RICOH/PENTAX PENTAX AD 25 Waterproof 8x25 Binoculars

Optical Performance

These compact binoculars feature new fully multi-coated lenses, phase correction coating, BaK4 prisms, and enhanced light transmission coatings to deliver crystal sharp images with superb contrast. The fully multi-coated optics maximize light transmission, reducing flare and ghosting for a clear, crisp view. The BaK4 prisms provide a perfectly round exit pupil and clear, unvignetted images. Phase correction coatings optimize image quality in the roof prism design.

Durability and Waterproofing

The binoculars are fully waterproof and nitrogen-purged to JIS Class 6 standards, allowing submersion in up to 1 meter of water without damage. Nitrogen purging prevents internal fogging and condensation during rapid temperature changes and keeps dust and moisture out of the optical housing. The body is fully rubberized, providing excellent protection against shocks and impacts as well as a secure grip.

Design and Handling

• Inner focusing mechanism ensures low maintenance and long life by preventing dust and moisture ingress.
• Twist-up eyecups provide comfortable eye relief, especially beneficial for eyeglass wearers.
• Close focus distance of 3 meters allows detailed viewing of nearby objects.
• Compact dimensions (110 x 105 x 40 mm) and lightweight design (300 g) enhance portability.

Specifications

• Magnification: 8x
• Objective lens diameter: 25 mm
• Prism type: Roof prism
• Lens coating: Fully multi-coated (FMC) and phase correction coating
• Prism glass: BaK4
• Field of view at 1000 m: 96 m
• Close focus distance: 3 m
• Exit pupil diameter: 3.1 mm
• Eye relief: 21 mm
• Eyecups: Twist-up
• Waterproof rating: Yes (JIS Class 6)
• Tripod adapter: No
• Size (L x W x H): 110 x 105 x 40 mm
• Weight: 300 g
• Supplied accessories: Objective and eyepiece caps, carrying case, strap

A-Series Overview

The A-series includes roof and porro prism models with objective lenses smaller than 40 mm. This series offers compact, portable, and durable binoculars with advanced coatings for impeccable viewing quality, making them ideal for users seeking mobility without compromising optical performance.

Additional Features

• New enhanced light transmission coatings improve brightness and color accuracy.
• Long eye relief design allows comfortable viewing for extended periods.
• Rubber-covered body enhances shock resistance and grip.