Zeiss Sports Optics Victory HT Binocular 8x54 Combining their proprietary High Transmission (HT) optical system with large objectives in their 8x54 Victory HT Binocular, ZEISS delivers an optic with outstanding performance, especially in low-light conditions. The HT system enables better than 95% light transmission from the objectives to the user's eyes by employing extra-low dispersion SCHOTT fluoride (FL) glass elements multi-coated with ZEISS' T* coatings to maximize light transmission through the entire optical path. An Abbe-Koenig prism design complements the FL glass and T* coatings, resulting in an image that is exceptionally bright and rich with contrast, clarity, and detail from dawn to dusk. The relatively low magnification and large objectives produce an exceptionally wide 6.7mm exit pupil that ensures full coverage when the pupils are fully dilated in low light. Features: Extra-Low Dispersion Fluoride Glass Abbe-Koenig Roof Prism Design T* and LotuTec Fully Multi-Coated Optics Wide 60° Apparent Angle of View Specifications: - Prism Type: Roof - Magnification: 8x - Objective Lens Diameter: 54 mm - Angle of View: 7.5° (Actual) - 60° (Apparent) - Field of View: 390' @ 1000 yd / 129.48 m @ 1000 m - Minimum Focus Distance: 11.5' / 3.5 m - Exit Pupil Diameter: 6.7 mm - Eye Relief: 16 mm - Interpupillary Adjustment: 58 to 76 mm / 2.3 to 3" - Diopter Adjustment: -3 to +3 - Focus Type: Center - Fogproof: Yes, Nitrogen Filled - Water Resistance: Waterproof