Pentax UP 10×21 Binoculars

PENTAX UP 10X21 BINOCULARS

The Pentax UP 10×21 Binoculars combine powerful 10x magnification with an exceptionally compact design. Their lightweight construction makes them ideal for travel, concerts, sporting events and everyday observation.

Despite their compact size, these binoculars feature BaK4 Porro prisms and fully multi-coated optics. Aspherical lens elements further enhance image quality by helping reduce distortion across the viewing area.

The innovative dual-axis single-body design keeps the binoculars compact while synchronising the movement of the eyepieces. This helps simplify adjustment and reduces the number of moving components within the binoculars.

Key Features

1. Powerful 10x Magnification

The 10x magnification brings distant subjects significantly closer for detailed observation. This makes the Pentax UP 10×21 particularly useful when extra reach matters.

Watch sporting events, explore scenery or observe wildlife with greater detail. The compact body also makes 10x magnification easier to take wherever you go.

2. Compact 21mm Objective Lenses

The 21mm objective lenses provide a practical balance between optical performance and portability. Their compact dimensions help keep the binoculars lightweight and easy to carry.

This makes them particularly appealing for travellers and spectators. They can easily be stored in a small bag or carried around the neck throughout the day.

3. BaK4 Porro Prism Optical System

BaK4 Porro prisms provide excellent optical performance within the compact binocular design. The prism system helps deliver a clear and well-defined viewing experience.

The Porro prism configuration also contributes to the binoculars’ traditional optical character. It provides a proven design for users who value compactness and image quality.

4. Fully Multi-Coated Optics

Fully multi-coated optics help maximise light transmission through the optical system. This contributes to improved brightness, contrast and overall image clarity.

The coatings also help reduce unwanted reflections within the optical path. This allows the binoculars to provide a clearer view across different everyday viewing situations.

5. Aspherical Lens Elements

Aspherical lens elements help reduce optical distortion across the image. They also contribute towards improved sharpness from the centre towards the edges.

This is particularly beneficial when viewing detailed subjects. The result is a more consistent viewing experience across the binoculars’ field of view.

6. Dual-Axis Single-Body Construction

The Pentax UP 10×21 uses an innovative single-body construction. This design synchronises the eyepiece movement when adjusting the binoculars to your eyes.

The objective lenses remain housed within the same body structure. This reduces moving components and contributes to a compact, robust design.

7. Wide 5° Angle of View

The binoculars provide a 5° angle of view. This corresponds to approximately 87.5m at a distance of 1,000m.

The broad viewing area makes it easier to locate subjects and follow activity. This is useful for sports, wildlife, sightseeing and general outdoor observation.

8. Comfortable Focusing and Eyecups

A centre focusing system provides straightforward adjustment when switching between subjects. Sliding eyecups allow users to adjust the viewing position to suit their eyes.

The 9.5mm eye relief provides a compact optical design suitable for many everyday viewing applications. The simple controls also make the binoculars easy to operate.

9. Lightweight Travel Design

The Pentax UP 10×21 weighs approximately 209.8g. This makes them particularly easy to carry during travel, sightseeing and outdoor activities.

Their dimensions measure approximately 110 × 83 × 48mm. The compact body can be stored easily when the binoculars are not being used.

10. Complete Carrying Package

The Pentax UP 10×21 includes a neck strap for convenient carrying. A protective carrying case also helps protect the binoculars during transport.

Eyepiece covers provide additional protection for the optical surfaces. Together, these accessories make the binoculars ready for travel and everyday use.

Specifications

• Magnification: 10x
• Objective lens diameter: 21mm
• Prism type: BaK4 Porro prism
• Optical coatings: Fully multi-coated
• Lens elements: Aspherical
• Angle of view: 5°
• Field of view: Approximately 87.5m at 1,000m
• Exit pupil: 2.1mm
• Eye relief: 9.5mm
• Focusing system: Centre focus
• Eyecups: Sliding
• Construction: Dual-axis single-body design
• Weight: Approximately 209.8g
• Dimensions: Approximately 110 × 83 × 48mm
• Included accessories: Neck strap, carrying case and eyepiece covers

Conclusion

The Pentax UP 10×21 Binoculars offer an excellent combination of magnification, portability and optical performance.

Their 10x magnification provides useful reach while the 21mm objectives maintain a compact overall design. BaK4 Porro prisms and fully multi-coated optics support clear and detailed viewing.

Aspherical lens elements further improve optical performance by reducing distortion and enhancing edge-to-edge sharpness. The dual-axis single-body construction also keeps the binoculars simple and portable.

At approximately 209.8g, these binoculars are easy to carry throughout the day. They are an excellent choice for travel, sporting events, concerts, sightseeing and casual wildlife observation.

For users seeking compact binoculars with powerful 10x magnification, the Pentax UP 10×21 is a versatile everyday option.

Description:

Pentax UP 10×21 binoculars with BaK4 Porro prisms, fully multi-coated optics and compact 209.8g design.