Vortex Diamondback HD 8x28 Binocular

Key Features

• 8x magnification with compact 28mm objective lenses
• 6.2° field of view covering approx. 111m at 1,000m
• 18mm eye relief with adjustable eyecups
• Compact approx. 388g open-hinge construction
• Approx. 1.83m close focus
• HD Optical System for resolution and colour fidelity
• Fully multi-coated lenses with dielectric prism coatings
• Argon purged, waterproof, fogproof and shockproof

Vortex Diamondback HD 8x28 Binocular Summary

This is the wider-viewing option in the smallest Diamondback HD size class. Its compact dimensions suit travel and walking, while 8x magnification provides a broader view than the 10x28 for locating and following wildlife.

At 18mm, eye relief is also the longest in the entire Diamondback HD family, adding another useful distinction to this compact configuration. 

In More Detail

HD Optics and Prism Coatings

The HD Optical System uses selected glass elements to reduce chromatic aberration while maintaining resolution, colour fidelity, edge-to-edge sharpness and light transmission. Fully multi-coated lenses use anti-reflective coatings across air-to-glass surfaces to increase light transmission and support clarity in lower light.

Dielectric Prism Coatings use multiple layers to maintain brightness and colour accuracy, while Phase Correction coatings improve resolution and contrast through the roof-prism system.

Open-Hinge Construction and Outdoor Protection

True Open Hinge construction reduces overall weight and bulk while providing space around the barrels for handling. Rubber armour adds a non-slip exterior and additional protection.

Exposed lens surfaces feature ArmorTek, an ultra-hard coating that helps protect against scratches, oil and dirt. Argon-gas purging and O-ring sealing provide waterproof and fogproof performance, while the binoculars are also constructed for impact resistance.

Focus, Eyecups and Tripod Support

A central focus wheel adjusts both barrels simultaneously, while the diopter allows differences between the user’s eyes to be compensated for. Twist-adjustable eyecups accommodate viewing with or without glasses.

The binoculars are tripod adaptable with a compatible adapter.

8x28 for a Wider Compact View

Compared with the 10x28, the 8x28 increases field of view from approximately 91m to 111m at 1,000m and eye relief from 16mm to 18mm. Both share the same compact external dimensions and approximately 1.83m close-focus distance, with only 11g separating them in weight.

The choice therefore centres on viewing priorities rather than portability: the 8x28 provides a broader view and longer eye relief, while the 10x28 provides greater subject enlargement.

Which Diamondback HD binoculars should I choose?

Frequently asked questions

What is better compared to Crossfire HD?

Diamondback HD adds dielectric prism coatings, Phase Correction, ArmorTek exterior lens protection and argon purging. The family also offers far more size and magnification choices, making it particularly useful for buyers who want a more specific configuration or a step up in optical specification.

Should I consider Viper HD instead?

Viper HD moves further up the range with XR Plus anti-reflective coatings and a more premium optical specification. Diamondback HD remains the more accessible and considerably broader family, while Viper suits enthusiasts prepared to step up for additional optical refinement.

Specifications

What’s in the Box

• Vortex Diamondback HD 8x28 Binocular
• Rainguard Eyepiece Cover
• Tethered Objective Lens Covers
• Neck Strap
• Soft Side Case Strap
• Soft Side Carry Case
• Lens Cloth