Pentax Binoculars AD 9x28 WP (53143)

The PENTAX AD-series features compact roof prism binoculars with objective lenses smaller than 40mm. These models are designed to be portable, durable, and easy to carry, making them the smaller and more convenient counterpart to the S-series. Despite their compact size, they provide excellent optical performance. The AD-series uses fully multi-coated lenses, phase-corrected BaK4 prisms, and enhanced light transmission coatings to deliver sharp images with superb contrast.

All the key features of the PENTAX roof prism range are present: inner focusing, water and dustproof construction, nitrogen-purged interiors, a fully rubberized body, a central focus wheel, and twist-up eyecups for comfortable handling and easy focusing. The modern design, compact build, and high-performance optics make these binoculars an outstanding choice for enjoyable viewing in various situations.

The PENTAX AD-series is ideal for users seeking a lightweight, compact, and durable binocular that delivers reliable optical performance, especially for travel and sporting activities.

Optical Features

• Fully multi-coated lenses maximize light transmission and reduce flare and ghosting, ensuring a clear and crisp image. Multiple layers of coatings are applied to every lens and prism surface.

• Enhanced light transmission coatings use advanced film-deposition technology to further increase brightness and provide accurate color rendition.

Specifications for PENTAX AD 9x28

• Type: Roof prism binoculars

• Magnification: 9x

• Objective lens diameter: 28 mm

• Exit pupil: 3.1 mm

• Eye relief: 18 mm

• Eyepiece cups: Rotatable

• Diopter adjustment: Right side

• Glass material: BaK-4

• Lens coatings: Phase coating and full multi-coating

• Focusing system: Central focusing

• Special features:

  • Waterproof and splash-proof

  • Suitable for eyeglass wearers

  • Includes protection bag, eyepiece cap, and narrow loop connector for strap

  • Threaded tripod connector

• Field of view (true): 5.6°

• Field of view at 1,000 m: 98 m

• Close focus limit: 3.0 m

• Light intensity: 9.7

• Twilight factor: 15.9

• Surface material: Rubber armouring

• Color: Black

• Dimensions: 117 mm (length) x 115 mm (width) x 44 mm (height)

• Weight: 365 g

• Series: AD

Recommended Uses

• Astronomy: Not recommended

• Bird watching: Not recommended

• Travel and sports: Very good

• Theatre: Moderate suitability

• Hunting: Not recommended

• Sailing: Not recommended