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Nikon 16x50 Aculon A211 Binocular (Black) Bak-4 porro prism 


Optical Performance

Powerful 16x magnification allows for highly detailed observations of distant subjects

Large 50mm objective lenses improve light-gathering ability to ensure distant views remain bright and sharp for better resolution, even in challenging light conditions

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 61° apparent angle of view reduces the appearance of visible hand shake that is common when holding high-power optics such as this

220-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

Fold-down rubber eyecups for comfortable use with or without eyewear

Tripod mountable with adapter for hands-free use with reduced vibration and arm fatigue

12.6mm eye relief allows easy viewing without eye fatigue, especially during long observation sessions

3.1mm exit pupil

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

Tripod adapter included for hands-free use to eliminate the vibrations, shakes, and arm fatigue that are common when holding high-power/large-objective optics

One-piece tethered ocular rainguard protects eyecups

Objective lens caps can be clipped to neck strap to avoid losing them during observation sessions

Weight: 32.5 ounces

Nikon 16x50 Aculon A211 Binocular (Black) Bak-4 porro prism