Vortex Diamondback HD 8x28

• HD optical system: Selected glass elements help reduce chromatic aberration, so distant birds, game and terrain details appear cleaner and more natural in color.
• Compact 8x28 format: The smaller body is easy to carry all day, while 8x magnification still gives enough reach for travel, hiking and quick field observation.
• 18 mm eye relief: The generous eye relief makes the binocular easier to use with eyeglasses and helps maintain a full image without constant repositioning.
• Roof prism design with phase correction: The Schmidt/Pechan prism system keeps the binocular slim, while phase-correction and dielectric coatings support better contrast and image brightness.
• Argon-purged waterproof construction: Fogproof, waterproof sealing helps the binocular stay dependable when moving between temperature changes or using it in wet weather.

About the Vortex Diamondback HD Series

Vortex Diamondback HD binoculars sit in the brand’s broad hunting and wildlife-observation range as a practical line that balances portability, optical quality and field durability. The series is built around an HD optical system that uses selected glass elements to reduce chromatic aberration, helping improve color fidelity and fine detail when scanning animals, birds or distant landmarks. Across the range, fully multi-coated lenses, dielectric prism coatings and phase-correction coatings work together to support brightness, contrast and a cleaner image through roof prisms.

The lineup covers several formats, from compact 28 mm models to mid-size and larger objective versions, with magnifications extending from 8x to 15x. That gives the series a wide spread of uses, from lightweight day hikes and travel to longer glassing sessions in open country. The design philosophy stays consistent throughout: a roof-prism layout for easier packing, weather-sealed construction for outdoor use, and straightforward controls that suit both occasional users and experienced hunters who want dependable binoculars without moving into a heavier class.

About the Vortex Diamondback HD 8x28

The Vortex Diamondback HD 8x28 is the most compact kind of binocular many users can carry constantly rather than leave behind. Its 8x magnification gives enough reach for identifying wildlife, following movement across a field edge or studying architectural and landscape detail, while the 28 mm objective lenses keep the body short and light for travel, hiking and general outdoor use. This balance makes it especially useful when low bulk matters more than maximum twilight performance.

The optical system is tuned for practical field clarity rather than sheer size. Fully multi-coated lenses improve light transmission, and the Schmidt/Pechan roof prisms use dielectric and phase-correction coatings to maintain contrast and resolution in a slim housing. The result is a binocular that handles daylight observation well and still gives a composed, detailed image when conditions become overcast. A 108.50 m/1000m field of view helps with locating moving subjects, while the 1.80 m close focus is useful for nearby observation of insects, plants or details on the trail.

In use, the Diamondback HD 8x28 is straightforward and comfortable. The central focusing system allows quick adjustment with minimal hand movement, and the 18.00 mm eye relief is a real advantage for eyeglass wearers. At 397.00 g and only 117.00 mm long, it remains easy to pack into a day bag or wear on a strap for extended walks. Argon filling, waterproofing and fogproof construction add the kind of environmental protection expected from serious compact hunting optics and outdoor binoculars.

About Vortex

Vortex traces its roots to a Wild Birds Unlimited store opened by the Hamilton family in Madison, Wisconsin, in 1986. The Vortex brand entered the sport optics market in 2002, and the company is now headquartered in Barneveld, Wisconsin. It is employee-owned and operated and focuses on optics for hunting, shooting and general outdoor use.

The company’s catalog covers binoculars, riflescopes, spotting scopes, laser rangefinders and red dots, with established product families such as Razor, Viper and Kaibab. Vortex also develops supporting technology for shooters, including ballistic tools powered by GeoBallistics. In the broader optics and aiming-systems field, the company gained additional visibility in 2022 when it was selected to produce and deliver fire-control systems for the U.S. Army’s Next Generation Squad Weapons program. That mix of sporting optics and advanced shooting systems helps explain the brand’s strong reputation in practical field equipment.

Main Features

• Magnification: 8.00 x
• Objective lens diameter: 28.00 mm
• Prism type: Roof - Schmidt/Pechan
• Lens coating: Fully Multicoated
• Field of view: 108.50 m/1000m
• Field of view (angular): 6.20 °
• Exit pupil: 3.50 mm
• Eye relief: 18.00 mm
• Close focus: 1.80 m
• Focusing system: Central
• Diopter adjustment: Right eye-piece
• Interpupillary distance: 55.00 mm - 72.00 mm
• Gas filling: Argon
• Waterproof: Yes
• Fogproof: Yes
• Length: 117.00 mm
• Width: 114.00 mm
• Weight: 397.00 g
• Body type: Single hinge

In the Box

• Rainguard Eyepiece Cover
• Tethered Objective Lens Covers
• Neck Strap
• Soft Side Case Strap
• Soft Side Carry Case
• Lens Cloth