The gray ZEISS Optics 8x42 Terra ED Binoculars feature a redesigned ergonomic chassis that makes holding them more comfortable, especially during long glassing sessions. Optically, they retain the exceptional elements that are the hallmarks of the Terra ED, including compact Schmidt-Pechan roof prisms, SCHOTT extra-low dispersion (ED) glass, and proprietary multicoatings. These complementary technologies and elements work together to produce an immersive observational experience that presents clear and bright views with accurate color representation and virtually zero distortion across the entire field of view. Adding to the binoculars' usability is a short 5.25' close-focus distance that gives them the ability to resolve feathers or leaves in fine detail.The comfortable ergonomic chassis is made of a fiberglass-reinforced polycarbonate to help reduce weight without sacrificing strength, while adding impact and temperature resistance. Being resistant to temperature changes ensures the housing will remain a constant temperature in cold and wet conditions. It also prevents the expansion and contraction common in metal chassis that can cause the optical elements to move out of alignment over time and hinder the binoculars' ability to achieve sharp focus. The chassis is covered in gray rubber armoring for a slip-resistant grip. It also helps protect against drops and impacts.Optical Performance8x magnification42mm objective lensesRoof prism optical pathCompact Schmidt-Pechan prism design for correct view and thinner optical tubes versus more common Abbe-Koenig designSCHOTT ED glass elements for less chromatic and spherical aberrations and views with true color rendition, without halos, diffraction, or distortion across the entire field of viewZEISS proprietary hydrophobic multicoated optics for better light transmission, color rendition, sharpness, contrast plus resistance to dust, dirt, and oilsShort 5.25' close-focus distance376.5' field of view at 1000 yardsUse and HandlingClosed-bridge configurationLarge fast-focus center wheel±3 right-eye dioptric correction58 to 75.5mm interpupillary adjustment rangeTwist-up click-stop rubber eyecups for comfortable use with or without eyewearLong 18.3mm eye reliefComfortable 5.25mm exit pupilConstruction DetailsFiberglass-reinforced polycarbonate housing for impact, corrosion, and temperature resistantance Lightweight housing for minimized neck strain and lighter optic without sacrificing strengthProtective gray rubber armorNitrogen-filled for fog and waterproof performanceSubmersible to 100 mbar of pressure, or approximately 3'Operating temperature 5 to 140°F (-15 to 60°C)Weight: 25.6 oz
