Pentax 12x50 S-Series SP WP Binocular

Product Code. 1014657

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Details for Pentax 12x50 S-Series SP WP Binocular

BAK4 Porro Prism

Fully Multicoated Optics

Angle of View: 50°

Nitrogen-Filled, Water and Fogproof

Closed Bridge Configuration

Slip-Resistant Rubberized Armoring

Large Center Focus Wheel

Tripod Mountable with Optional Adapter

Fold-Down Rubber Eyecups

Designed for both astronomical and terrestrial use, Pentax's 12x50 SP S-Series WP Binocular can be used with confidence in all weather and conditions. The large oversized 50mm objectives are fully multicoated to reduce reflection and maximize light transmission through the entire optical path. Utilizing the traditional porro prism configuration gives scenes a rich depth of view for an immersive observation experience and provides a comfortable feel in the hand with a lot of surface area to maintain a sure grip. The large objectives and coatings maximize the amount of light getting to the user's eyes for exceptional low-light capabilities, and its high 12x magnification provides an immersive observation experience.

Complementing the optical performance are construction details made for the trail. The optical tubes are nitrogen-filled and O-ring sealed for fogproof performance and to make them submersible to as much as 3.3'. The binocular sports a generous 20mm eye relief and the fold-down eyecups seal against the ocular cavity to block stray peripheral light which can dim images and effect night adjusted vision.

Optical Performance

12x magnification

50mm objective lenses

BAK4 Porro prism optical path

Anti-reflection fully multicoated optics

220.5' field of view at 1000 yards

50° angle of view

Use and Handling

Closed bridge configuration

Large knurled center focus wheel

Right-eye diopter adjustment

20mm long eye relief, 4.2mm exit pupil

Fold-down rubber eyecups seal against ocular cavity and block stray peripheral light

Construction Details

Rubberized armoring protects against impacts and provides slip-resistant grip

Nitrogen-filled, fogproof and submersible to 3.3' (1m)

Internal focusing system helps to maintain waterproof seals

Tripod mountable with optional adapter


  • Prism Type ... Porro
  • Magnification ... 12x
  • Objective Lens Diameter ... 50 mm
  • Angle of View ... 4.2° (actual)
  • Field of View ... 220.5' @ 1000 yd / 73.5 m @ 1000 m
  • Minimum Focus Distance ... 117.3" / 3 m
  • Exit Pupil Diameter ... 4.2 mm
  • Eye Relief ... 20 mm
  • Focus Type ... Center
  • Tripod Mount ... Yes (Adapter Optional)
  • Dimensions ... 7.2 x 7.0 x 3.1" / 18.3 x 17.8 x 7.9 cm
  • Weight ... 38.1 oz / 1080.1 g
  • Packaging Info
  • Package Weight ... 3.25 lb
  • Box Dimensions (LxWxH) ... 9.2 x 9.1 x 4.0"

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