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Pentax 20x60 S-Series SP WP Binocular

BAK4 Porro Prism Fully Multicoated Optics Angle of View: 44ø Nitrogen-Filled, Water and Fogproof Closed Bridge Configuration Large Center Focus Wheel Tripod Mountable with Optional Adapter Fold-Down Rubber...

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Product No. 1014658
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Description

BAK4 Porro Prism Fully Multicoated Optics

Angle of View: 44ø

Nitrogen-Filled, Water and Fogproof

Closed Bridge Configuration

Large Center Focus Wheel

Tripod Mountable with Optional Adapter

Fold-Down Rubber Eyecups

Designed for both astronomical and terrestrial use, Pentax's 20x60 S-Series SP WP Binocular can be used with confidence in all weather and conditions. The large oversized 60mm 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.

Complementing the optical performance are construction details made for the outdoors. 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 affect night-adjusted vision. Its over-sized objectives add weight and bias the center of gravity forward making user fatigue a concern and hand-shake a possibility, so to aid long observation sessions the binocular can be mounted on a tripod using an optional adapter.

Optical Performance

20x magnification

50mm objective lenses

BAK4 Porro prism optical path

Anti-reflection fully multicoated optics

115.5' field of view at 1000 yards

44ø angle of view

Use and Handling

Closed bridge configuration

Large knurled center focus wheel

Right-eye diopter adjustment

21mm long eye relief, 3.0mm 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