Pentax SD WP Binoculars

Pentax SD WP Binoculars

  • Phase-Corrected BAK4 Roof Prisms
  • Fully Multicoated Optics
  • Nitrogen-Filled, Water and Fogproof
  • Closed Bridge Configuration
  • Open Bridge Configuration (9x42)
  • Slip-Resistant Rubberized Armoring
  • Large Center Focus Wheel
  • Tripod Mountable with Optional Adapter
  • Twist-Up Rubber Eyecups
Brand: Pentax Code: 00ZPNTXSDWPBN

Pentax designed the 8x42 / 9x42 / 10x42 S-Series SD WP Binocular for a lifetime of rugged outdoor use in all weather and lighting conditions. The 42mm objectives are fully multicoated to reduce reflection and maximize light transmission through the entire optical path. Its roof prisms are phase-corrected to correct for chromatic aberrations ensuring bright and clear high-contrast images with true color rendition even in low-light. Its general purpose 8x magnification brings subjects close while maintaining a wide 60° angle of view to preserve situational awareness.

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 21mm eye relief and its twist-up eyecups ensure comfortable viewing with or without eye wear. Protective coatings on the exterior lens surfaces repel water, dirt, and oil to keep them clean for unobstructed viewing.

Optical Performance

  • 8x /9x /10x magnification
  • 42mm objective lenses
  • BAK4 roof prism optical path
  • Phase-corrected prism coatings virtually eliminate chromatic aberrations for increased contrast and true color rendition
  • Anti-reflection fully multicoated optics

Use and Handling

  • Closed bridge configuration
  • Large knurled center focus wheel
  • Right-eye diopter adjustment
  • Twist-up eyecups for use with our without eye wear
  • Tripod mountable with optional adapter


  • 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
  • Dust/water/grease repellent coatings keeps the optical surfaces clean

Prism Type



8x /9x /10x

Objective Lens Diameter

42 mm

Angle of View

7.5° (8x42), 6.1° (9x42), 6.0° (10x42)

Field of View

393.7' @ 1000 yd / 131.2 m @ 1000 m (8x42)
320.2' @ 1000 yd / 106.7 m @ 1000 m (9x42)
315.0' @ 1000 yd / 105.0 m @ 1000 m (10x42)

Minimum Focus Distance

53.6' / 16.3 m

Exit Pupil Diameter

5.2 mm (8x42), 4.7 mm (9x42), 4.2 mm (10x42)

Eye Relief

21 mm (8x42), 18 mm (9x42), 18 mm (10x42)

Interpupillary Adjustment

Not Specified by Manufacturer

Dioptric Correction

Not Specified by Manufacturer

Focus Type


Tripod Mount

Yes (Adapter Optional)


5.8 x 5.3 x 2.0" / 14.7 x 13.5 x 5.1 cm


22.5 oz / 637.9 g (8x42), 23.5 oz / 666.2 g (9x42), 21.7 oz / 615.20 g (10x42)

  • Pentax 8x /9x /10x 42 S-Series SD WP Binocular
  • Neck Strap
  • Carrying Case with Strap
  • 2 x Objective Lens Caps
  • 2 x Eyepiece Caps
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