Nikon aculon a211 16x50 [8/22] Specifications

Specifications

*ApparentfieldofviewiscalculatedbasedontheISO14132-1:2002standard,andobtainedbythefollowingformula:

[tan ω' = Γxtanω]Apparentfieldofview:2ω',Magnification:Γ,Realfieldofview:2ω

** When minimum magnification (8x) is selected

*** When minimum magnification (10x) is selected

Type Porro prism central focusing type

Model

ACULONA211

7x35 8x42 10x42 7x50 10x50 12x50 16x50 8-18x42 10-22x50

Magnification (x) 7 8 10 7 10 12 16 8-18 10-22

Effective diameter of objective

lens (mm)

35 42 42 50 50 50 50 42 50

Angularfieldofview(real)(°) 9.3 8.0 6.0 6.4 6.5 5.2 4.2 4.6** 3.8***

Angularfieldofview

(apparent)(°)*

59.3 58.4 55.3 42.7 59.2 57.2 60.8 35.6** 36.7***

Field of view 1,000m (m/ft.) 163/488 140/420 105/314 112/335 114/341 91/272 73/220 80/241** 66/199***

Exit pupil (mm) 5.0 5.3 4.2 7.1 5.0 4.2 3.1 5.3** 5.0***

Brightness 25.0 28.1 17.6 50.4 25.0 17.6 9.6 28.1** 25.0***

Eye relief (mm) 11.8 12.0 11.6 17.6 11.8 11.5 12.6 10.3** 8.6***

Close focusing distance,

approx. (m/ft.)

5.0/16.4 5.0/16.4 5.0/16.4 8.0/26.2 7.0/23.0 8.0/26.2 9.0/29.5 13.0/42.7 15.0/49.2

Interpupillary distance

adjustment (mm)

56-72 56-72 56-72 56-72 56-72 56-72 56-72 56-72 56-72

Length(mm/in.) 118/4.6 145/5.7 145/5.7 180/7.1 179/7.0 179/7.0 179/7.0 163/6.4 197/7.8

Width (mm/in.) 185/7.3 185/7.3 185/7.3 197/7.8 197/7.8 197/7.8 197/7.8 185/7.3 197/7.8

Weight (g/oz.) 685/24.2 755/26.6 760/26.8 905/31.9 900/31.7 910/32.1 925/32.6 825/29.1 960/33.9