Specifications
* The number calculated by the formula [tan ω' = Γ x tan ω ]: Apparent field of view: 2ω', Magnification: Γ, Real
field of view: 2ω
** Without diopter adjustment
Model 8x42 10x42
Magnification ( x ) 8 10
Effective diameter of objective lens (mm) 42 42
Angular field of view (real) (°) 6.3 6.0
*Angular field of view (apparent) (°) 47.5 55.3
Field of view at 1,000m/yds. (m/ft.) 110/330 105/314
Exit pupil (mm) 5.3 4.2
Brightness 28.1 17.6
Eye relief (mm) 19.3 15.4
**Close focusing distance, approx. (m/ft.) 4.0/13.1 4.0/13.1
Interpupillary distance adjustment (mm) 56-72 56-72
Length (mm/in.) 175/6.9 172/6.8
Width (mm/in.) 129/5.1 129/5.1
Weight (g/oz.) 665/23.5 665/23.5
Type Roof prism central focusing