Vortex Optics Diamondback HD 8×28 Binoculars

(10 customer reviews)


Brand Vortex
Age Range (Description) Adult
Special Feature Fully multi-coated lenses
Objective Lens Diameter 42 Millimeters
Magnification Maximum 10 x

  • 10x magnification & 42mm objective lenses, these Diamondback HD binos are optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration and provide outstanding color fidelity, sharpness and light transmission
  • Fully multi-coated lenses increase light transmission with anti-reflective coatings on all air-to-glass surfaces. Dielectric coating provides bright, clear, color-accurate images. Armortek coating protects exterior lenses from scratches, oil and dirt
  • Adjustable eyecups twist up and down for comfortable viewing with or without eyeglasses. Center focus wheel adjusts the focus of both binocular barrels at the same time. Diopter (located on right Eyepiece) adjusts for differences in a user’s eyes.
  • Rubber armor provides a secure, non-slip grip, and durable external protection. Binoculars are tripod adaptable allowing use on a tripod or car window mount.
  • Argon purging and O-ring seals provide water and fog proof performance in all environments. Rugged construction withstands recoil and impact. Includes glass Pak harness.


The Diamondback HD delivers a rock-solid optic that optically punches high above its class.

From the brand

From the manufacturer




Diamondback HD Roof Prism Binoculars

The Diamondback HD smashes the scale of price vs performance, delivering a rock-solid optic that optically punches high above its class. The included GlassPak binocular harness keeps your glass close at hand, ready to deploy at a moment’s notice, all while providing protection and significantly more comfort than traditional neck straps.


Adjust Eyecups & IPD

The eyecups on the Diamondback HD binocular twist up and down so any viewer can see the full field and enjoy comfortable viewing—with or without eyeglasses. When not using eyeglasses or sunglasses, keep the eyecups fully extended. For the best viewing when wearing glasses, twist eyecups down.

The interpupillary distance (IPD) is the distance between the center of your left and right pupils. Match the IPD of your eyes and your binocular by rotating the barrels in or out until you see a single image free of shading.


Focus Your Binocular

Use the center focus and diopter to adjust for vision differences in each eye. Choose an object about 20 yards away and perform this two-step process:

  1. Close your right eye or cover the right objective lens with your hand. Look at the object with your left eye and adjust the center focus dial until the image is in focus.
  2. Close your left eye or cover the left objective lens with your hand and rotate the ring until the object is in focus.

neck strap

Neck Strap

Attach the padded neck strap in these three simple steps.

  1. Push a few inches of the strap through the strap attachment on the binocular.
  2. Hold the buckle and thread the end of the strap through the buckle.
  3. Adjust the overall length, then pull tight until strap secured within the buckle.


Lens Care

In order to enjoy the best views through your binocular, take time to regularly clean the exterior lenses:

  1. Remove any dust or grit from lenses before wiping. Use a can of pressurized air, soft camel hair brush, or an acrylic optical brush.
  2. Clear lenses of smudges, fingerprints, or eyelash oil. Fog the lenses with your own breath, then use a nonabrasive lens cloth to clean the lenses.


Eyecups & IPD


Focus Binoculars

neck strap

Neck Strap


Lens Care


GlassPak Binocular Harness

The GlassPak Binocular Harness stores and protects your binoculars while keeping them close at hand for quick deployment. Tethers attach to your binocular for added security against accidental drops while the fully adjustable straps create a comfortable fit. Follow these steps to attach the binocular tether straps.

  1. Thread the wide end of the binocular tether straps through the harness strap buckles.
  2. Size to fit by adjusting the one-size-fits-all harness strap.
  3. Thread the binocular tether straps through the strap attachments on binocular.
  4. Thread the binocular tether straps back through the tether strap buckles to secure.

Additional information

Weight 1.07 kg
Dimensions 8.82 × 7.2 × 4.45 cm
Package Weight

1.07 Kilograms

Item Dimensions LxWxH

9.2 x 7.8 x 5.1 inches

Item Weight

21.3 Ounces

Brand Name


Warranty Description

Unlimited unconditional lifetime warranty.

Model Name






Suggested Users


Number of Items


Part Number


Model Year




Included Components








Date First Available

July 11 2019


Vortex Optics

10 reviews for Vortex Optics Diamondback HD 8×28 Binoculars

  1. Rich in VA

    Great Set of Binos, 8×32 HDWhile I don’t do reviews normally, I had to say something about these binos. Great glass, lightweight, compact, well thought out lens covers that actually stay with the binos. These are the 8×32 HD. I debated on the 8×28’s, thinking they may be more ergonomic for me, but they are actually just a bit longer than the 32’s. Perfect for me, as I wear them almost constantly. Eye cups have positive positions, and the diopter ring is fairly stiff, as it should be. They may not be quite like my Zeiss 7×35’s, but they are darn close. My Zeiss and 3 other sets of 10×42’s are collecting dust………….My only other experience with smaller binos has been with my 2 pairs of Nikon Travelite. So, so pleased that the Vortex are nothing like those!! You will not be disappointed with these. Add in the Vortex warranty and you should be set for a long time.

  2. Harlan W. Erickson

    Amazing Clarity for the Price!I purchased the Vortex Optics Diamondback HD 10X28 Binoculars based solely on the reviews I read and am one hundred percent satisfied based upon the clarity, lack of shadowing and quick spotting. I have a pair of Leica Duovid 10X50 Binoculars I grew nervous of sharing at Washington Husky Football games due to a couple of near drops, so I knew I had to find an alternative, and boy, I’m glad I chose the Vortex. Currently, I have the Vortex Strike Eagle Scope on one of my rifles, so I knew the binoculars were going to be a great choice, especially with the warranty. I’ve also used the Binoculars in low light conditions while out on the water and am as equally amazed as I was at the football game. I can’t wait to take the glasses out for a little birdwatching.

  3. TheOldGuy

    These have to be the best binoculars for their size and cost!I got these for my wife because she wanted binos that offered a wide field of view and sharp image for birding and wildlife watching, replacing a compact older pair. The Diamonback 8x32s were only about two oz heavier and roughly the same physical dimensions, but the clarity difference is astonishing. I have been using a pair of Vortex Viper 10x42s for years but they’re a bit too big to take on a trip where flights impose a severe weight limit. After using my wife’s Diamonback 8x32s I ordered a pair for myself. The image clarity is almost indistinguishable from the 10x42s. Great buy!

  4. K Cla

    It is not just the GlassUpdate 9/3/22 I just bought my fourth pair of Vortex Binoculars. This time, a second pair of 8×32 DiamondBack HD. I know, I know I praised their binoculars below. But these 8x32s are as close to perfect as you can get for bird watching when you are in shrubbery and tree habitats. I have never had binoculars that cost a thoudsand dollars or even hundreds, but I cannot figure any way they could improve on these Vortex for this purpose.We have been bird watchers for decades and used primarily 10×42 binoculars in the mid-price range. I know I am a slow learner because I just this year decided to move from 10x to 8x, which apparently every birdwatcher knows is the better choice. To make up for my lapse, I have bought seven new binoculars in the last year. All have again been mid tier. I have purchased binoculars from Carson, Nikon and Vortex. The only differences is that they vary from 8X25 to 8X42.Over the years, all binoculars have improved dramatically and in the mid-tier have settled on a set characteristics. All the ones I bought this year have more or less the same specs.: BAK4 prism, water and fog proof, gas purged, fully multi coated lenses, spin-up eyepieces and center wheel focus. In addition, they all have more less comparable specs in other more esoteric categories like eye-relief, field of view and two or three other popular specs. Not surprisingly then, this means that when you are looking through all of these binoculars, they are excellent. What this means, if you handed me any one of these binoculars set up for me and focused at the right distance, I would not have a preferred choice.The big differences turn out to be almost always, mechanical. Some of the spin up eye pieces are loose and you have to mess with them. You almost always have to move the binoculars on the center hinge to make sure your eyes are lined up with the lenses and if the hinge is not really tight, you have to keep messing with that issue. You always have to spin the center wheel to focus and some have the problem of that process varies throughout the range. When you are bird watching, speed is almost more important than any other facet. Having to change a setting while you are out is always a major fail.The standout choice among the binoculars we bought this year are the Vortex. The model we got was the DiamondBack HD. We have them in 8X 25, 32, 42.The center hinge resists being jostled, and thus you never have to mess with that. There are two spin-up stops on the eyepieces and they lock at each setting. The focus wheel is smooth to turn throughout its range and, for us at least, has just the right tension.When I started my search to replace our old binoculars, it never entered my mind that the mechanical workings would have so much impact on what I thought made a good binocular.After several email exchanges with tech support at Vortex, I recognized the person I dealt with was truly tech support and not someone just answering email. Several of the technical specifications were reviewed with me as well as experiments suggested with the binoculars relative to eye-relief. The thoroughness of the guidance was unbelievable.My highest recommendation is any Vortex DiamondBack HD binocular you want to buy.

  5. thomas

    Light and powerful, a pleasure to use.Solidly built. High quality. Lovely to see with as they let a lot of light in.Comes with a harness (havent used) and a nice neck strap and rubbery end caps for protecting both ends while being quick to uncover.Very impressed with feel and quality. Sturdy yet relatively light. A pleasure to use (so far, mostly for watching those amazing hummingbirds). Much bang for your buck.

  6. Bob

    Excellent optics in a compact form and solid feelMy Nikon Aculon T51 10×24 binoculars weighed 7 oz, aluminum shell, fit in my backpacking shorts front pocket (Mountain Hardware), no lens covers, short eye relief, eye cups did not extend, in retrospect they were a strain to look through and the lens got dirty easily. Fortunately the Nikons broke, could no longer adjust right eye to focus anymore, but no impact, probably the plastic chassis cracked. That is one way to make a light pair of binoculars, no metal internals. In contrast, the Vortex Diamondbacks 10×28 have a magnesium chassis and weigh 13.5 oz, have good lens covers, good eye relief at 16 mm, 28 mm lens are a big step up from the Nikon’s 24 mm lens. The Diamondbacks are easy on the eyes with good color and clarity, very similar to my Brunton Eternas 15×50. They feel chunky compared to the Nikons, but also feel like they will not let me down in the middle of a backpacking trip in the Rockies. Lifetime whatever happens (by accident) warranty.

  7. jeremiah gardner

    Better than expectedI maybe a bit biased, as ive loved almost all the vortex products ive owned. But i was very impressed with the glass quality at this price point… generally i buy from the razor line, but needed a budget pair of binos for a hunt. These ticked to boxes. Great light gathering, far better than i could have imagined. Literally my only complaint is the cheap bino harness thats included. It works, it does its job. But its just cheap and not ergonomic. But for a free included item, im splitting hairs. Definitely recommend for budget glass.

  8. larry

    Very Nice Optics At A Decent PriceJust got these. I have tried several pair of compact binoculars with no luck, always seeing double. So I decided to try a nicer pair. The case is nice, come with a harness for the case and the neck strap for the binoculars. They feel very sturdy without being ridiculously heavy. The picture is incredibly clear. I have see a few reviews complaining about a split in the loop on one side of the eyepiece cover, but this is purposeful by the manufacturer, not a defect. Can’t wait to use them hunting!

  9. Shawn

    Solid binoculars at reasonable priceGenerally excellent binoculars. Well made, good adjustability, good covers, easy to hold. Nice even field without noticeable distortion. They are not light nor small – not the best thing to take on a long hike. Just a bit of chroma near the edges when fully zoomed, very acceptable for $250. I own telescopes and appreciate the issue of chromatic aberration and cost of minimizing it. At handheld 8×42 full zoom, these binocs’ edge chroma is nothing compared to the image bounce. If you are a hiker, the size/weight is the real drawback. I’m satisfied I didn’t fork out the $450 for the next better model.

  10. Amazon Customer

    Image qualityA made my homework, before deciding to buy a new binocular and for the price range these are the best overall!

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