Description
The completely redesigned design of the Vortex Viper HD line reflects all modern trends in the field of binocular ergonomics. The spiral focuser of increased diameter contributes to both fast, smooth and accurate focusing. The tripod mount is compatible with the Manfrotto RC2 quick-release system, which is today the standard for professional photo and video equipment. The changes also affected the optical characteristics. The increased diameter of the lens collects significantly more light, and, in combination with the proprietary Vortex XR Plus anti-reflective coating and the dielectric coating of Plasma Tech prisms, provides significantly better visibility during observations at dusk and dawn. Low-dispersion HD glass with high density eliminates virtually all optical distortions throughout the entire field of view. Those who are sure that a High-End telescope must cost all the money in the world will definitely admit their mistake when they first meet the Vortex Viper HD 20-60x85/45.
Premium HD glass lenses with high density (High Density) and extra-low dispersion provide exceptional color rendition and high image resolution. The refractive index of low dispersion glass depends little on the frequency of light (on the spectrum). All light waves are refracted by the same angle. The use of these glasses in the design of lenses allows you to practically get rid of such an unpleasant aberration as chromatism. The cost of such glass is very high, which is why only manufacturers of high-tech optics use it in their premium products.
Vortex XR Plus' patented premium multi-layer anti-reflective coating is applied to all optical surfaces that come into contact with air or inert gas, maximizing light transmission, image clarity, and brightness. Plasma Tech coating technology provides unmatched durability and coating performance.
ArmorTek Ultra-durable coating protects lenses from scratches, oils, and dirt. Plasma Tech coating technology provides unmatched durability and coating performance. 
Dielectric Prism Coatings Dielectric Prism Coatings provide the highest light reflectance value compared to metallic coatings. This significantly improves light transmission, resulting in a sharp and bright image with the most accurate color. Plasma Tech coating technology provides unmatched durability and coating performance.
