Optics Designed for Brighter Views
PROSTAFF 3S features an optical system created from lead-and-arsenic-free Eco-Glass. Multilayer coatings, which provide high light transmittance across the entire visible light spectrum, are applied for bright images. High-reflectivity silver-alloy mirror coating applied on the mirror surfaces of the prisms for a bright and clear view.
Rubber-Armored Design
PROSTAFF 3S has a rugged rubber-armored coating to provide a non-slip grip, even in the wettest conditions.
Long Eye Relief
Nikon has manufactured the PROSTAFF 3S binoculars, as well as many other of its optics, with a high-eyepoint design for long eye relief without vignetting. This provides a clear field of view for everyone, even when the user is wearing eyeglasses.
Specifications:
- Focusing System: Central Focus
- Magnification: 10x
- Objective Diameter: 42mm
- Angular Field of View (Real): 7.2°
- Angular Field of View (Apparent): 53.4°
- FOV at 1000 yds: 377 ft.
- Close Focus Distance: 9.8 ft.
- Exit Pupil: 5.3mm
- Relative Brightness: 28.1
- Eye Relief: 20.2mm
- Size (Length x Width): 6x5.1 in.
- Weight: 19.9 oz.19.9 g
- Waterproof / Fogproof: Yes
- Prism: Roof
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