The Leupold BX-5 Santiam HD 10x50 Binoculars, part number 175854, are a full-size open-bridge magnesium roof prism binocular delivering 10x magnification on 50mm objectives, with a field of view of 101 m at 1,000 m (304 ft at 1,000 yds) and 19.3 mm of eye relief, at 893 g (31.5 oz).
Behind the 50mm objectives sit phase-coated BaK4 roof prisms and Leupold's Professional-Grade Optical System, with DiamondCoat 2 on the exterior lens surfaces and the Guard-ion hydrophobic coating that sheds rain and fingerprints. The open-bridge magnesium chassis is rubber-armoured and 100% waterproof and fog-proof, focuses down to 3.5 m (11.4 ft), adjusts from 56–74 mm between the eyes, and carries twist-up eyecups and a built-in 1/4-20 rotatable port for glassing from a tripod.
How It Compares
The 10x50 sits between the compact 42mm Santiam HD models and the tripod-bound 15x56. Its 50mm objectives and 19.3 mm of eye relief — the most generous in the line — make it the pick for first and last light, though at 893 g (31.5 oz) and a 3.5 m (11.4 ft) close focus it is a heavier, longer-reaching tool than the BX-5 Santiam HD 10x42, which shares the magnification in a 689 g body that focuses to 1.5 m. For more magnification on the same 50mm front, the BX-5 Santiam HD 12x50 narrows the field from 101 m to 91 m at 1,000 m and drops eye relief to 16.6 mm. Browse all binoculars, or see the full Leupold range.
Ideal For
- Night fox and vermin spotting, where the 50mm objectives and 19.3 mm of eye relief earn their weight at last light
- Hill deer stalking, where the larger objective is worth 893 g (31.5 oz) on the neck
- Roe stalking from a high seat, glassing the same rides for long spells
- Birding and general observation in poor light, across a 101 m field at 1,000 m (304 ft at 1,000 yds)
Key Features
-
Glass: Professional-Grade Optical System with phase-coated BaK4 roof prisms for bright, high-contrast glassing
-
Coatings: DiamondCoat 2 on the exterior lens surfaces plus the Guard-ion hydrophobic coating, which sheds rain and fingerprints
-
Optics: 10x magnification on 50mm objectives, 101 m field of view at 1,000 m (304 ft at 1,000 yds)
-
Eyecups: Twist-up, giving 19.3 mm of eye relief, so spectacle wearers can wind them flat and keep the full field
-
Housing: Open-bridge magnesium chassis, rubber-armoured, 100% waterproof and fog-proof
-
Focus: Close focus 3.5 m (11.4 ft), interpupillary adjustment 56–74 mm
-
Mount: Built-in 1/4-20 rotatable port for sustained glassing from a tripod
Technical Specifications
Magnification |
10x |
Objective Lens |
50mm |
Prism |
Phase-coated BaK4 roof prism |
Optical System |
Professional-Grade Optical System, DiamondCoat 2, Guard-ion |
Field of View |
101 m at 1,000 m (304 ft at 1,000 yds) |
Eye Relief |
19.3 mm |
Close Focus |
3.5 m (11.4 ft) |
Interpupillary Distance |
56–74 mm |
Chassis |
Open-bridge magnesium, rubber-armoured |
Tripod Compatible |
Built-in 1/4-20 rotatable port |
Waterproof / Fog-proof |
Yes |
Weight |
893 g (31.5 oz) |
SKU / MPN / UPC |
175854 / 175854 / 030317020507 |
What's Included
- BX-5 Santiam HD 10x50 binocular
- Lens covers
- Neck strap
- Carry case
- Lens cloth
UK Delivery & Support
Imported from the USA, duty paid by us, and dispatched tracked from the UK — nothing to pay on delivery — backed by UK-based support.
Frequently Asked Questions
Is 10x50 the right format for UK stalking?10x50 is the low-light choice. You get the same 10x as the 42mm model but behind 50mm objectives, plus 19.3 mm of eye relief — the most in the BX-5 Santiam HD line. The trade is weight: 893 g (31.5 oz) round the neck, and a close focus of 3.5 m (11.4 ft) rather than 1.5 m, so it suits open hill and high-seat work better than thick woodland.
Will the BX-5 Santiam HD 10x50 work with spectacles?Eye relief is 19.3 mm and the eyecups twist up and down, so you can wind them flat, keep your spectacles on and still see the full 101 m field at 1,000 m (304 ft at 1,000 yds).
Will it stand up to British weather?The BX-5 Santiam HD 10x50 has a rubber-armoured open-bridge magnesium chassis and is 100% waterproof and fog-proof, and the Guard-ion coating sheds rain and fingerprints from the exterior lens surfaces.
Can it be used on a tripod?Yes — the BX-5 Santiam HD 10x50 has a built-in 1/4-20 rotatable port, which is worth using for long spells glassing one hillside.
How does it compare with the 12x50?The BX-5 Santiam HD 12x50 uses the same 50mm objectives and weighs almost the same at 910 g (32.1 oz), but reaches further at the cost of field of view — 91 m rather than 101 m at 1,000 m — and eye relief, 16.6 mm rather than 19.3 mm.
Is this genuine Leupold stock?Yes — factory-new Leupold stock dispatched from the UK.
