Vortex Diamondback HD 10x28

• HD optical system: Selected glass elements help reduce chromatic aberration, so fine detail stays cleaner and colors look more natural when scanning birds, game, or distant terrain.
• Compact 10x28 format: The 10x magnification gives useful reach in a small binocular that is easy to carry all day, making it well suited to travel, hiking, and fast-moving observation.
• Roof prism design with phase correction: The Schmidt/Pechan roof prism layout keeps the binocular slim, while phase-correction coatings improve contrast and resolution for a sharper image.
• Argon-purged waterproof construction: Argon filling and sealed construction help the binocular resist internal fogging and weather exposure, which matters when conditions change quickly outdoors.
• 16 mm eye relief with central focus: Generous eye relief supports comfortable viewing, including for many eyeglass wearers, and the central focusing system makes quick adjustments simple in the field.

About the Vortex Diamondback HD Series

Vortex Diamondback HD sits in the brand’s binocular lineup as a practical, field-oriented series built for users who want dependable optical performance without moving into heavier or more specialized models. The range includes compact 28 mm, mid-size 32 mm, and larger objective configurations, with magnifications running from 8x to 15x, so the series covers everything from everyday carry binoculars to higher-magnification observation tools.

A defining feature of the series is its HD optical system, which uses selected glass elements to reduce chromatic aberration and improve color fidelity. Combined with fully multi-coated lenses, dielectric prism coatings, and phase-correction coatings on the roof prisms, this gives Diamondback HD binoculars the kind of contrast, brightness, and edge sharpness that matter when identifying wildlife or picking detail out of mixed backgrounds. Vortex positions the series for hunting and wildlife observation, and the design reflects that purpose: compact roof-prism construction, straightforward controls, and weather-resistant build quality for regular outdoor use.

About the Vortex Diamondback HD 10x28

Vortex Diamondback HD 10x28 is the compact, higher-magnification option in the small-format end of the series. Its 10x magnification gives more reach than a typical casual-use compact binocular, which makes it useful when detail matters at distance, whether that means checking movement on a hillside, following wildlife across open ground, or carrying a lightweight binocular on travel and day hikes. The 28 mm objective lenses keep the body trim and easy to pack, while still providing enough optical performance for bright daylight and general outdoor use.

The optical system is built around fully multicoated lenses and a Schmidt/Pechan roof prism design, with phase-correction support that helps preserve contrast and image definition. In practice, that means a cleaner, more controlled image with less distracting color fringing around high-contrast edges. The 89.00 m/1000m field of view is balanced for a 10x compact, giving enough width for scanning while still emphasizing detail. A 16.00 mm eye relief helps maintain viewing comfort, and the central focus system allows fast adjustment when shifting between near and far subjects.

Mechanically, this model is designed for regular outdoor carry. At 451.00 g and only 117.00 mm long, it remains easy to keep in a pack or around the neck without becoming cumbersome. Argon filling, waterproofing, and fogproof construction support use in damp weather and changing temperatures, while the single-hinge body keeps the binocular simple, compact, and easy to handle.

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, with a product range focused on hunting, shooting, and outdoor optics.

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 technologies including GeoBallistics-powered ballistic tools, and it has expanded beyond consumer optics into military programs, including selection in 2022 to produce and deliver fire-control systems for the U.S. Army’s Next Generation Squad Weapons program. That mix of sporting and professional optics experience is directly relevant to products such as the Diamondback HD binocular line.

Main Features

• Magnification: 10.00 x
• Objective lens diameter: 28.00 mm
• Prism type: Roof - Schmidt/Pechan
• Field of view: 89.00 m/1000m
• Field of view (angular): 5.10 °
• Exit pupil: 2.80 mm
• Eye relief: 16.00 mm
• Close focus: 1.80 m
• Lens coating: Fully Multicoated
• Focusing system: Central
• Diopter adjustment: Right eye-piece
• Interpupillary distance: 55.00 mm - 72.00 mm
• Length: 117.00 mm
• Width: 114.00 mm
• Weight: 451.00 g
• Gas filling: Argon
• Body type: Single hinge
• Waterproof: Yes
• Fogproof: Yes

In the Box

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