Nikon 4x10DCF User Manual

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Nomenclature
①
Eyepieces
②
Rubber eyecups
③
Focusing ring
④
Objective lens
⑤
Interpupillary distance
⑥
Neckstrap eyelets
Specifications
Model 4x10D CF
Type Roof-prism central focusing type
Magnication (x) 4
Eective diameter of objective lens (mm) 10
Real eld of view (˚) 10.0
Angular eld of view (apparent) (˚)* 38.6
Field of view at 1,000m (m)
175
Exit pupil (mm) 2.5
Relative brightness 6.3
Eye relief (mm) 13.7
Close focusing distance (m)**
1.2
Interpupillary distance adjustment (mm)
57 — 72
Width (mm) 93 (96)***
Length (mm) 52
Weight (g) 65
* The number calculated by the formula [tan
ω'= Γ x tan ω]
Apparent field of view: 2ω'
, Magnification: , Real field of view: 2 ω
** With normal eyesight without accomodation *** With neckstrap eyelet
・ This product is not waterproof. Therefore, avoid getting it wet from rain, water splashes, etc.

Nikon 4x10DCF Specifications

General

Exit pupil	2.5 mm
Eye relief	13.7 mm
Magnification	4 x
Product color	Black
Objective diameter	10 mm
Real field of view	10 °
Apparent field of view	38.6 °
Closest focusing distance	1.2 m

Weight and Dimensions

Depth	52 mm
Width	93 mm
Weight	65 g