Nikon 16x50 Aculon A211 Binocular (Black)

Product #46544 | SKU BAA816SA | Nikon
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Aspherical Lens System, Eco-Glass Optics: Lead and Arsenic-Free


The black 16x50 Aculon A211 Binocular from Nikon is a handheld fixed-magnification optic with multicoated aspherical lenses and an ergonomically-designed housing. For the redesigned Aculon series, Nikon packages the Aculon A211 binoculars with environmentally-friendly Eco-Glass elements composed of responsibly-sourced arsenic-free material. The Aculon binocular's Porro prism design delivers enhanced depth of field, and its multicoated aspheric optical path with 50mm objective lenses deliver the image clarity, brightness, and flat FOV demanded by nature observers.

Also new to the 2013 version of the Aculon binocular is a sculpted rubber-armoured housing that is designed to fit comfortably into the observer's hand and provide non-slip handling. Grooved ridges atop the housing and a generously-sized focusing wheel enable adjustments to the interpupillary distance and the point of focus even while wearing gloves. Nikon's Turn-and-Slide eyecups allow quick adjustment to the eye relief. The combination of image quality and user-friendly design make the 16x50 Aculon A211 a cost-effective option for long-range glassing.


Optical Performance

  • Magnification: 16x
  • Objective lenses: 50mm diameter
  • Aspheric lenses improve edge sharpness
  • Eco-Glass: Arsenic and lead-free optics
  • Anti-reflective multicoated lenses
  • BAK4 prism glass
  • Apparent field of view: 60.8°
  • 12.6mm eye relief

Use and Handling

  • Turn-and-Slide rubber eyecups with multiple click-stop positions
  • Included tripod mounting adapter

Construction Details

  • Ergonomically contoured rubber armouring
  • Weight: 32.6 oz


Prism Type Porro
Magnification 16.0x
Objective Lens Diameter 50mm
Angle of View 4.2° (actual)
Field-of-View 220' @ 1000 yd / 73.04 m @ 1000 m
Minimum Focus Distance 29.5' / 8.99 m
Exit Pupil Diameter 3.1  mm
Eye Relief 12.6  mm
Interpupillary Adjustment Not specified by manufacturer
Dioptric Correction Not specified by manufacturer
Focus Type Centre
Tripod Mount Yes (Adapter Included)
Dimensions 7.8 x 7" / 19.81 x 17.78  cm
Weight 32.6 oz / 924.2 g


4.5 (based on 4 ratings)
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  • IAN
    I have waited some time to try these binoculars out under clear atmospheric conditions and I must dmit that I am impressed. Not so much with the quality of the images, per se, as the value for money these binoculars represent at their price-point. I shared them with a visitor from Canada yesterday while bird-spotting at a local eco-hot-spot, and she would also agree. Their performance at distance comes with a caveat, that they call for a tripod for steadiness in use. The angle-bracket supplied works quite well in this regard and I have added a quick-release plate compatible with all of my other gear, so I am able to whip the camera off the tripod if need be and substitute, the binoculars within seconds.
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  • Product: Nikon 16x50 Aculon A211 Binocular (Black)
  • Manufacturer: Nikon
  • Model: BAA816SA
  • SKU: BAA816SA
  • RM Product #: 46544

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