Bushnell R3-1042 10x42mm Roof Prism Binoculars BaK-4 Glass

The Bushnell R3-1042 delivers professional-grade optical performance with 10x magnification and 42mm objective lenses for exceptional light gathering capability. Advanced BaK-4 roof prism construction provides superior light transmission and edge-to-edge clarity compared to standard BK-7 glass systems.

What Makes This Different

BaK-4 prism glass offers 15-20% better light transmission than conventional BK-7 prisms, resulting in brighter images with reduced chromatic aberration. The roof prism design creates a more compact, streamlined profile while maintaining the optical quality of larger porro prism systems. Multi-coated lenses maximize light transmission across the entire visible spectrum for enhanced color fidelity and contrast.

Key Features

• 10x42mm configuration balances magnification power with field of view
• BaK-4 roof prisms deliver superior optical clarity and light transmission
• Multi-coated lenses reduce glare and increase brightness
• Rubber armor coating provides secure grip and impact protection
• Twist-up eyecups accommodate eyeglass wearers
• Center focus knob with diopter adjustment for precise focusing
• Waterproof and fog-proof construction for all-weather reliability

Field performance excels across hunting, wildlife observation, and sporting events where detail resolution matters. The 10x magnification brings distant subjects into clear view while the 42mm objective lenses gather sufficient light for dawn and dusk viewing sessions. Nitrogen purging prevents internal fogging in temperature extremes and humid conditions.

Technical Specs

• Magnification: 10x
• Objective Lens Diameter: 42mm
• Prism Type: BaK-4 roof prism
• Field of View: Approximately 330 feet at 1,000 yards
• Eye Relief: 15mm
• Close Focus Distance: 8.2 feet
• Weight: 24.7 ounces
• Dimensions: 5.7" x 5.1" x 2.2"
• Waterproof and fog-proof rated
• Limited lifetime warranty

Bushnell's R3 series represents proven optical engineering at an accessible price point. The BaK-4 glass upgrade alone justifies the investment for users demanding consistent optical performance across varied lighting conditions.