Mounts
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Nikon 7x50 IF SP WP is designed for dusk or twilight watching. Its wide 7.1mm exit pupil and high quality lens coatings enables quality stars observation. Housing is also made to be waterproof and therefore very suitable for night sailors. Optical characteristics of these binoculars, made at Japan, are at the top-level expected from Japanese manufacturer. Nikon Standard series represent the dying breed of extremely high quality binoculars, to which today style or trend is not in a favour. All the binoculars of this series can be commended with outstanding build quality, the best glass for lenses and prisms and superb modern lens coatings, which assures good light transmission rate and very sharp, contrast image. This series uses Porro prism system, which is in compare to now-day technology and rival binoculars some sort old-fashion, but still has quite a few optical advantages. In fact it offers the same and even more as other rival binoculars designed with Roof prism system for lower price and a little different construction. The housing is sealed and filled with nitrogen to enable the use at sea and very low temperatures. The models with 70mm lens are especially suitable for watching the stars.
Binoculars series | Nikon Astronomy WP |
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Warranty | - |
Type of prism | Porro |
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Variable magnification | No |
Magnification. | $7.00 |
Lens size diameter. | $50.00 |
Exit pupil. | $7.10 |
Field of view - FOV... | $128.00 |
Field of view (angular). | $8.22 |
Apperent FOV (angular). | $53.86 |
Eye relief distance. | $18.41 |
Closest focusing distance. | $13.77 |
Twilight Factor | 18.71 |
Relative Brightness | 50.4 |
Lens coatings | Fully Multicoated |
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Length. | $217.00 |
Width. | $236.99 |
Height. | $89.82 |
Weight. | $1,663.81 |
Filled with | Nitrogen |
Focusing system | Separated for each eye |
Minimal interpupillary distance. | $56.00 |
Maximal interpupillary distance. | $72.00 |
Type of Body | Single hinge |
Water proof | Yes |
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Fogproof | Yes |
Built-in Compass | No |
Built in Range finder | No |
Image stabilization (IS) | No |
Able to float | No |
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