Pentax UP 10x21 Binoculars
- 8X magnification
- 21mm lens objectives
- New fully multi-coated optics
- Dual-axis, single body design with synchronized eye-piece IPD adjustment
- High Quality BaK4 prism
- Aspherical lens elements
- Pull-up eyecups
- Eye-relief
- Inverted porro prism design
- 10 Years Warranty from CR Kennedy Australia
This U-series Pentax binoculars feature a unique inverted porro prism design with dual-axis, single body design with synchronized eye-piece IPD adjustment for better light transmission. Itsaspherical lens elements provide edge-to-edge sharpness and reduce aberrations. The new fully multi-coated lenses has the purpose of maximizing the rays of light passing through the lens, it therefore prevents flare and ghosting from the field of view. The pull-up eyecups provide comfortable eye-relief for longer viewing. Rubber housing is incorporated for a firm grip and extra protection. With 8X magnification and 21mm lens objectives, this model will provide a fine and compact companion on nature trips. It can reach a span of up to 108m field of view.
Product Features in Detail
New Fully-multi-coated optics
Fully multi-coated lenses serve the essential purpose of maximizing the amount of light passing through a lens, thereby prevent flare and ghosting from interfering with your view. PENTAX applies multiple layers of coatings to every surface of every element and prism in the full Sport Optics line-up. These fully-multi-coated optics assure the maximum light transmission resulting in a clear, crisp view of the world.
Aspherical lens elements
Edge-to-edge sharpness is a vital element to comfortable viewing. To achieve this, we utilise aspherical lens elements in our eyepieces. This is a specially shaped lens design that reduces aberration to a minimum.
Inner Focus Optics Design
This sophisticated optical design is critical to low-maintenance and long life guarantee. Exposure to airbourne particles and moisture is avoided, thereby ensuring that no outside influences can penetrate the housing and disrupt functionality.
Other Features
Helicoid four-stop eyepiece rings that permit fine adjustment for maximum viewing comfort.
Exterior rubber coating that provides the binoculars with superb resistance to shocks and impacts
Type | Porro Compact |
Magnification | 10x |
Objective Lens Diameter | 21 mm |
Field of View at 1000m | 87 m |
Exit pupil aperture | 2.1 mm |
Eye Relief | 9.5 mm |
Eyecups | Pull-up |
Height | 48 mm |
Width | 110 mm |
Depth | 83 mm |
Weight | 210 g |
Water proof | No |
Accessories | Objective and eyepiece caps, case, strap |
Prism coating | BK7 |
Lens coating | New fully multi-coated optics |
Twilight Factor | 14.5 |
Close focus | 2.8 m |
Tripod Adaptor | No |
Pentax UP 10x21 Binoculars
Eyepiece Cap
Objective Cap
Neck Strap
Case
10 years Australian Warranty with CR Kennedy

SKU: Pentax 61804
UPC: 0027075288812