Pentax 10×50 S-Series SP Binoculars

Introduction

Designed for both astronomical and terrestrial use, Pentax’s 10×50 S-Series SP Binoculars feature 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 their high 10x magnification provides an immersive observation experience whether users are bird watching or comet hunting.

The binoculars sport a generous 13mm eye relief and the fold-down eyecups seal against the ocular cavity to block stray peripheral light which can dim images. Their 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 binoculars can be mounted on a tripod using an optional adapter.

Optical Performance

• 10x magnification
• 50mm objective lenses
• BAK4 porro prism optical path
• Anti-reflection fully multicoated optics
• 341.3” field of view at 1000 yards
• 64 wide angle of view

Use and Handling

• Closed bridge configuration
• Large knurled center focus wheel
• Right-eye diopter adjustment
• 13mm eye relief, 5.0mm 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
• Tripod mountable with optional adapter