Pentax SP 12x50 Binoculars
- BAK4 Porro Prisms
- Fully Multicoated Optics
- Wide Angle of View: 67°
- Closed Bridge Configuration
- Slip-Resistant Rubberized Armoring
- Center Focusing
- Tripod Mountable
- Fold Down Eyecups
Pentax's 12x50 S-Series SP Binocular features 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 its high 12x magnification provides an immersive observation experience whether users are bird watching or comet hunting.
The binocular sports a generous 11mm eye relief and the fold-down eyecups seal against the ocular cavity to block stray peripheral light which can dim images. Its 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 binocular can be mounted on a tripod using an optional adapter.
Optical Performance
- 12x magnification
- 50mm objective lenses
- BAK4 porro prism optical path
- Anti-reflection fully multicoated optics
- 0 field of view at 1000 yards
- 67° wide angle of view
Use and Handling
- Closed bridge configuration
- Large knurled center focus wheel
- Right-eye diopter adjustment
- 11mm eye relief, 4.2mm 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
Prism Type |
Porro |
Magnification |
12x |
Objective Lens Diameter |
50mm |
Angle of View |
5.6° (actual) |
Field of View |
294.0 @ 1000 yd / 98.0 m @ 1000 m |
Minimum Focus Distance |
191.5 / 58.4 m |
Exit Pupil Diameter |
4.2 mm |
Eye Relief |
11 mm |
Focus Type |
Center |
Tripod Mount |
Yes (Adapter Optional) |
Dimensions |
7.8 x 6.3 x 2.3" / 19.8 x 16.0 x 5.8 cm |
Weight |
31 oz / 878.85 g |
Brand: Pentax |
Code: 65904
APN: 0027075288744 |
Supplier Code: 65904
Brand: Pentax |
Code: 65904
APN: 0027075288744 |
Supplier Code: 65904
At a glance
- BAK4 Porro Prisms
- Fully Multicoated Optics
- Wide Angle of View: 67°
- Closed Bridge Configuration
- Slip-Resistant Rubberized Armoring
- Center Focusing
- Tripod Mountable
- Fold Down Eyecups