Pentax AD 9x28 WP Binoculars

Compact roof prism binoculars with 9x magnification and a 28 mm objective, delivering a bright, detailed image in a lightweight, fully waterproof body. The fully multi-coated optics and phase-corrected prisms ensure high contrast and true colour fidelity, while the nitrogen-filled housing prevents internal fogging in any weather.

Advantages

The Pentax AD 9x28 WP combines a powerful 9x zoom with a wide field of view of 98 m at 1000 m, making it easy to track moving subjects. Its rubber-armoured polycarbonate body provides a secure, non-slip grip and withstands rough handling. The long eye relief of 18 mm and twist-up eyecups offer comfortable viewing even for eyeglass wearers.

Suitable for

• Birdwatching and nature observation in damp or rainy conditions
• Hiking, travel, and outdoor sports where weight and size matter
• Spectator events such as concerts, sports, and airshows
• Marine and waterside use thanks to JIS Class 6 waterproofing

Key specifications

• Magnification: 9x
• Objective lens diameter: 28 mm
• Prism type: Roof prism with phase correction
• Lens coating: Fully multi-coated
• Field of view at 1000 m: 98 m
• Angular field of view: 5.6°
• Apparent field of view: 50.4°
• Exit pupil: 3.1 mm
• Eye relief: 18 mm
• Close focus distance: 3 m
• Waterproof: Yes, JIS Class 6
• Fogproof: Yes, nitrogen purged
• Interpupillary distance range: 56–74 mm
• Diopter adjustment: Right eye
• Relative brightness: 9.6
• Twilight factor: 15.87
• Body material: Rubber-armoured polycarbonate
• Colour: Black

Recommendations

For users who demand a rugged, all-weather binocular with strong magnification and a wide field of view, the Pentax AD 9x28 WP is an excellent choice. Its compact size and reliable waterproofing make it a dependable companion for outdoor adventures year-round.