The Zeiss Conquest HDX 15x56 binocular is a premium high-magnification optic built for serious glassing work across open country, whether you're hunting, glassing for game, or undertaking long-distance surveillance from a fixed position. At 15x magnification with a 56 mm objective lens, this is the specialist choice when you need to resolve fine detail at extreme range—think glassing a distant ridgeline or scanning open desert for movement. The bright, high-contrast images hold up well in challenging light, and the robust construction paired with thoughtful ergonomics makes it a tool that works as hard as you do.
Built on Zeiss's HD optical platform and sealed against the elements with nitrogen filling and LotuTec lens coatings, the Conquest HDX 15x56 delivers the optical performance you'd expect from the brand without the luxury-tier price tag. The 3.7 mm exit pupil and 18 mm eye relief give you a workable field of view even at that high magnification, and the close focus distance of 3.5 meters means you're not locked out of subjects closer than you'd expect. Individual diopter adjustment lets you dial in your own eyes without guesswork, and the adjustable eyecup accommodates glasses wearers or those who prefer a different viewing geometry.
The included tripod adapter is no afterthought—at 15 magnification, mounting on a stable platform transforms these binoculars from a handheld tool into a dedicated spotting rig. That's especially useful for extended observation sessions where arm fatigue would otherwise limit your time glassing. Rated to operate from -20° to +63°C and sealed to 400 mbar, the Conquest HDX 15x56 is engineered to handle backcountry conditions without flinching.
Key Features
- 15x magnification with 56 mm objectives for maximum range performance
- HD optical system with 90% light transmission for bright, high-contrast images
- LotuTec coatings and nitrogen filling for weather resistance and durability
- Tripod adapter included for stable long-distance observation
- Individual diopter adjustment (-4.0 to +4.0 dpt) for personalized optical tuning
- 18 mm eye relief accommodates eyeglass wearers
- Abbe-König prism design for optical efficiency
Specifications
| Magnification | 15x |
| Objective Lens Diameter | 56 mm |
| Light Transmission | 90% |
| Exit Pupil Diameter | 3.7 mm |
| Exit Pupil Distance | 18 mm |
| Twilight Factor | 29.0 |
| Field of View @ 1000 m | 80 m (240 ft) |
| Subjective Viewing Angle | 69° |
| Close Focus Distance | 3.5 m (11.5 ft) |
| Diopter Adjustment Range | -4.0 to +4.0 dpt |
| Interpupillary Distance Range | 54–74 mm |
| Prism System | Abbe-König |
| Water Resistance Rating | 400 mbar |
| Length | 210 mm (8.3 in) |
| Width @ 65 mm IPD | 145 mm (5.7 in) |
| Weight | 1265 g (44.6 oz) |
| Operating Temperature Range | -20°C to +63°C (-4°F to 145°F) |
| Lens Type | HD |
| Sealing | Nitrogen filled, LotuTec |
Frequently Asked Questions
Can I mount the Zeiss Conquest HDX 15x56 on a tripod?
Yes. A tripod adapter is included with the binocular, allowing you to mount it on any standard tripod for stable, hands-free observation during extended glassing sessions.
What's the exit pupil and eye relief on this 15x56 binocular?
The exit pupil is 3.7 mm and the exit pupil distance (eye relief) is 18 mm. That eye relief works well for eyeglass wearers and gives you a comfortable viewing geometry at this high magnification.
How do these binoculars perform in low light?
The 56 mm objectives and 90% light transmission deliver bright, high-contrast images even in difficult lighting. The twilight factor of 29.0 indicates strong low-light performance, making the Conquest HDX 15x56 well-suited for dawn and dusk glassing when game is most active.
What's the close focus distance on the Conquest HDX 15x56?
The close focus distance is 3.5 meters (11.5 feet), giving you usable focus on subjects closer than you might expect at 15 magnification.

