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Nikon Introduces PROSTAFF 5 Binoculars

July 9, 2013

Nikon Vision Co., Ltd., a subsidiary of Nikon Corporation, is pleased to announce the release of four new PROSTAFF 5 binoculars: the 8x42, 10x42, 10x50 and 12x50.
These new models — even more user-friendly than the existing PROSTAFF 7 range — are perfect for people who are using fully waterproof binoculars for the first time for nature observation and other outdoor activities.
All four offer a bright field of view. Nikon particularly designed the two 50mm models of the series for users who put priority on a brighter field of view as they often observe their subjects in darker conditions.


PROSTAFF 5 8x42


PROSTAFF 5 10x42


PROSTAFF 5 10x50


PROSTAFF 5 12x50

Key Features

  • Multilayer-coated lenses for bright images
  • Long eye relief design ensures a clear field of view, even for eyeglass wearers
  • Turn-and-slide rubber eyecups with multi-click facilitate easy positioning of eyes at the correct eyepoint
  • Waterproof (up to 1m/3.3 ft. for 10 minutes) and fog-free with nitrogen gas
  • Lightweight body uses fibreglass-reinforced polycarbonate resin
  • Eco-glass optics that are free of lead and arsenic are used for all lenses and prisms

Specifications

PROSTAFF 5 8x42 PROSTAFF 5 10x42 PROSTAFF 5 10x50 PROSTAFF 5 12x50
Magnification (x) 8 10 10 12
Objective diameter (mm) 42 42 50 50
Angular field of view (Real/degree) 6.3 5.6 5.6 4.7
Angular field of view (Apparent/degree) 47.5 52.1 52.1 52.4
Field of view at 1,000m (m) 110 98 98 82
Exit pupil (mm) 5.3 4.2 5.0 4.2
Relative brightness 28.1 17.6 25.0 17.6
Eye relief (mm) 17.6 17.5 15.2 19.6 15.5
Close focusing distance (m) 5.0 5.0 5.0 5.0
Interpupillary distance adjustment (mm) 56-72 56-72 56-72 56-72
Weight (g) 645 630 650 630 815 790
Length (mm) 165 163 187 183
Width (mm) 130 130 140 140
Type Roof Roof Roof Roof

(Revised on August 20, 2013)

Note:
Apparent field of view is calculated based on the ISO14132-1:2002 standard.
tan ω' = Γ x tan ω
Apparent field of view: 2ω', Real field of view: 2ω, Magnification: Γ

  • The information is current as of the date of publication. It is subject to change without notice.

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