Vortex Diamondback HD 20-60x85 Straight Spotting Scopes

Vortex Diamondback HD 20-60x85 Straight Spotting Scopes are demonstrably superior to the previous non-HD model. The optics have been enhanced by the addition of the Vortex HD Optical System that improves light transmission and reduces chromatic aberration, yielding sharper images with truer color. Increasing the old 80mm objective size to 85mm also increases the amount of light that makes it to your eye. The ergonomics have also been upgraded: the focus knob is gone, replaced by a helical ring around the scope's body, reducing the likelihood of snagging when you move it in or out of a day pack. The Diamondback HD is constructed of an aluminum chassis that is O-ring sealed and argon purged to be waterproof and fogproof. It is covered by the Vortex VIP Warranty.