Nikon 12x42 Monarch M5 Binoculars (Black) - Manual (Page 6)

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Specifications
Type: Dach prism central focusing type
Model
8Ч42 10Ч42 12Ч42
Magnification (×) 8 10 12
Effective diameter of objective
lens (mm)
42 42 42
Angular field of view (real) (˚) 6.4 5.6 5.1
Angular field of view (apparent) (˚)* 48.2 52.1 56.2
Field of view at 1,000m/yds. (m/ft.) 112/335 98/293 89/267
Exit pupil (mm) 5.3 4.2 3.5
Brightness 28.1 17.6 12.3
Eye relief (mm) 19.5 18.4 15.1
Close focusing distance,
approx. (m/ft.)
2.5/8.2 2.5/8.2 2.5/8.2
Length (mm/in.) 145/5.7 145/5.7 145/5.7
Width (mm/in.) 129/5.1 129/5.1 129/5.1
Depth (mm/in.) 54/2.1 54/2.1 54/2.1
Weight (g/oz.) 630/22.2 640/22.6 640/22.6
Interpupillary distance
adjustment (mm/in.)
56-72/2.2-2.8 56-72/2.2-2.8 56-72/2.2-2.8
Waterproof structure Waterproof (up to 1m/3.3 ft. for 10 minutes), fogproof
* Apparent field of view is calculated based on the ISO14132-1:2002 standard