Pentax Binoculars SD 10x42 WP (49527)

Pentax SD 10x42 WP binoculars are part of the S-series, which includes both roof and porro prism models with objective lenses larger than 40mm. These binoculars are designed for users who want bright, high-contrast viewing in demanding outdoor conditions. The S-series features advanced light transmission coatings, and waterproof porro prism models also include a hydrophobic coating for clear, contrast-rich images even in harsh weather.

Optical Performance:
The binoculars use fully multi-coated lenses, with multiple layers of coatings on every lens and prism surface. This maximizes light transmission and reduces flare and ghosting, resulting in clear, crisp images. Enhanced light transmission coatings further increase brightness and color accuracy. BaK4 prisms provide a high refractive index for a perfectly round exit pupil and clear, unvignetted images. Phase correction coatings on the roof prisms improve image sharpness and color fidelity.

Durability and Protection:
A protective nano-coating is applied to the exterior lens surfaces to repel water, oil, dust, and dirt. The binoculars are fully sealed and nitrogen-purged, making them waterproof and fogproof. They can be submerged in up to one meter of water (JIS Class 6 rating). The inner focus optics design helps prevent airborne particles and moisture from entering the housing, ensuring long-term reliability and low maintenance.

User Comfort and Accessories:
Long eye relief (18 mm) allows comfortable use for eyeglass wearers. Twist-up eyecups offer easy adjustment for optimal viewing. The central focusing system ensures precise focusing, and a threaded tripod connector is included for stable, hands-free viewing. Accessories provided include objective and eyepiece caps, a carrying case, and a neck strap.

Specifications for Pentax SD 10x42 WP:
Type: Roof prism
Magnification: 10x
Objective lens diameter: 42 mm
Exit pupil: 4.2 mm
Eye relief: 18 mm
Eyepiece cups: Rotatable, twist-up
Glass material: BaK-4
Lens coating: Phase coating and full multi-coating
Focusing system: Central focusing
Diopter adjustment: Right side
Splash-proof and waterproof (JIS Class 6)
Nitrogen-filled and fogproof
Protection bag, lens covers, and eyepiece caps included
Threaded tripod connector
Strap fitting: Wide loops connector
Field of view (true): 6.0°
Field of view at 1,000 m: 105 m
Close focus limit: 2.5 m
Relative brightness: 17.6
Twilight factor: 20.5
Surface material: Rubber armouring
Colour: Anthracite
Length: 144 mm
Width: 134 mm
Height: 52 mm
Weight: 615 g
Series: SD

Recommended Uses:
Astronomy: Moderate
Bird watching: Good
Hunting: Good (especially for stalking)
Travel and sports: Good
Sailing: Moderate
Theatre: Not recommended

These binoculars are built for durability, comfort, and high performance, making them an excellent choice for a wide range of outdoor activities.