Pentax 8x40 S-Series SP Binoculars
Description
Designed to provide an immersive experience for nature and bird watching, Pentax's 8x40 S-Series SP Binoculars boast 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 their utilitarian 8x magnification brings subjects close while maintaining wide 430' field of view at 1000 yards to preserve situational awareness. The binoculars sport a 13mm eye relief and the fold-down eyecups seal against the ocular cavity to block stray peripheral light which can dim images.
Details
Optical Performance
- 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
- 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
Technical Specs
|
Prism Type |
Porro |
|
Magnification |
8x |
|
Objective Lens Diameter |
40 mm |
|
Angle of View |
8.2° (Actual) |
|
Field of View |
432.2' / 143.5 m @ 1000 m |
|
Exit Pupil Diameter |
5 mm |
|
Prism Type |
Porro |
Performance
|
Magnification |
8x |
|
Objective Lens Diameter |
40 mm |
|
Angle of View |
8.2° (Actual) |
|
Field of View |
432.2' / 143.5 m @ 1000 m |
|
Minimum Focus Distance |
11.6' / 3.5 m |
|
Exit Pupil Diameter |
5 mm |
|
Eye Relief |
13 mm |
|
Diopter Adjustment |
Yes |
|
Focus Type |
Center |
General
|
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 |