Specifications – Nikon 20x56 Monarch 5 Binoculars (Black) User Manual
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Specifications
Type: Dach prism central focusing type
Model
8Ч42
10Ч42
12Ч42
8Ч56
16Ч56
20Ч56
Magnification (×)
8
10
12
8
16
20
Effective diameter of objective
lens (mm)
42
42
42
56
56
56
Angular field of view (real) (˚)
6.3
5.5
5.0
6.2
4.1
3.3
Angular field of view (apparent) (˚)*
47.5
51.3
55.3
46.9
59.6
59.9
Field of view at 1,000m/yds. (m/ft.)
110/330
96/288
87/262
108/325
72/215
58/173
Exit pupil (mm)
5.3
4.2
3.5
7.0
3.5
2.8
Brightness
28.1
17.6
12.3
49.0
12.3
7.8
Eye relief (mm)
19.5
18.4
15.1
20.5
16.4
16.4
Close focusing distance,
approx. (m/ft.)
2.5/8.2
2.5/8.2
2.5/8.2
7.0/23.0
5.0/16.4
5.0/16.4
Interpupillary distance
adjustment (mm)
56-72
56-72
56-72
60-72
60-72
60-72
Length (mm/in.)
145/5.7
145/5.7
145/5.7
199/7.8
199/7.8
199/7.8
Width (mm/in.)
129/5.1
129/5.1
129/5.1
146/5.7
146/5.7
146/5.7
Thickness (mm/in.)
54/2.1
54/2.1
54/2.1
67/2.6
67/2.6
67/2.6
Weight (g/oz.)
590/20.8
600/21.2
600/21.2
1,140/40.2 1,230/43.4 1,235/43.6
Structure
Waterproof (up to 1 metre for 10 minutes) and nitrogen gas filled
* The number calculated by the formula [tan ω' = Γ x tanω ]: Apparent field of view: 2ω', Magnification: Γ ,
Real field of view: 2ω
Waterproof models:
All models shown are waterproof, and will suffer no damage to the optical system if submerged or
dropped in water to a maximum depth of 1 meter for up to 10 minutes .
These products offer the following advantages:
• Can be used in conditions of high humidity, dust and rain without risk of damage.
• Nitrogen-filled design makes them resistant to condensation and mold.
Observe the following when using these products:
• As the unit does not have a perfectly sealed structure, it should not be operated nor held in running
water.
• Any moisture should be wiped off before adjusting movable parts (focusing knob, eyepiece, etc.) of
these products to prevent damage and for safety reasons.
To keep your binoculars in excellent condition, Nikon Vision recommends regular servicing by an
authorized dealer.
• 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.
Cleaning ED lens
Do not use an aerosol-type lens cleaner for cleaning the Binocular’s objective lenses. The quick freezing
effect of liquefied gas may break the lens. If an aerosol-type lens cleaner is used, carefully clean the
lenses by holding the can upright at least 30 cm from the lens surface while moving the can to avoid
focusing the vaporized liquid gas on one point.