Barr & Stroud Sierra 12 x 50 Binoculars

Barr & Stroud Sierra 12x50 – High-Powered, Precision Binoculars for Detailed Viewing

The Barr & Stroud Sierra 12x50 is the most powerful model in the Sierra range, designed for those who demand maximum magnification in a rugged, high-performance binocular. If power and long-distance viewing are your top priorities, this model delivers exceptional clarity and reach, making it ideal for wildlife observation, surveillance, and long-range viewing.

With 12x magnification, this binocular brings distant subjects closer than ever, offering sharp, contrast-rich images under normal daylight conditions. While higher magnification makes it harder to hold steady than a 10x model and is less suited to low-light use, its 82m field of view at 1000m ensures a truly immersive viewing experience.

Why Choose the Barr & Stroud Sierra 12x50?

• Powerful 12x Magnification & 50mm Objective Lenses – Provides exceptional detail and clarity, perfect for long-range observation.
• Rugged, Weatherproof Build – Fully waterproof up to 1.5m for three minutes, ensuring protection against rain, splashes, and accidental submersion.
• Shock-Resistant, Rubber-Armoured Body – Offers enhanced durability and grip, protecting against bumps and knocks in harsh conditions.
• Fog-Free Viewing – Nitrogen-filled construction prevents internal fogging, allowing for clear performance in extreme weather conditions.
• Fully Multi-Coated Optics & BaK-4 Phase-Coated Prisms – Maximises light transmission for bright, high-contrast images with accurate colour reproduction.
• Rapid Focus System – The super-smooth focus control wheel allows for quick adjustments from close focus to infinity in under one turn.
• Twist-Up Rubber Eyecups – Designed for comfortable viewing with or without glasses, ensuring a custom fit for every user.
• Tripod Adaptable – Compatible with a tripod adaptor, providing steady, hands-free viewing when needed.

Included Accessories

• Carrying case
• Rain guards
• Tethered lens caps
• Neck strap
• Lens cleaning cloth

Technical Specifications

• Model: 12x50
• Magnification: 12x
• Objective Lens Diameter: 50mm
• Field of View at 1000m: 82m
• Angular Field of View: 4.7°
• Close Focus: 2.5m
• Eye Relief: 14.2mm
• Exit Pupil Diameter: 4.16mm
• Waterproof: Yes
• Nitrogen Filled: Yes
• Prism Design: Roof
• Prism Glass Type: BAK-4
• Phase Coated Prisms: Yes
• ED Optics: No
• Fully Multi-Coated Optics: Yes
• Water Repellent Lens Coating: No
• Body Material: Polycarbonate
• Open-Bridge Design: No
• Adjustable Eyecups: Twist-up
• Focusing System: Centre
• Interpupillary Distance: 56mm–74mm
• Dioptric Compensation Range: +4~-4
• Tripod Adaptor Bush: Yes
• Dimensions: 162 x 131 x 57mm
• Weight: 780g

The Barr & Stroud Sierra 12x50 is the ideal choice for users who need high-magnification performance in a durable, weatherproof design. Whether you're watching wildlife, surveying landscapes, or tracking distant subjects, these binoculars provide outstanding detail and reliability in a robust, user-friendly package.