Pentax 8x40 S-Series SP Binocular

Designed to provide an immersive experience for nature and bird watching, Pentax's 8x40 S-Series SP Binocular boasts a wide 65.6° angle of view and porro prisms that produce a rich depth of view. The 40mm objectives are fully multicoated to reduce reflection and maximize light transmission through the entire optical path without making them overly cumbersome for a long day on the trail. The coatings ensure bright and clear high-contrast images even in low-light, and its utilitarian 8x magnification brings subjects close while maintaining wide 430' field of view at 1000 yards to preserve situational awareness. The binocular sports a 13mm eye relief and the fold-down eyecups seal against the ocular cavity to block stray peripheral light which can dim images.

Optical Performance

• 8x magnification
• 40mm objective lenses
• BAK4 porro prism optical path
• Anti-reflection fully multicoated optics
• 142.93m field of view at 1000 yards
• 65.6° 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

• Internal focusing system
• Rubberized armoring protects against impacts and provides slip-resistant grip
• Tripod mountable with optional adapter