The GPO Passion ED 8x42 (Dark Brown Earth) is a roof-prism field binocular engineered for wildlife observation and dynamic hunting scenarios. Built around an Extra-Low Dispersion (ED) optical system with proprietary GPObright fully multicoated lenses and phase-corrected Schmidt-Pechan roof prisms, it achieves 90% light transmission and delivers a 5.25 mm exit pupil for high-contrast viewing during dawn and dusk. Its magnesium-alloy chassis features a micro-bridge design, nitrogen purging for waterproof and fogproof reliability, and aluminium twist-up eyecups with 18.0 mm of eye relief for comfortable viewing with or without eyewear.

Key Features

• ED Optical Assembly: Extra-Low Dispersion objective lenses paired with GPObright multicoatings minimise chromatic aberration and maximise colour fidelity.
• Hydrophobic Lens Coatings: Outer glass elements feature PASSIONdrop coatings to actively shed water, moisture, and dirt in adverse weather.
• Magnesium-Alloy Housing: Rugged, lightweight magnesium body with an integrated micro-bridge provides balanced handheld stability.
• Tripod Adaptable: Includes a standard 1/4"-20 threaded socket for mounting onto tripod adapters during extended stationary glassing sessions.
• Close-Focus Capability: Resolves targets as close as 5.9 ft to 6.6 ft (1.8 m to 2.0 m) for near-field tracking and observation.

Technical Specifications

• Magnification: 8x
• Objective Lens Diameter: 42 mm
• Linear Field of View: 426 ft at 1,000 yards (141.4 m at 1,000 m)
• Exit Pupil: 5.25 mm
• Eye Relief: 18.0 mm
• Close Focus Distance: 5.9 ft to 6.6 ft (1.8 m to 2.0 m)
• Interpupillary Distance: 56–75 mm
• Light Transmission: 90%
• Prism System: Schmidt-Pechan roof prism (phase-corrected)
• Dimensions: 5.4 in x 5.0 in
• Weight: 26.0–26.1 oz (approx. 740 g)
• Environmental Protection: Nitrogen-purged, waterproof, and fogproof

Who is the GPO Passion ED 8x42 for?

• Stalk hunting in woodland and scrub — requires the wide 426 ft at 1,000 yards linear field of view provided by this roof-prism binocular to quickly acquire moving game in thick cover and dense timber.
• All-around field hunting and wildlife observation — benefits from the 90% light transmission and 8x magnification with a 42 mm objective lens, producing a 5.25 mm exit pupil that maintains target brightness during low-light dawn and dusk transitions while weighing just 26.0–26.1 oz for all-day carry.

Less suitable for: Long-range open plains or mountain glassing beyond 500–800 m where finer detail resolution is critical; higher-magnification 10x42 or 12x50 binoculars, or dedicated spotting scopes, are better suited for identifying distant targets across wide-open terrain.