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Designed for both astronomical and terrestrial use, Pentax's 12x50 S-Series SP Binocular features large oversized fully multicoated 50mm objectives 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 whether users are bird watching or comet hunting.
The binocular sports a generous 11mm eye relief and the fold-down eyecups seal against the ocular cavity to block stray peripheral light which can dim images. 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.
50mm objective lenses
BAK4 porro prism optical path
Anti-reflection fully multicoated optics
294.0'' field of view at 1000 yards
67° wide angle of view
Use and Handling
Closed bridge configuration
Large knurled center focus wheel
Right-eye diopter adjustment
11mm eye relief, 4.2mm exit pupil
Fold-down rubber eyecups seal against ocular cavity and block stray peripheral light
Rubberized armoring protects against impacts and provides slip-resistant grip