Description
Nikon Prostaff 3 Fieldscope 16-48×60 Lightweight and Compact for Easy Birdwatching
The PROSTAFF 3’s predecessor is the Spotter XL II, a popular entry-model Fieldscope for nature observation activities such as birdwatching. The PROSTAFF 3 Fieldscope has the same bright and clear field of view of the earlier model, while its lightweight design further enhances usability.
Tech Specs
Magnification (x) |
16-48 |
Objective diameter (mm) |
60 |
Angular field of view (Real/degree) |
2.3* |
Angular field of view (Apparent/degree)** |
35.6* |
Field of view at 1,000m (m) |
40* |
Exit pupil (mm) |
3.8* |
Relative brightness |
14.4* |
Eye relief (mm) |
19.0* |
Close focusing distance (m) |
10.0 |
Length x Width (mm) |
313 x 74 |
Weight (g) |
620 |
*When minimum magnification (16x) is selected.
**The apparent field of view is calculated from the following formula based on ISO14132-1:2002
tan ω' = Γ x tan ω (Apparent field of view: 2ω',
Magnification: Γ, Real field of view: 2ω)
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