Pentax UP 8×21 Porro Prism Binocular Summary
The compact Pentax UP 8×21 Porro Prism Binocular features a dual-axis, single body design with synchronised eyepiece adjustment. Aspherical lens elements provide edge-to-edge sharpness and clear images at an affordable price point.
The Pentax UP 8×21 optics are fully coated to provide maximum light transmission resulting in high quality viewing with minimal internal glare and flare. UP 8×21 is an easy to use model that incorporates reliable specifications in such a compact body.
Highlight features:
- Porro prism
- Aspherical lens
- High refractivity
- Full multi coated
- Rubber coat
Pentax UP 8×21 Porro Prism Binocular Specifications
| Series |
|
| Magnification | 8x |
| Effective Aperture of Objective Lens | 21mm |
| Angle of View | 6.2° |
| Field if View (at 1,000m) | 108m |
| Exit Pupil | 2.6mm |
| Eye Relief | 13mm |
| Relative Brightness | 6.8 |
| Minimum Focusing Distance | 2.8m |
| Height (approx.) | 83mm |
| Width (approx.) | 110mm |
| Thickness (approx.) | 48mm |
| Weight (approx.) | 210g |
| Offers: N/A |
| Offer Category: Optics |
| Offer Product Type: Binoculars |
| Colour: N/A |
| Diameter (mm): N/A |
| Height (mm): N/A |
| Length (mm): N/A |
| Width (mm): N/A |
| Weight (g): N/A |
| Environmental Sealing: N/A |
| Scope Close focus (m): N/A |
| Scope Eyerelief (mm): N/A |
| Focal length (mm): N/A |
| Scope Lens coating: N/A |
| Max magnification: N/A |
| Min magnification: N/A |
| Scope Objective lens (mm): N/A |
| Scope Type: N/A |
| Notes: N/A |












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