirror Manual Focus Lens For Nikon {86, 30.5 Drop-In}

The Sigma Mirror 1000 F/13.5 With an angle of view of just 2.5 degrees and an image magnification power of 20x that of a standard 50mm lens, you have the ability to bring that far distant subject right into your picture. Just as if it were right next to you. This is the world of the 1000mm Ultra Telephoto that you have always dreamed about. And even with such optical power, the Sigma 1000mm is ultra-compact, measuring just 92mm in diameter and 186.5mm in length; giving you the same mobility as a conventional 300mm telephoto lens. Angle of view: 2.5 degrees Optical construction: 6 elements in 6 groups Diaphragm operation: Fixed Filter size: 30.5mm rear 86mm front Minimum focusing: 5m Weight: 1050 grams (2.3 lbs)