Nikon Aculon A211 8 -18x42 BAA817SA dvogled ACULON A211 Zoom series The black 8-18x42 Aculon A211 Binocular from Nikon is a handheld zoom 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.