Olivon 8x42 Barr & Stroud Sierra Binocular

BH #OL8X42BSS • MFR #OLBSSI842-US 70172
Olivon
Olivon 8x42 Barr & Stroud Sierra Binocular
Key Features
  • 42mm Objective Diameter
  • Phase-Corrected BAK4 Roof Prisms
  • Fully Multicoated Optics
  • 7.4° Angle of View
The 8x42 Barr & Stroud Sierra Binocular from Olivon features fully multicoated optics, BAK4 phase-corrected Roof Prisms, a wide angle of view, and a weather-proof construction with rubber armoring. While the fully multicoated lenses greatly increase light transmission and image brightness, the phase corrected Roof Prisms made of BAK4 optical glass preserve true colors. The wide 7.4° angular field of view allows you to see a linear field of 387' at a distance of 1000 yards, and the center focus with a diopter allow seeing crisp details as close as 6.6'. The binocular also has an interpupillary adjustment range of 56 - 74 mm and a 5.2 mm exit pupil.
Discontinued

Olivon 8x42 Barr & Stroud Sierra Binocular

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Olivon OLBSSI842-US 70172 Overview

  • 1Description
  • 2Optical Performance
  • 3Use and Handling
  • 4Construction

The 8x42 Barr & Stroud Sierra Binocular from Olivon features fully multicoated optics, BAK4 phase-corrected Roof Prisms, a wide angle of view, and a weather-proof construction with rubber armoring. While the fully multicoated lenses greatly increase light transmission and image brightness, the phase corrected Roof Prisms made of BAK4 optical glass preserve true colors. The wide 7.4° angular field of view allows you to see a linear field of 387' at a distance of 1000 yards, and the center focus with a diopter allow seeing crisp details as close as 6.6'. The binocular also has an interpupillary adjustment range of 56 - 74 mm and a 5.2 mm exit pupil.

In addition to optical performance features, the Barr & Stroud Sierra presents a number of convenience and construction highlights. The binocular housing is waterproof to 5' and has a smooth rubberized armoring to ensure a non-slip grip. For easy focusing, there is a large knurled center focus knob and a ribbed diopter ring on the right eyepiece. To accommodate anyone with glasses, there are 18 mm eye relief and twist-up eyecups.

Also included with the binocular are a strap, ocular lens cups, objective lens cups, and a carrying case with a strap.

Optical Performance

  • 42mm objective diameter
  • Fully multicoated elements improve image brightness
  • BAK4 phase-coated Roof Prisms preserve true color
  • Wide angle viewing: 7.4 °
  • Close focus: 6.6'

Use and Handling

  • Center focusing adjustment
  • Interpupillary range of 56 - 74 mm
  • Diopter adjustment ±4
  • Eye relief: 18 mm

Construction

  • Waterproof to 5' for three minutes
  • Smooth rubberized armoring provides sure grip
  • Twist-up eyecups allow viewing with glasses
  • Tripod adaptable via an optional mount

Olivon OLBSSI842-US 70172 Specs

Prism TypeRoof (BAK4)
Performance
Magnification8x
Objective Lens Diameter42 mm
Angle of View7.4° (Actual)
Field of View388.5' @ 1000 yd / 129.5 m @ 1000 m
Minimum Focus Distance42.7' / 13 m
Exit Pupil Diameter5.2 mm
Eye Relief17.8 mm
Interpupillary Adjustment56 to 74 mm / 2.2 to 2.9"
Diopter Adjustment-4 to +4
Focus TypeCenter
Features
Water ResistanceWaterproof
General
Dimensions5.3 x 4.9 x 2" / 135 x 125 x 52 mm
Weight23 oz / 652.05 g
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