Powerful magnification, a wide field of view, and a bright objective leans combine in the 12-36x50 Crossfire HD Spotting Scope from Vortex. This entry-level straight-viewing spotter will serve you in the field or at the range with fully multicoated HD glass that delivers a sharp, true-color image with minimal chromatic aberration. All air-to-glass surfaces are fully antireflective and multicoated to minimize light loss. The lightweight body is nitrogen-filled to be waterproof and resist internal fogging. The scope comes with an Arca-style tripod-mounting shoe, so it's ready for your tripod right out of the box. Optimized with select glass elements to deliver high contrast, cut chromatic aberration, and provide color fidelity and edge-to-edge sharpness Antireflective coatings on all air-to-glass surfaces provide maximum light transmission for peak clarity and good low-light performance Rubber armor allows a secure, nonslip grip and durable external protection Nitrogen-purged for fog and waterproof performance Specifications Viewing Angle: Straight Prism Type: Roof Magnification: 12 to 36x Objective Lens Diameter: 50 mm Angle of View: 12x: 3.3 (Actual) 36x: 1.7 (Actual) Field of View: 12x: 173.0' @ 1000 yd / 57.4 m @ 1000 m 36x: 89.0' @ 1000 yd / 29.5 m @ 1000 m Minimum Focus Distance: 14.5' / 4.4 m Exit Pupil Diameter: 12x: 4.2 mm 36x: 1.4 mm Eye Relief: 18.0 mm Fogproof: Yes, Nitrogen Filled Environmental Resistance: Water-Resistant (Unrated) Battery / Runtime: No Filter Thread: No Tripod Mounting Thread: No Dimensions: L: 9.7" / 24.6 cm Weight: 31.2 oz / 885.0 g