Nikon 7X50IF SP WP

The Nikon 7x50IF SP WP is a premium optical instrument developed for demanding astronomical and long-distance observation. Its advanced optical design is specially optimised to minimise aberrations and maintain a clear, detailed image across the field of view. The stable 7x magnification is comfortable for handheld viewing, while the large 50 mm objective lenses collect plenty of light. A 7.1 mm exit pupil and relative brightness of 50.4 make the binocular particularly effective for stargazing, marine observation, landscapes, wildlife and twilight viewing. Multilayer coatings on the optical surfaces improve light transmission, contrast and image clarity. The wide 7.3° real angular field of view provides a 128 m field of view at a distance of 1,000 m. The binocular uses an individual focusing system, allowing each eyepiece to be adjusted separately. This type of focusing is especially suitable for astronomy, marine operations and prolonged observation where subject distance remains relatively constant. The body is sealed with O-rings and filled with nitrogen gas to reduce internal fogging. The Nikon 7x50IF SP WP is waterproof to a depth of 5 metres for up to 5 minutes, although it is not intended for underwater use. For prolonged viewing, the binocular can be mounted on a tripod using an optional Nikon TRA-5 or TRA-6 adapter. Optional polarising filters and horn-shaped rubber eyecups are also available.

 

 

 

 

 

Who is it for?

 

These binoculars are ideal for:

astronomy and stargazing;
boating, fishing and maritime operations;
nature, wildlife and landscape observation;
twilight and low-light viewing;
professional and prolonged observation;
users who demand premium optical precision.

 

Key advantages

Bright and stable image from 7x magnification and 50 mm objectives.
Large 7.1 mm exit pupil.
Optical design optimised for astronomical observation.
Excellent correction of optical aberrations.
Multilayer-coated lenses.
Wide 128 m field of view at 1,000 m.
Individual focusing for each eyepiece.
Comfortable 16.2 mm eye relief.
Waterproof to 5 m for 5 minutes.
Nitrogen filling helps prevent internal fogging.
Compatible with an optional tripod adapter.
Optional polarising filters are available.

 

Comparison with alternatives

 

Compared with standard Nikon 7x50IF WP binoculars, the 7x50IF SP WP is intended for more demanding optical observation and features a more advanced design optimised to reduce aberrations. The SP model is particularly suitable for astronomy and users who prioritise maximum optical precision.

Compared with 10x50 binoculars, the 7x magnification is easier to hold steadily and the 7.1 mm exit pupil provides a brighter view in low light. A 10x model reveals more distant detail but is more sensitive to hand movement and typically has a smaller exit pupil.

Compared with compact 7x35 or 8x30 binoculars, this model is significantly larger and heavier. However, the 50 mm objective lenses collect more light and perform better for astronomy and twilight observation.

 

 

FAQ

Is the Nikon 7x50IF SP WP waterproof?

 

Yes. It is waterproof to a depth of 5 metres for up to 5 minutes. It is not designed for underwater use.

 

 

Is it protected against internal fogging?

 

Yes. The sealed body is filled with nitrogen gas to help prevent the internal optical surfaces from fogging.

 

 

Is it suitable for astronomy?

 

Yes. The optical design is specially optimised for astronomical observation and reduced aberrations.

 

 

How is the binocular focused?

 

Each eyepiece is focused separately. Individual focusing is convenient when observing distant subjects whose distance changes very little.

 

 

Can it be mounted on a tripod?

 

Yes. An optional Nikon TRA-5 or TRA-6 tripod adapter is required.

 

 

Can it be used while wearing glasses?

 

Yes. The 16.2 mm eye relief provides comfortable viewing for many eyeglass wearers.

 

 

Specifications

Manufacturer: Nikon
Magnification: 7×
Objective diameter: 50 mm
Prism type: Porro
Focusing system: individual focusing
Real angular field of view: 7.3°
Apparent angular field of view: 48.1°
Field of view at 1,000 m: 128 m
Exit pupil: 7.1 mm
Relative brightness: 50.4
Eye relief: 16.2 mm
Close focusing distance: 12.4 m
Interpupillary distance adjustment: 56–72 mm
Length: 217 mm
Width: 210 mm
Depth: 80 mm
Weight: 1,515 g
Multilayer optical coating: yes
Waterproofing: up to 5 m for 5 minutes
Fog protection: nitrogen-filled
Tripod mounting: yes, with an optional adapter
Colour: black