The black ZEISS Optics 8x42 Terra ED Binocular features a redesigned ergonomic chassis that makes holding it more comfortable, especially during long glassing sessions. Optically, it retains 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 multi-coatings. 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 binocular's usability is a short 5.25-foot close-focus distance that gives it 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 not only ensures that the housing will remain a constant temperature, even in cold and wet conditions, but will not experience the expansion and contraction common in metal chassis that can cause the optical elements to move out of alignment over time and hinder the binocular's ability to achieve sharp focus. The chassis is covered in a black rubber armoring that helps to protect it from drops and impacts and provides a slip-resistant grip.
Optical Performance
- 8x magnification
- 42mm objective lenses
- Roof prism optical path
- The compact Schmidt-Pechan prism design corrects the view while allowing for thinner optical tubes versus the more common Abbe-Koenig design
- SCHOTT ED glass elements reduce chromatic and spherical aberrations to produce views with true color rendition without halos, diffraction, or distortion across the entire field of view
- ZEISS proprietary hydrophobic multi-coated optics shed dust, dirt, and oils while improving light transmission, color rendition, sharpness, and contrast
- Short 5.25-foot close-focus distance
- 376.5' field of view at 1000 yards
Use and Handling
- Closed-bridge configuration
- Large fast-focus center wheel
- ±3 right-eye dioptric correction
- 58-75.5mm interpupillary adjustment range
- Twist-up click-stop rubber eyecups for comfortable use with or without eyewear
- Long 18.3mm eye relief
- Comfortable 5.25mm exit pupil
Construction Details
- Impact-, corrosion-, and temperature-resistant fiberglass-reinforced polycarbonate housing
- Housing is lightweight to minimize neck strain and lighten optic without sacrificing strength
- Protective black rubber armor
- Nitrogen filled for water and fogproof performance
- Submersible to 100 mbar of pressure, or approximately 3' (1m)
- Operating temperature 5 to 140°F (-15 to 60°C)
- Weight: 25.6 oz
