Pentax UP 8-16x21 Zoom Binoculars

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. Its aspherical 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 8-16X 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 87/52m field of view. UP 8-16x21 WP binoculars are made to be fully sealed against fog and harsh weather.

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.

BaK4 prisms
Due to its outstanding refractive index, the BaK4 glass prism found in all PENTAX Sport Optics is highly acclaimed for its perfectly round exit pupil and clear, unvignetted image.

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.

Long eye relief design
The long eye relief offered in all PENTAX Sport Optics allows the viewer to see the entire field of view clearly and effortlessly. This is especially beneficial to eyeglass wearers, and allows viewing for extended periods of time without added eye strain.

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.