Specifications – Nikon PROSTAFF User Manual

Page 6

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6

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

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