The GPO Passion ED 8x56 binocular is an optical system engineered for maximum light gathering during deep twilight, dawn, and moonlit viewing conditions. Featuring large 56 mm Extra-Low Dispersion (ED) objective lenses paired with Abbe-Koenig roof prisms and proprietary GPObright multi-coatings, it achieves 92% to 93% daylight transmission. Built with a magnesium micro-bridge body, rubber armouring, and aluminium eyecups, this nitrogen-purged and waterproof optic delivers a stable handheld platform with an expansive 7.0 mm exit pupil to match fully dilated pupils in low-light environments.

Key Features

• Abbe-Koenig Roof Prisms: Delivers high light transmission without the optical phase loss common to standard Schmidt-Pechan prism systems.
• Large Optical Aperture: Combines 56 mm ED objective lenses with an 8x magnification to produce an ultra-bright 7.0 mm exit pupil.
• Wide Field of View: Offers a 129 m field of view at 1,000 m alongside a 2.5 m close-focus distance.
• Rugged Magnesium Chassis: O-ring sealed for waterproof integrity and nitrogen-purged for fogproof performance in demanding weather.
• Ergonomic Eyepieces: Features 19 mm of eye relief, multi-step aluminium twist-up eyecups, and an integrated central diopter adjustment.
• Tripod Adaptable: Includes a standard 1/4"-20 threaded socket for stationary mounting.

Specifications

• Magnification: 8x
• Objective Lens Diameter: 56 mm
• Exit Pupil Diameter: 7.0 mm
• Eye Relief: 19 mm
• Field of View: 129 m at 1,000 m (389 ft at 1,000 yds)
• Close Focus Distance: 2.5 m (8.2 ft)
• Interpupillary Distance: 58 mm to 75 mm
• Prism Type: Abbe-Koenig roof prisms
• Light Transmission: 92% to 93% (GPObright multi-coating)
• Dimensions: 192 mm length
• Weight: 1,160 g (40.9 oz)
• Mounting Interface: 1/4"-20 tripod thread

Who is the GPO Passion ED 8x56 for?

• High-seat and blind hunters — relies on the 56 mm objective lenses and large 7.0 mm exit pupil to maintain target identification and brightness in deep twilight or moonlit conditions from stationary positions.
• Low-light wildlife observers — utilizes the 8x magnification and Abbe-Koenig optical system of this low-light hunting binocular to track nocturnal animal movement without optical phase degradation.
• Handheld wide-field stargazers — benefits from the 1,160 g magnesium chassis and 8x magnification, which deliver a steady, shake-free handheld viewing platform across wide night-sky vistas.

Less suitable for: Active backpack hunting or long-distance stalking over rugged terrain where carry weight exceeds 1,000 g (a lighter 8x32 or 8x42 binocular is better suited), or high fine-detail identification at extreme distances requiring magnification greater than 8x (where a 10x56, 15x56, or dedicated spotting scope is preferred).