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.
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
Swipe horizontally to view full table.
| 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) | (begin delete) |
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) | (begin delete) |
(begin delete) |
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
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The information is current as of the date of publication. It is subject to change without notice.