The GPO PASSION™ ED 8x42 Binoculars (Desert Sand) are a roof-prism optical system engineered for close-to-mid-range observation in dense outdoor environments. Built around Extra-Low Dispersion (ED) glass elements and GPObright™ proprietary multi-coatings, the system achieves approximately 90% light transmission to minimize chromatic aberration and maintain edge-to-edge optical clarity. The internal Schmidt-Pechan roof prisms feature phase correction and dielectric coatings, housed within a rugged magnesium-alloy micro-bridge chassis wrapped in protective Desert Sand rubber armouring. Fully nitrogen-purged and O-ring sealed, this passive optical unit prevents internal fogging during rapid temperature shifts and operates without the need for batteries or electrical power.

Key Features

• ED Glass Optical System: Integrates Extra-Low Dispersion lenses to reduce colour fringing and deliver sharp, high-contrast imagery.
• Dielectric-Coated Prisms: Phase-corrected Schmidt-Pechan roof prisms maximize light throughput across the entire visual spectrum.
• Rugged Magnesium Chassis: Micro-bridge magnesium-alloy housing provides impact resistance at a carry weight of 740 g.
• All-Weather Construction: Nitrogen-purged and O-ring sealed body ensures waterproof and fogproof reliability in damp conditions.
• Ergonomic Viewing: Multi-step twist-up aluminum eyecups with 18 mm of eye relief accommodate both spectacle wearers and unassisted eyes.
• Tripod Adaptable: Includes a standard 1/4"-20 threaded socket for mounting onto tripod adapters during extended stationary glassing.

Product Specifications

• Magnification: 8x
• Objective Lens Diameter: 42 mm
• Field of View: 426 ft at 1,000 yards (142 m at 1,000 m / approx. 8.13°)
• Exit Pupil: 5.25 mm
• Eye Relief: 18 mm
• Close Focus Distance: 2.0 m (6.6 ft)
• Interpupillary Distance (IPD): 56 mm to 75 mm
• Diopter Adjustment: -4 to +4 dpt (right-eye diopter ring)
• Light Transmission: ~90%
• Dimensions: 145 mm (L) × 127 mm (W)
• Weight: 740 g
• Tripod Socket Thread: 1/4"-20

Who is the GPO Passion ED 8x42 for?

• Woodland and Bush Hunters — Operates with a large 5.25 mm exit pupil and ~90% light transmission, allowing this 8x42 roof-prism hunting binocular to gather sufficient light when tracking game under heavy forest canopy during low-light dawn and dusk periods.
• Birdwatchers and Wildlife Observers — Delivers a broad field of view of 426 ft at 1,000 yards alongside an 8x magnification and a 2.0 m close focus distance, enabling rapid scanning and steady tracking of moving subjects across dense mid-range scrub.

Less suitable for: Long-range observation exceeding 500–800 m across wide-open plains or alpine terrain where 10x magnification binoculars or dedicated spotting scopes are required, or ultralight backpacking setups requiring sub-500 g weight limits where compact 8x32 mm optics serve better.