The Nikon EDG VR Fieldscope 85mm Spotting Scopes w/ 20-60x Eyepiece are made for superior-quality digiscoping, combining sophisticated optical technologies with extreme VR precision that mechanically reduces vibration. The result: the Nikon EDG VR Scopes keep your viewing world still, so you can enjoy the most minute details and photograph them in astonishing clarity. The Nikon EDG Field Scope 85 VR features a superior optical compensation system to correct for chromatic aberration. Components include ED glass with advanced apochromat, a field-flattener lens systm, advanced multilayer lens and prism coatings, and Nikon's original VR (Vibration Reduction) system. As you'd expect from the top-of-the-line spotting scopes in the Nikon EDG FieldScope family, the Nikon EDG VR 85 is completely waterproof and fog-proof. The Nikon EDG VR 85 Spotting Scope w/ 20-60x Eyepiece is truly an optical masterpiece, made for optics connoisseurs and photographers looking for maximum focal length.