Vortex Diamondback HD 8x28 Binoculars

Featuring a high-definition optical system, a lightweight magnesium alloy housing, and a generous field of view, the 8×28 Diamondback HD Binoculars from Vortex are a versatile optic suited to a wide range of uses.The Diamondback HD renders views with minimal chromatic aberration, exceptional color fidelity, edge-to-edge sharpness, and optimal light transmission through the use of high definition glass, an index-matched lens configuration, XR Plus lens coatings, and dielectric-coated, phase-correcting roof prisms. Minimum focus is a birding-friendly 6 feet. The lenses are protected from scratches, oil, and dust by ArmorTek exterior lens coating.The housing is argon filled and sealed with O-rings to ensure reliable and durable protection against dust, debris, fog, and water. They are rubber armored to make them non-slip and offers durable protection. They are equipped with a large focusing knob that is easy to use even while wearing gloves. Naturally contoured to perfectly fit your hands, promoting comfort, and eliminating user fatigue,the Diamondback HD includes a winning combination of features. Optical Performance Roof prism design 8x magnification 28mm objective lenses Fully multi-coated lenses increase transmission, clarity, and brightness Dielectric-coated, phase-correcting roof prisms improve true color, contrast, and transmission 332’ linear field of view at 1000 yards 6’ close focus distance Exit pupil: 3.5mm Eye Relief: 18mm Use and Handling Short-hinge bridge cuts weight and exposes more surface for handling Adjustable interpupillary distance: 55-72mm Oversized knurled center focusing wheel Textured diopter ring on right eyepiece Twist-up soft tapered rubber eyecups Construction Details Protective rubber armor provides a slip-resistant grip O-ring sealed and argon-filled to be waterproof and resistant to internal fogging when moving through extreme temperatures and environmental conditions Scratch-resistant ArmorTek exterior lens coatings repel oils and corrosive materials from lenses Key Specs Prism Type Roof Magnification 8x Objective Lens Diameter 28 mm Angle of View 6.2° (Actual) Field of View 332’ 1000 yd / 110.22 m 1000 m Exit Pupil Diameter 3.5 mm Performance Magnification 8x Objective Lens Diameter 28 mm Angle of View 6.2° (Actual) Field of View 332’ 1000 yd / 110.22 m 1000 m Minimum Focus Distance 6’ / 1.83 m Exit Pupil Diameter 3.5 mm Eye Relief 18 mm Interpupillary Adjustment 55 to 72 mm / 2.2 to 2.8” Diopter Adjustment Yes Focus Type Center Features Fogproof Yes, Argon Filled Environmental Protection Water-Resistant (Unrated) General Dimensions 4.6 × 4.5” / 11.68 × 11.43 cm Weight 14 oz / 397 g Packaging Info Package Weight 1.5 lb Box Dimensions (LxWxH) 6.5 × 5.9 × 5.8”