Pentax SP 8x40 Binoculars
- BAK4 Porro Prism
- Fully Multicoated Optics
- Wide-Angle of View: 65.6°
- Closed Bridge Configuration
- Slip-Resistant Rubberized Armoring
- Large Center Focus Wheel
- Tripod Mountable with Optional Adapter
- Fold-Down Rubber Eyecups
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
- 5' field of view at 1000 yards
- 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
Prism Type |
Porro |
Magnification |
8x |
Objective Lens Diameter |
40mm |
Angle of View |
8.2° (actual) |
Field of View |
430.4 @ 1000 yd / 143.5 m @ 1000 m |
Minimum Focus Distance |
127.8 / 39 m |
Exit Pupil Diameter |
5.0 mm |
Eye Relief |
13 mm |
Focus Type |
Center |
Tripod Mount |
Yes (Adapter Optional) |
Dimensions |
7.4 x 5.2 x 2.2 / 18.8 x 13.2 x 5.6 cm |
Weight |
27.2 oz / 771.1 g |
Brand: Pentax |
Code: 65902
APN: 0027075288720 |
Supplier Code: 65902
Brand: Pentax |
Code: 65902
APN: 0027075288720 |
Supplier Code: 65902
At a glance
- BAK4 Porro Prism
- Fully Multicoated Optics
- Wide-Angle of View: 65.6°
- Closed Bridge Configuration
- Slip-Resistant Rubberized Armoring
- Large Center Focus Wheel
- Tripod Mountable with Optional Adapter
- Fold-Down Rubber Eyecups