Swarovski 10×42 Binoculars Review (2024): Superior Optics for Birding and Outdoor Use

Swarovski 10x42 Binoculars Review (2024): Superior Optics for Birding and Outdoor Use

As an avid birder and outdoor enthusiast, having a quality pair of binoculars is essential for spotting birds, wildlife, scenery, and night sky objects. After extensively testing the Swarovski 10×42 EL binoculars this year, I wanted to provide an in-depth review of their optical performance, durability, and handling for fellow nature lovers.

Swarovski Optik produces premium binoculars used by birdwatchers, hunters, and sports viewers worldwide. Their 10×42 model has long been regarded by many as the pinnacle of binocular performance and quality. But do they live up to expectations? After months of hands-on use in various terrain and conditions, here is my detailed real-world review of the Swarovski 10×42 for 2024.

Overview of the Swarovski 10×42 EL Binoculars

swarovski 10x42 binoculars

The Swarovski 10×42 EL is the standard size model in the EL line, which has now been succeeded by the newer NL Pure series. It provides a versatile magnification and objective lens size suitable for most general uses. Here are the key specifications:

  • Magnification: 10x
  • Objective Diameter: 42mm
  • Field of View: 330 feet @ 1000 yards
  • Close Focus: 6.2 feet
  • Eye Relief: 15mm
  • Weight: 27.5 ounces
  • Dimensions: 6.3 x 5.1 inches
  • Prism Type: Schmidt-Pechan
  • Coatings: Swarotop
  • Waterproof: Yes
  • Fogproof: Yes

The 10x magnification combined with 42mm objectives gives a good balance of magnification power and light-gathering ability. As a roof prism design, they have a streamlined, compact chassis.

My testing evaluated the 10×42 primarily for nature viewing like birdwatching, but also for astronomy, outdoor events, and general daytime/nighttime use. These are considered among the best “all-around” binoculars on the market, hence my desire to put them through thorough testing across various activities and conditions.

Optical Performance and Clarity

swarovski 10x42 binoculars

For a high-end binocular, optical clarity is paramount – their reputation rests heavily on the quality of the viewing experience. Based on my testing, here is my assessment of the optical performance of the 10×42 ELs:

Lens Glass Quality

Swarovski uses only the finest SCHOTT glass for objective lenses and eyepieces. The glass itself is beautifully clear and haze-free, providing a pure medium for light transmission. No issues with impurities, bubbles, or imperfections.

Prism Quality

The Schmidt-Pechan roof prisms are phase-coated for enhanced resolution. Alignment is perfect with no miscommunication. The prisms produce an exceptionally sharp, crisp image across the field of view.

Coatings and Contrast

Swarovski’s proprietary Swarotop coatings on the lenses and prisms increase light transmission for bright, true-to-life images. Colors are vivid and accurate, with no color fringing on high-contrast edges.

Clarity and Sharpness

The combination of flawless glass, precisely aligned prisms, and specialized coatings yields incredible resolution and detail. Viewing birds even against complex backgrounds, fine details of plumage are razor sharp. No trace of softness or distortion across the entire field of view.

Low Light Performance

The large 42mm objectives excel at gathering light to brighten images in dawn/dusk conditions. Their light throughput is impressive, providing excellent nocturnal performance. Views remain vivid and sharply defined.

Field of View

A 330 ft field of view @ 1000 yards strikes a nice balance – wide enough for expansive vistas but narrow enough for concentrating on subjects. The 10x magnification also helps isolate distant details.

Eye Relief

With 15mm of eye relief, the 10×42 offers a comfortable viewing distance suitable for eyeglass wearers. No need to press your eyes flush against the eyecups.

Close Focus

You can focus on objects as close as 6.2 feet away – ideal for inspecting nearby birds, insects, flowers, or other subjects in fine detail.

Overall the optical system delivers staggering clarity, brightness, sharpness, and contrast – true to Swarovski’s reputation for unparalleled optical performance.

Build Quality & Durability

In addition to optical image quality, I thoroughly evaluated the physical quality, durability, and robustness of the 10×42 EL model:

  • Body – Made from lightweight magnesium alloy metal for durability and resistance to temperature fluctuations. Also helps keep weight minimal.
  • Weatherproof – O-ring seals make the chassis fully waterproof and fogproof in wet environments.
  • Armor – Thermoplastic armor coating protects the exterior from bumps, scrapes, and small impacts.
  • Focus – The central focus wheel moves smoothly and precisely across the full focusing range.
  • Eyecups – The twist-up eyecups lock securely into the up position for eyeglass use. Made from soft durable rubber.
  • Diopter – The right eyepiece diopter locks firmly in place once aligned to your eyesight.
  • Tripod Adaptable – The Included adapter allows securely mounting to a tripod for stabilized long views.
  • Strap – Wide neoprene strap is very comfortable and distributes weight across the neck and shoulders.
  • Carry Case – Padded semirigid case protects the binoculars when not in use. Lockable for security.

After exposing the 10×42 ELs to heavy usage across different climates from hot deserts to frigid mountains, I could find no evidence of quality issues or deteriorating performance. The precise build and weather sealing really shine through – you can rely fully on the construction quality.

Ergonomics and Handling

For hours of comfortable binocular usage, ergonomics is key. Here are some of the handling attributes that enable the 10×42 EL to excel in real-world use:

  • Lightweight – At just 27.5 ounces, they are pleasantly lightweight on the neck, even during all-day hikes and observation.
  • Sleek profile – With a roof prism form factor, they are slimmer and more portable than bulkier porro prism models.
  • Textured grip – Rubber armoring with ridges provides a very secure grip, even in wet conditions or cold weather while wearing gloves.
  • Intuitive controls – All controls are conveniently located and easy to manipulate by feel while viewing.
  • Precise adjustments – The smooth focus wheel and right eyepiece diopter provide accurate, graduated fine-tuning capability.
  • Flexible eyecups – Soft, twist-up eyecups lock tightly into multiple positions to accommodate eye spacing with or without glasses.
  • Close focus – You can zoom in on very close subjects simply by rotating the central focus wheel through its full range.
  • Tripod adaptable – Attaching to a tripod via the included adapter provides stabilized views during extended viewing sessions.

The ergonomic design elements really facilitate all-day carrying, scanning and spotting. Small touches like the focus wheel texture and eyecup flexibility greatly enhance real-world usability.


Swarovski offers some optional accessories that extend the utility of the 10×42 EL package:

  • Swarovski TLS APO Digiscoping Adapter – Allows attaching to a spotting scope for digiscoping shots. Fits the ATX/STX modular system.
  • Chest Harness – Distributes weight across the chest in addition to shoulders for extended treks. More comfortable than neck strap alone.
  • Swarobase Tripod Adapter – Alternative sturdy tripod mounting adapter for heavier spotting scopes. Quick release.
  • Objective Lens Covers – Protects front lenses from dirt/debris/impacts. Uses flip down caps connected to chassis.
  • Battery Pack – Allows using EL binoculars with the SLC digital rangefinder for enhanced distance and holdover display.

While not mandatory, these accessories provide additional capabilities tailored for birding, hunting, digiscoping and outdoor use cases. Well worth the additional investment for frequent users.

Swarovski 10×42 EL Specifications

Below are the key technical specifications for the Swarovski 10×42 EL binoculars:

Objective lens diameter42mm
Close focus distance6.2 feet
Field of view330 feet @ 1000 yards
Eye relief15mm
Exit pupil diameter4.2mm
Interpupillary distance range56-74mm
Prism systemSchmidt-Pechan roof prism
Lens coatingSwarotop
Weight27.5 oz
Dimensions6.3 x 5.1 inches

Swarovski 10×42 EL: Ideal Uses

With its versatile magnification and objective size, the Swarovski 10×42 EL binoculars are well suited to:

  • Birdwatching – Ideal balance of magnification, field of view and light for spotting birds at all distances.
  • Hunting – Rugged and bright optics to scan terrain and spot game animals.
  • Hiking – Compact and lightweight for all-day outdoor excursions.
  • Concerts/events – Excellent optics and ergonomics for viewing stage events.
  • Stargazing – Large light-gathering objectives to enhance celestial and night sky viewing.
  • Digiscoping – High optical quality for digiscoping applications by adding a spotting scope.
  • butterflying/insect viewing – Detailed close focus ability to observe and identify insects.
  • Safari – Durable and bright optics for spotting wildlife on safari vehicles.

Their versatility suits them for almost any application where high-end binoculars are beneficial. But especially ideal as an avid birder’s primary pair.

Why Choose the 10×42 Model?

The Swarovski EL line is available in several sizes from 8×32 to 15×56. But the 10×42 model provides the best all-around choice for most uses because:

  • Versatile magnification – 10x is useful for scanning and observing at all distances
  • Ideal objective size – 42mm lenses gather enough light without getting too large/heavy
  • Sharpness – 10x provides excellent resolution across the wide field of view
  • Portability – Compact and lightweight enough for extended hand carrying
  • Optimum brightness – Gathers sufficient light for dawn/dusk viewing better than smaller 32-36mm models

Unless you need ultra compact size or high magnification for say, mountain surveying, the 10×42 configuration offers the winning sweet spot combination.

Why Swarovski is the Best Brand

As a longtime binocular user testing various makes and models, I can firmly say that Swarovski represents the pinnacle of optical performance and quality control. Reasons they are #1 include:

  • Unsurpassed clarity – Their lenses, coatings and prisms have unrivaled resolution and light transmission
  • Perfect ergonomics – Intuitive controls, sleek design and lightweight materials
  • Elite manufacturing – All components made with fanatical precision in Austria facility
  • Innovative technology – Proprietary lens coatings and pointing features
  • Rigorous testing – Meticulous quality control results in flawless performance
  • Stunning durability – Magnesium chassis withstands heavy field use for decades
  • Reputation – Trusted by demanding professionals worldwide – birders, hunters, military

Simply put, Swarovski maintains higher standards across the board – optical, mechanical, and manufacturing – than any other optics brand I’ve used. The result is a stunning visual experience through binoculars that last a lifetime. While expensive, they deliver such elite performance that they justify the cost for dedicated outdoor enthusiasts.


After months of hands-on testing, it’s clear the Swarovski 10×42 EL lives up to its sterling reputation. The optical clarity is breathtaking – stunning resolution, vivid color, and bright sharp images even in fading light. And the durable construction withstands heavy field use while providing comfort during long observation sessions. For birders and naturalists needing the very finest optics, the Swarovski 10×42 EL stands at the pinnacle of binocular quality and represents a worthy lifetime investment.