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Vortex Diamondback HD 8x42 Review

An excellent balance of price and all-around performance with particularly impressive brightness
vortex diamondback hd 8x42 binocular review
Credit: Abriah Wofford
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Price:  $270 List
Manufacturer:   Vortex
By Benjamin Hickok ⋅ Review Editor  ⋅  Dec 6, 2022
74
OVERALL
SCORE


RANKED
#6 of 16
  • Clarity - 45% 6.3
  • Brightness - 25% 8.1
  • Comfort - 10% 9.3
  • Field of View - 10% 8.0
  • Ease of Adjustment - 5% 6.4
  • Close Focus Range - 5% 9.0

Our Verdict

Whether you're an experienced bird watcher looking to maximize optical performance per dollar or are seeking your first pair of binoculars and want something high-quality that won't break the bank, we think the Vortex Diamondback HD 8x42 is a fantastic choice. Vortex really knocked it out of the park with their relatively low-cost yet crystal clear HD glass, and these binoculars are potentially the most attractive model to sport that game-changing glass. Combine that optical quality with the rugged yet comfortable-in-hand construction that Vortex is known for, and you have a pair of binoculars that is almost sure to please. These binoculars get our whole-hearted recommendation for almost anyone.
REASONS TO BUY
Excellent brightness
Great clarity
Comfortable
REASONS TO AVOID
Slightly heavy for backpacking
Editor's Note: This review of the Vortex Diamondback HD 8x42 was updated on December 7th, 2022.

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Overall Score Sort Icon
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Star Rating
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Pros Excellent brightness, great clarity, comfortableGood clarity and brightness, smooth focus knobRelatively good clarity, easy to focusGood clarity, easy to focusInexpensive, good clarity and brightness
Cons Slightly heavy for backpackingMediocre close focus range, mediocre field of viewfairly dim, rubber feels a bit stickyDimmer than competing modelsAverage construction quality, mediocre low-light performance
Bottom Line An excellent balance of price and all-around performance with particularly impressive brightnessThese perform well for the price, offering a smooth focus knob and decent brightness and clarityWhile these binoculars are good, many competitors in the same price range are betterA good pair of binoculars, but is easily outdone by other models in the same price rangeThe most budget-friendly option we've found that offers a good introduction to birdwatching
Rating Categories Vortex Diamondback... Nikon Monarch M5 8x42 Celestron TrailSeek... Athlon Midas G2 8x4... Celestron Nature DX...
Clarity (45%)
6.3
7.1
5.8
5.5
5.8
Brightness (25%)
8.1
8.6
8.1
8.1
7.7
Comfort (10%)
9.3
8.1
7.0
7.0
5.6
Field of View (10%)
8.0
6.0
9.0
9.0
7.0
Ease of Adjustment (5%)
6.4
8.0
8.0
8.0
7.0
Close Focus Range (5%)
9.0
7.0
8.0
8.0
8.0
Specs Vortex Diamondback... Nikon Monarch M5 8x42 Celestron TrailSeek... Athlon Midas G2 8x4... Celestron Nature DX...
Glass Type HD ED Bak-4 UHD Bak-4
Multi - Coating FMC FMC FMC XPL FMC
Magnification 8 8 8 8 8
Field of View (at 1000 yards) 393 ft 335 ft 426 ft 426 ft 388 ft
Close Focus 5.0 ft 8.2 ft 6.5 ft 6.5 ft 6.5 ft
Eye Relief 17 mm 19.5 mm 17.2 mm 17.2 mm 17.5 mm
Prism Roof Roof Roof Roof Roof
Waterproof/Fog Resistant? Yes Yes Yes Yes Yes
Measured Size (Length x Width) 5.7 x 5.1 in 5.7 x 5.1 in 5.5 x 4.9 in 5.7 x 5.2 in 5.3 x 4.9 in
Measured Weight 22 oz 22 oz 24 oz 23 oz 22 oz
Tripod Adapter Yes Yes Yes Yes Yes

Our Analysis and Test Results

The Vortex Diamondback HD 8x42 offers a near-perfect balance of optical performance and price, providing an experience that feels high-end yet falls squarely into the middle of the price range.

Performance Comparison


vortex diamondback hd 8x42 binocular review - the diamondback hd 8x42 provides impressive brightness and clarity...
The Diamondback HD 8x42 provides impressive brightness and clarity, all at a great price.
Credit: Max Mutter

Clarity


Outside of the uber-expensive, multi-thousand dollar binoculars we tested, the Vortex Diamondback HD 8x42 provided one of the clearest images we experienced throughout our testing.


In all of our tests, the Vortex Diamondback HD 8x42 consistently provided crystal clear images. Even in less-than-optimal lighting scenarios, we easily picked out small distinguishing features of finches and chickadees at upwards of 30 feet. Perhaps most importantly, that clarity stayed consistent from the center and nearly all the way out to the edges of the image. This produced a very immersive viewing experience that nearly conjured a David Attenborough voice-over every time we found a new critter to look at.

vortex diamondback hd 8x42 binocular review - these binos provided better clarity and brightness than all of the...
These binos provided better clarity and brightness than all of the other models in their price range during our testing.
Credit: Max Mutter

It's hard to come up with any downsides regarding the clarity of the Vortex Diamondback HD 8x42. However, we'd say that the very edges of the image lose a bit of clarity, but this never negatively impacted our viewing experience. Additionally, when looking towards the sun (and "towards" is the operative word here, we feel obligated to state the obvious that one should never look directly into the sun, especially when using binoculars), the lens produced yellow glares on the edges of the image slightly and a subtle haze. Here again, however, we never felt like that glare or haze significantly impacted our experience using these bins.

vortex diamondback hd 8x42 binocular review - the hd glass impressed us in every test.
The HD glass impressed us in every test.
Credit: Max Mutter

Brightness


This is where the Vortex Diamondback HD 8x42 truly shines (pun intended). These binoculars provided some of the most impressive brightness we've seen in this price range.


The Vortex Diamondback HD 8x42 are exceptionally good in low light too. When using them in the dawn and dusk hours, only the much more expensive pairs we tested provided brighter images. Even with the sun barely peeking over the horizon, we were able to make out the different subtle blue tones on a Steller's jay.

Perhaps more noticeable is the Vortex Diamondback's relative performance in medium light, such as midday in a shaded forest. When comparing these to the main top-rated binoculars in their price class, it felt like the images had the contrast cranked up a few notches in these situations. We were able to notice much more detail at these times thanks to the brighter image. Especially for bird watchers, this translates into a far more enjoyable experience.

Comfort


The Vortex Diamondback HD 8x42 are some of the most comfortable binoculars we've used.


One thing that can make a pair of bins so much more comfortable in hand are thumb indents. These little grooves in the bottom of the barrels can be the difference between an awkward beer-can-like grip and a comfortable, relaxed pinch. Perhaps there is some cost-prohibitive engineering hurdle to making these indents that we're unaware of because they seem to only be present in the most expensive binoculars on the market. The Vortex Diamondback HD 8x42 is a refreshing exception to this rule, as the bins sport ergonomic thumb grooves that make them very comfy to hold. That is complemented with a Goldilocks, not-too-sticky, not-too-slippery rubber coating that allows you to easily change hand position while focusing, yet provides a secure grip when needed.

vortex diamondback hd 8x42 binocular review - the thumb notches make for a very comfortable grip.
The thumb notches make for a very comfortable grip.
Credit: Max Mutter

Field of View


Offering a field of view of 346 feet at 1000 yards, the Vortex Diamondback HD 8x42 is less than the manufacturer specifications, but a bit better than the average of our test group. Some of its closest competitors provide slightly wider fields of view, but the difference is not stark enough to be noticed by any but the most attentive binocular users.


Ease of Adjustment


Everything about these binoculars feels easy to adjust. The focus knob moves freely yet has just enough resistance to easily stop it at the desired point. The diopter knob is slightly stiffer but still relatively easy to adjust when needed, and that extra stiffness makes it less likely you'll accidentally throw the diopter out of whack during normal use. Sure, some other models have slightly more creative diopter designs that are a bit more user-friendly, but overall these bins are just fine.


vortex diamondback hd 8x42 binocular review - the focus knob and diopter both proved easy to adjust.
The focus knob and diopter both proved easy to adjust.
Credit: Max Mutter

Close Focus Range


We measured an impressive close focus range of just 5.3 feet, one of the best in the field. Sure, some pairs provide a slightly closer focus range, but 5.3 feet means you'll probably be able to get a butterfly in focus if you're lucky enough to have one land on your shoe, and it's hard to ask for much more than that.


Accessories

We usually don't discuss binocular accessories because they're typically just the standard neck strap and carrying case, neither of which tend to differentiate one pair from another. However, the Vortex Diamondback HD 8x42 offers a unique dual shoulder strap for its carrying case that places the case securely on your chest/stomach (think a baby carrier but for binoculars). Two more straps connect the binoculars to the case, so you can remove the binoculars and use them while they remain attached to you.

vortex diamondback hd 8x42 binocular review - we weren't huge fans of the unique carrying case design.
We weren't huge fans of the unique carrying case design.
Credit: Max Mutter

This design is unique, and we like what they're going for. However, we personally did not find the design all that useful. The main advantage of a double shoulder strap for binoculars (often affectionately referred to as a binocular bra) is that you can sort of lean your hands against the straps as you peer through the bins. In fact, many of these straps are elastic for that very reason. Leaning gently against this tension can go a long way towards reducing handshake, resulting in a better image. However, the design of Vortex's case doesn't provide this advantage. Additionally, while it might be nice to have your binoculars pinned securely against you and in a protective case while bushwacking, we think all of the extra straps would be a hindrance in such a situation. Again, this is just our opinion, and for some, this may be exactly the accessory you've been pining for.

vortex diamondback hd 8x42 binocular review - the diamondback provides great performance and value, snagging one...
The Diamondback provides great performance and value, snagging one of our awards.
Credit: Max Mutter

Should You Buy the Vortex Diamondback HD 8x42?


The Vortex Diamondback offers incredible optical quality and brightness at a relatively reasonable price, making it one of the best values of all the many binoculars we've tested. We think most casual users will be thrilled with the quality of this pair — especially for the price.

What Other Binoculars Should You Consider?


We found few reasons to complain about these binoculars. We think they will please pretty much everyone, from those looking for their first pair of binoculars to those that have been geeking out about good optics for years. However, if you're on an even tighter budget, you might like the Celestron Nature DX 8x42.

Benjamin Hickok
 
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