WX 7x50 IF/10x50 IF


Feature Icons

  • Roof (Dach) Prism Type
  • IF (Individual Focusing)
  • ED Lens
  • Full Multilayer Coating
  • Wide Field of View
  • Long Eye Relief
  • Waterproof

Application Icons

  • Stargazing
  • Maritime operations

Key Features

  • Employing eyepieces with superior optical performance, a super-wide field of view (apparent field of view of 66.6° for WX 7x50 IF, 76.4° for WX 10x50 IF) is achieved.
    Minimising astigmatism and coma aberration, a sharp and clear image is realised, while the sharpness of the image at the centre of the field is achieved all the way to the periphery of the super-wide field of view. Without perceiving the frame, you can experience a feeling as if you are spacewalking into a starry sky.
  • The Field Flattener Lens System is employed for compensating curvature of field from the centre to the very edge of the periphery. While realising a super-wide field of view, it assures a sharp and clear image across the entire field of view. The super-wide field of view allows you to take in a wide-sweeping view of star clusters or galaxies, while individual stars can be clearly seen as sharp points.
  • Using three ED (Extra-low Dispersion) glass elements in each tube, chromatic aberration that causes colour fringing is compensated at the very edge of the field of view, realising a contrast-rich and high-resolution image
  • High-quality multilayer coating which features uniformly high light transmittance across the entire visible range, is applied to all lenses and prisms to realise a more natural, clearer view. It reproduces the colours of stars in the night sky with fidelity.
  • Abbe-Koenig prisms that feature total reflection on all surfaces and have a high transmission rate are employed, for a brighter field of view
  • Applying a phase-correction coating on roof (Dach) surfaces of Abbe-Koenig prisms, which compensates phase shifts of light when reflecting inside prisms, results in high-resolution and high-contrast images
  • Optical design that realises both a super-wide field of view and long eye relief. The super-wide field of view can be enjoyed comfortably from edge to edge, even by eyeglass wearers.
  • Lead- and arsenic-free glass is used for all lenses and prisms
  • Turn-and-slide rubber eyecups with six-clicks facilitate easy positioning of the eyes at the correct eyepoint
  • Dioptre adjustment ring with index for easier adjustment
  • Waterproof structure that will not be affected if submerged in water to a maximum depth of 5m/16.4 ft for 10 minutes. (Under Nikon's testing conditions. Not designed for underwater usage.)
  • Airtight structure with a nitrogen-filled body that prevents the inside of the optical system from fogging and resists mould even with significant changes in temperature
  • Magnesium alloy is utilized, realising a sturdy, lightweight body that facilitate handheld viewing
  • 55mm filter (P=0.75) can be attached to objective lens
  • Comes with tripod adaptor TRA-5 that enables attaching to a tripod


Swipe horizontally to view full table.

Model name WX 7x50 IF WX 10x50 IF
Magnification (x) 7 10
Objective diameter (mm) 50 50
Angular field of view (Real/degree) 10.7 9.0
Angular field of view (Apparent/degree) 66.6 76.4
Field of view at 1,000m/yd. (m/ft) 188/563 157/472
Exit pupil (mm) 7.1 5.0
Relative brightness 50.4 25.0
Eye relief (mm) 17.7 15.3
Close focusing distance (m/ft) 12.3/40.4 20.0/65.6
Length (mm/in.) 272/10.7 291/11.5
Width (mm/in.) 171/6.7 171/6.7
Depth (mm/in.) 80/3.1 80/3.1
Weight (g/oz) 2,420/85.4 2,505/88.4
Interpupillary distance adjustment (mm/in.) 58-78/2.3-3.1 58-78/2.3-3.1
Diopter Adjustment (m-1) -6-+4 -6-+5
Type Roof (Abbe-Koenig) Roof (Abbe-Koenig)
  • Note:Apparent field of view is calculated based on the ISO14132-1:2002 standard. For details, click here.