Steiner 10x42 Peregrine Binoculars

BH #ST10X42PB • MFR #2051
Steiner 10x42 Peregrine Binoculars
Key Features
  • Phase-Corrected BAK4 Roof Prisms
  • Anti-Reflection Fully Multi-Coated Glass
  • Ultra-Wide 67° Apparent Angle of View
  • Fast Close Focus/Distance-Control System
Designed with the discerning birder in mind, the Steiner Optics 10x42 Peregrine Binoculars are outfitted with an array of features to make them your go-to optic for all your wildlife observation needs.
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Steiner 2051 Overview

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

Designed with the discerning birder in mind, the Steiner Optics 10x42 Peregrine Binoculars are outfitted with an array of features to make them your go-to optic for all your wildlife observation needs.

The BAK4 roof prisms are phase corrected to ensure accurate color representation and improved contrast, while fully multi-coated lenses maximize light transmission to provide crisp high-contrast views. The binoculars' high 10x magnification produces an ultrawide apparent angle of view to make scanning the landscape easier with minimal head movement while ensuring steady images without the distracting hand shake that is often seen when holding high-power optics such as this. These optical features are complemented by Steiner's Fast Close Focus and Distance-Control systems that make focusing at all distances fast and easy, so you can quickly react when opportunities present themselves. Fold-down rubber winged eyecups help you focus on the view by blocking your peripheral vision and also prevent stray light from interfering with your views, so images appear crisper and clearer with greater contrast.

The chassis is made from Makrolon polycarbonate that is impact and corrosion resistant. Makrolon is also temperature resistant, so the optical tubes won't expand and contract with temperature fluctuation, which, over time, can cause the optics to move out of collimation, preventing the binoculars from being able to achieve sharp focus. The chassis is wrapped with a long-lasting NBR rubber armoring, which not only protects the binoculars from drops and impacts, it also gives the binoculars a slip-resistant grip—especially in cold and wet weather. The binoculars' optical tubes are nitrogen filled and O-ring sealed to make them water and fogproof, even in extreme conditions.

Optical Performance

  • High 10x power magnifies distant subjects for close-up observation and identification
  • 42mm objective lenses boost light-gathering capability to improve vision in challenging conditions such as at dawn and dusk or on heavy overcast days and while viewing small subjects at long range
  • Compact roof prism light path ensures performance without adding excessive weight and bulk
  • BAK4 prisms deliver a round exit pupil and a crisp and clear image with limited edge distortion
  • Phase-correcting prism coatings eliminate internal interference to improve color and contrast
  • Relatively short 6.6-foot minimum focusing distance allows for extremely detailed observations of small birds, bugs, insects, flora, and fauna at close range
  • Ultrawide 67° apparent angle of view allows the user to see large areas without having to move her or his head to make it easy to scan the landscape for subjects without startling them, while minimizing the appearance of distracting hand shake that is often associated with holding high-power optics
  • Spacious 355-foot field of view at 1000 yards

Use and Handling

  • Closed bridge configuration provides a solid platform for the internal focusing mechanism
  • Large slip-resistant center focus knob is easy to manipulate in cold and wet weather or while wearing gloves
  • Fast Close Focus system enables fast tack-sharp and precision focusing from 6.6' to infinity with minimal rotations
  • Distance-Control System enables presetting to a known observation distance and sharp focusing with one simple turn of the focusing wheel
  • Fold-down rubber eyecups for comfortable use with or without eyewear
  • 4.2mm exit pupil will cover most pupils as they open and dilate in low light to ensure the complete scene remains in view without vignetting

Construction Details

  • Impact- and corrosion-resistant Makrolon polycarbonate chassis
  • Chassis' temperature resistance ensures it stays a comfortable handling temperature in cold or wet conditions, while resisting the expansion and contraction common with metal chassis that can cause the optical components to move out of alignment over time
  • Oil-, petroleum-, and chemical-resistant NBR synthetic rubber armor offers improved grip security, especially in cold and wet weather
  • O-ring sealed and nitrogen filled to be waterproof to 9.9' (3m) and resistant to internal fogging when moving through extreme changes in temperature or environmental conditions
  • Tethered objective lens caps and one-piece ocular rainguard protect the lens surfaces without the fear of losing them when not in use
  • Ergonomic winged angled eyecups block stray light from interfering with views while improving contrast and limiting distractions
  • Broad -4 to 158°F (-20 to 70°C) operating temperature range

Steiner 2051 Specs

Prism TypeRoof (BAK4)
Objective Lens Diameter42 mm
Angle of View6.7° (Actual)
Field of View355.42' @ 1000 yd / 118 m @ 1000 m
Minimum Focus Distance6.6' / 2 m
Exit Pupil Diameter4.2 mm
Diopter AdjustmentYes
Focus TypeCenter
FogproofYes, Nitrogen Filled
Water ResistanceWaterproof
Dimensions6.9 x 4.7 x 2.5" / 175.3 x 119.4 x 63.5 mm
Weight26.3 oz / 746 g
Packaging Info
Package Weight2.555 lb
Box Dimensions (LxWxH)8.95 x 6.65 x 3.5"
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Steiner 10x42 Peregrine Binocular. This item ...

Steiner 10x42 Peregrine Binocular. This item ships direct from the distributor. Who and when is the distributor? thank you.
Asked by: Amy
Steiner USA is the distributor. Currently the estimated time frame is 3-5 weeks.
Answered by: Dan
Date published: 2019-12-13
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