Specifications – Nikon 8x42 Aculon A211 Binoculars (Black) User Manual
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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
• Specifications and design are subject to change without notice.
• No reproduction in any form of this "Instruction Manual," in whole or in part (except for brief quotation in critical articles or
reviews), may be made without written authorization from NIKON VISION CO., LTD.
• This product is not waterproof. Therefore, avoid getting it wet from rain, water splashes, etc.
• To keep your binoculars in excellent condition, Nikon Vision recommends regular servicing by an authorized dealer.