- 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
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
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- 8x magnification
- 40mm objective lenses
- BAK4 porro prism optical path
- Anti-reflection fully multicoated optics
- 430.5' field of view at 1000 yards
- 65.6° wide-angle of view
- Use and Handling
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- 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
UPC: 027075288720
| Prism Type | Porro |
| Magnification | 8x |
| Objective Lens Diameter | 40mm |
| Angle of View | 8.2° (actual) |
| Field-of-View | 430.5' @ 1000 yd / 142.93 m @ 1000 m |
| Minimum Focus Distance | 19.8' / 6.04 m |
| Exit Pupil Diameter | 5.0 mm |
| Eye Relief | 13 mm |
| Interpupillary Adjustment | Not Specified By Manufacturer |
| Dioptric Correction | Not Specified By Manufacturer |
| Focus Type | Center |
| Tripod Mount | Yes (Adapter Optional) |
| Dimensions | 7.4 x 5.2 x 2.2" / 18.80 x 13.21 x 5.59 cm |
| Weight | 27.2 oz / 771 g |
| Packaging Info |
| Package Weight | 2.35 lb |
| Box Dimensions (LxWxH) | 8.3 x 6.4 x 3.2" |
In the Box
Pentax 8x40 S-Series SP Binocular
- Carrying Case
- Neck Strap
- 2 x Objective Lens Caps
- 2 x Eyepiece Caps
- Limited Lifetime Warranty
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