Pentax SP 10x50 WP Binoculars
Designed for both astronomical and terrestrial use, Pentax's 8x40 /10x50 /12x50 /20x60 SP S-Series WP Binocular can be used with confidence in all weather and conditions. The large oversized 40mm (8X40) /50mm (10X50, 12X50) /60MM (20X60) 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 10x 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 for 10x50, 12x50 & 20x60.
Optical Performance
- 8x 10x 12x 20x magnification
- BAK4 porro prism optical path
- Anti-reflection fully multicoated optics
Use and Handling
- Closed bridge configuration
- Large knurled center focus wheel
- Right-eye diopter adjustment
- 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 | 8x 10x 12x 20x |
| Objective Lens Diameter | 40 mm /50 mm /50 mm /60 mm |
| Angle of View | 6.3° (8x40) |
| Field of View | 330.7' @ 1000 yd / 110.2 m @ 1000 m (8x40) |
| Minimum Focus Distance | 74.9' / 22.8 m (8x40) |
| Exit Pupil Diameter | 5.0 mm (8x40) |
| Eye Relief | 20 mm / 21mm (20x60) |
| Interpupillary Adjustment | Not Specified by Manufacturer |
| Dioptric Correction | Not Specified by Manufacturer |
| Focus Type | Center |
| Tripod Mount | Yes (Adapter Optional) |
| Dimensions | 7.0 x 5.4 x 3.0" / 17.8 x 13.7 x 7.6 cm (8x40) |
| Weight | 31.8 oz / 901.5 g (8x40) |
| SKU | 65872 |
| Barcode # | 27075288683 |
| Brand | Pentax |
| Shipping Weight | 0.8220kg |
| Shipping Width | 0.150m |
| Shipping Height | 0.080m |
| Shipping Length | 0.180m |
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