Opteka 500mm f/8 HD Mirror Telephoto Lens for Sony Alpha E-Mount a9, a7r, a7s, a7, a6500, a6300, a6000, a5100, a5000, a3000, NEX-7, NEX-6, NEX-5T, NEX-5N & NEX-5R Digital Mirrorless Cameras HD, super multicoated glass optics with anti-reflection coating for the sharper images Manual focus, compact, lightweight digitally-optimized telephoto lens Gives you the equivalent of looking through a pair of 10x power binoculars Soft pouch and three (3) rear mounted, 30.5mm filters, (ND-2X, ND-4X & Skylight) May be combined with the Opteka 2X Multiplier for 1000mm Zoom (Sold separately - 47st Photo Item Code: B000JSZ41S)