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Nikon 10x42 Aculon A211 Binoculars

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Product Description


  • Aspheric Lens Design
  • Lead- and Arsenic-Free Eco-Glass
  • BAK4 Traditional Porro Prism Design
  • Anti-Reflection Multi-Coated Optics
  • Wide Apparent Angle of View
  • Large Center Focusing Wheel
  • Slip-Resistant Rubber Armor
  • Tripod Mountable with Optional Adapter
  • Twist-Up, Click-Stop Rubber Eyecups


Nikon's black 10x42 Aculon A211 Binoculars are an ideal device for hunters, birders, and outdoor enthusiasts who require an optic that delivers high magnification for detailed observations of distant subjects while retaining the ability to observe quickly on the go, without the bulk and weight of larger models.


The enhanced light-gathering ability offered by the 42mm objectives helps to ensure bright and clear views, even in challenging situations like at dawn or dusk, or when peering into dense underbrush. Anti-reflection multi-coated aspherical lenses, made with environmentally friendly Eco-Glass elements, complement the BAK4 Porro prism light path to deliver high-contrast images with enhanced depth of field without edge distortion, as well as accurate color fidelity. Despite its 10x magnification, this version of the A211 has a wide field of view that helps to offset the appearance of visible hand shake that is common with high-power optics such as this, while presenting the user with spacious views.

The Aculon's sculpted rubber-armored housing is designed to fit naturally into the observer's hand and provide secure non-slip handling. It is offered here in a subdued black color. Twist-up rubber eyecups and a comfortable eye relief enable easy viewing without eye fatigue, especially during long observation sessions. The combination of image quality and user-friendly design make the 10x42 Aculon A211 a natural option for long-range glassing.

Optical Performance
  • Powerful 10x magnification allows for detailed observations of distant subjects
  • 42mm objective lenses improve light-gathering ability, even in challenging conditions such as at dawn and dusk, without the bulk or weight of larger objectives
  • Traditional Porro prism light path produces a rich depth of field, allowing the user to discern the relative distances between objects being viewed
  • High refractive index BAK4 prisms deliver a round exit pupil, and a crisp and clear image with limited edge distortion
  • Aspherical eyepiece lenses correct spherical aberration to produce clear and crisp images, with reduced edge distortion and astigmatism
  • Anti-reflection multi-coated optics produce neutral and accurate color fidelity, and improve contrast and image brightness
  • Wide apparent angle of view reduces the appearance of visible hand shake that is common when holding high-power optics such as this
  • 314-foot field of view at 1000 yards
Use and Handling
  • Large slip-resistant center focus wheel is easy to manipulate, even while wearing gloves
  • Right-eye dioptric correction compensates for individual user's optical prescription for clearer and sharper views
  • 56-72mm interpupillary adjustment range
  • Twist-up click-stop rubber eyecups for comfortable use with or without eyewear
  • Tripod mountable with optional adapter for hands-free use with reduced vibration and arm fatigue
  • 11.6mm eye relief allows easy viewing without eye fatigue, especially during long observation sessions
  • 4.2mm exit pupil will completely cover most pupils as they open and dilate in low light for a full and complete view without vignetting
Construction Details
  • Environmentally friendly Eco-Glass is made without lead or arsenic
  • Protective rubber armoring provides a comfortable slip-resistant grip even in cold weather
  • Ergonomically sculpted grips
  • One-piece tethered ocular rain guard protects eyecups
  • Objective lens caps can be clipped to neck strap to avoid losing them during observation sessions


Prism Type




Objective Lens Diameter


Angle of View

6.0° (actual)

Field of View

314.0' @ 1000 yd / 104.25 m @ 1000 m

Minimum Focus Distance

16.4' / 5 m

Exit Pupil Diameter

4.2 mm

Eye Relief

11.6 mm

Interpupillary Adjustment

56.0 - 72.0 mm / 2.2 - 2.8"

Dioptric Correction

Not Specified by Manufacturer

Focus Type


Tripod Mount

Yes (Adapter Optional)


7.3 x 5.7" / 18.5 x 14.5 cm


26.8 oz / 760.0 g


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