Vortex Diamondback HD 8x42 vs Vortex Diamondback HD 8x32
Quick take: The Vortex Diamondback HD 8x32 costs $10 less; the Vortex Diamondback HD 8x32 has a wider field of view (426 vs 393 ft @ 1000 yds); the Vortex Diamondback HD 8x42 gathers more light with a larger 42mm objective.
Field of view, to scale
Top-down view · drawn to true scale — no exaggeration
Which one to buy
Ten dollars apart and from the same family, these two split on one thing: how much light you need against how much weight you'll carry. Glass, prism coatings, 5 ft close focus and the VIP warranty are shared. The 8x32 is 15.9 oz with a 426 ft field; the 8x42 is 21.8 oz with a 393 ft field and a 5.25mm exit pupil against 4.0mm.
That exit pupil is the 8x42's case. Owners of the 8x32 say it trails its 42mm siblings in low light, and testers point to the 8x42 for dawn, dusk and forest shade. The 8x42 is also kinder to glasses, with 17mm of eye relief against 16mm, and 8x32 testers found theirs tight in practice, with thin eyecups that felt cheap and a hinge that wouldn't close enough for close-set eyes. The 8x42 ships with the GlassPak harness.
The 8x32 wins on carry and view. Testers found it the brightest of the small compacts they compared, measured close focus as near as 3.8 ft and called its handling a joy, and its field is wider than the 8x42's. Owners of both report the same budget-glass trade-offs, color fringing on high-contrast subjects and a focus wheel that can run stiff or gritty. For travel, long hikes and daylight birding, the 8x32 is the one you'll carry more often; for early starts, shaded woods or glasses, the 8x42 is worth its extra ounces.
Vortex Diamondback HD 8x42
For birders and hunters who head out at first light, glass in shade or wear glasses: the bigger exit pupil and roomier eye relief earn the extra weight.
Vortex Diamondback HD 8x32
The better travel and hiking binocular: lighter, with a wider 426 ft field, for anyone who mostly looks in daylight.
| Spec | Vortex Diamondback HD 8x42 | Vortex Diamondback HD 8x32 |
|---|---|---|
| Approx. price | ~$230 | ~$220 |
| Use case | Birding | Birding |
| Magnification | 8x | 8x |
| Objective | 42mm | 32mm |
| Exit pupil | 5.25mm | 4.0mm |
| Field of view | 393 ft @ 1000 yds | 426 ft @ 1000 yds |
| Eye relief | 17mm | 16mm |
| Close focus | 5 ft | 5 ft |
| Prism | Roof | Roof |
| Glass | HD | HD |
| Coating | Fully Multi-Coated | Fully Multi-Coated |
| Weight | 21.8 oz | 15.9 oz |
| Dimensions | 5.4 x 5.1 in | 4.4 x 5.0 in |
| Warranty | Lifetime (VIP) | Lifetime (VIP) |
Feature comparison
Vortex Diamondback HD 8x42
- ✗ED Glass
- ✓Phase-Corrected
- ✓Dielectric Coating
- ✓Waterproof
- ✓Fogproof
- ✗Image Stabilized
- ✓Tripod Adaptable
- ✗Magnesium Body
- ✗Locking Diopter
Vortex Diamondback HD 8x32
- ✗ED Glass
- ✓Phase-Corrected
- ✓Dielectric Coating
- ✓Waterproof
- ✓Fogproof
- ✗Image Stabilized
- ✓Tripod Adaptable
- ✗Magnesium Body
- ✗Locking Diopter
What birders say
Vortex Diamondback HD 8x42
- ✓The default 'first real binocular' recommendation on birding and hunting forums - owners consistently say it punches at the level of glass costing $100 more
- ✓Unusually wide 393-foot field of view for the class, noticeably wider than a Nikon Monarch M5 - beginners find birds faster and lose them less
- ✓Bright, contrasty center-field image; in side-by-sides owners call it a smidge brighter and more immersive than the Monarch M5
- ✓Vortex VIP warranty is unlimited, transferable, and no-receipt - forum lore is full of stories of trashed pairs replaced free, no questions asked
- ✓Included GlassPak chest harness is genuinely good and something competitors don't bundle at this price
- ✓Comfortable 17mm eye relief with solid click-stop eyecups works well for eyeglass wearers
- ✓Grippy rubber armor and IPX7-rated waterproof/fogproof build shrugs off rain, dust, and truck-cab abuse
- ✓Close focus around 5 feet makes it a legitimate butterfly and dragonfly binocular too
- ✗Edges soften noticeably in the outer 15% of the field - fine for centered subjects, but panning landscapes shows the blur
- ✗Visible chromatic aberration on high-contrast subjects like birds against bright sky
- ✗Shallow depth of focus means more focus-wheel fiddling than some rivals - a recurring gripe in Monarch comparisons
- ✗Focus wheel feel varies by unit; some owners report gritty or unevenly tensioned wheels out of the box
- ✗The center hinge is stiff enough that adjusting interpupillary distance 'puts up a fight'
- ✗Low-light performance trails the Viper HD by a clear margin - dawn and dusk glassing is where the price gap shows
- ✗At about 21.8 ounces it's not heavy, and slightly lighter than a Monarch M5 8x42 (22.2 oz)
- ✗Some glare and veiling flare when the sun is just outside the field of view
Vortex Diamondback HD 8x32
- ✓Expert birding reviewers rated it a Solid Choice and found it the brightest image among the smallest compacts they tested - unusual praise at $220
- ✓Wide 8.1-degree field of view (426 ft) that independent lab measurement confirmed actually exceeds the spec slightly at 8.19 degrees
- ✓Outstanding close focus - listed at 5 ft, measured as close as 3.8 ft in testing - making it a legitimate butterfly and dragonfly binocular
- ✓Very crisp center of field with little distortion when panning or focusing - testers resolved fine bill detail on warblers with it
- ✓Light and handy at a measured 442g with genuinely good ergonomics: quality rubber armor, thumb indents, and a shape lab reviewers called stylish and a joy to handle
- ✓Dielectric phase-corrected prisms and hydrophobic ArmorTek exterior coatings - features that used to be $400+ territory
- ✓Vortex's VIP lifetime warranty is truly no-questions - one owner who emailed about a minor optical artifact was offered a replacement without hesitation
- ✓Wide, well-padded neck strap and a solid accessory kit for a budget binocular
- ✗No ED glass despite the 'HD' branding - lab reviewers note the optics are decent but without fireworks, and chromatic aberration is visible in high-contrast scenes
- ✗The focus wheel on tested units was slightly stiff
- ✗Thin, flimsy-feeling eyecups - on one professionally tested pair the outer eyecup covering spun freely, making adjustment awkward and less comfortable against the face
- ✗Testers found them hard to use with glasses - the 16mm eye relief is tighter in practice than on paper
- ✗Not suitable for people with close-set eyes - multiple testers couldn't close the hinge far enough to merge the image
- ✗Nighttime and streetlight viewing shows halos, spikes, and ghost reflections - the interior tubes are gray rather than deeply blackened, and baffling is mediocre
- ✗The diopter ring rotates the outer eyepiece element rather than an internal one - functional but a budget touch
- ✗Low-light performance trails 42mm siblings and ED-glass competitors like the Nikon Monarch M7 tier above it
Vortex Diamondback HD 8x42 vs Vortex Diamondback HD 8x32: common questions
Is the Diamondback HD 8x32 bright enough, or do I need the 8x42?▾
In daylight the 8x32 is plenty, and testers found it the brightest of the small compacts they compared. At dawn, dusk and in forest shade its 4.0mm exit pupil falls behind the 8x42's 5.25mm, and owners of the 8x32 say low-light performance is where it trails its 42mm siblings.
Which Diamondback HD is better with glasses, the 8x42 or the 8x32?▾
The 8x42. It has 17mm of eye relief against 16mm, and its owners say most glasses wearers see the full field with the eyecups down. Testers of the 8x32 found it hard to use with glasses and called its thin eyecups a weak point.
Does the Diamondback HD 8x32 have a wider view than the 8x42?▾
Yes, 426 ft against 393 ft at 1000 yards, and a lab measurement found the 8x32's field slightly exceeds its spec. Owners of the 8x42 already rate its field as wide for the class, so both are easy to find birds with.