Zeiss Terra ED 10x42 Binoculars - Black/Grey

The grey 2017 edition of Zeiss Optics' 10x42 Terra ED Binocular features 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 the 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 wide field of view. The 60° apparent angle of view also helps to minimize the visible hand-shake common in higher-power binoculars.

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 preventing 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

10x 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 reduces 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 sheds dust, dirt, and oils while improving light transmission, color rendition, sharpness, and contrast

Short 5.25 foot close focus distance

Wide 60° apparent angle of view

330 foot field of view at 1000 yards

Long 15mm eye relief

4.2mm exit pupil

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

Construction Details

Impact, corrosion and temperature-resistant fiberglass-reinforce 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: 24.5 oz

Specifications

Prism Type Roof

Magnification 10x

Objective Lens Diameter 42mm

Angle of View 6.0° (actual)

60.0° (apparent)

Field-of-View 330.0' @ 1000 yd / 109.6 m @ 1000 m

Minimum Focus Distance 5.25' / 1.60 m

Exit Pupil Diameter 4.2 mm

Eye Relief 15.0 mm

Interpupillary Adjustment 58.0 - 75.5 mm / 2.3 - 3.0"

Dioptric Correction ±3

Focus Type Center

Tripod Mount None

Dimensions 5.5 x 4.7" / 13.97 x 11.94 cm

Weight 24.5 oz / 695 g