Best Binoculars for Hiking in 2023

Best Binoculars for Hiking

You are often immersed in an environment rich in wildlife and sometimes magnificent panoramas during hikes. How frustrating not to be able to admire a bird you hear in the distance or waterfalls far from your route. However, finding the right pair of binoculars for hiking can be confusing as the world of binoculars has witnessed remarkable advancements with cutting-edge technologies.

After examining more than twenty models, we selected the top 10 best binoculars for hiking. Each of our recommendations has been scrutinized in a practical way. So you’re guaranteed to see fine details from afar and enjoy an overall satisfying viewing experience on your hikes or nature excursions.

Best Binoculars for Hiking in 2023

Whether you’re an intrepid explorer seeking to conquer new peaks or a nature lover yearning to witness the subtle nuances of the wilderness up close, this list is your compass…

1. Nikon Aculon A211 10-22×50

1. Nikon Aculon A211 10 22×50


  • Weight: 961 g
  • Prism type: Porro prism
  • Lens coating: multi-coated coating
  • Actual/perceived field of view at 1000 m: 3.8°/ 66 at 1000 m
  • Objective lens diameter: 50 mm
  • Exit diameter of pupil: 5 mm
  • Magnification (digital zoom): 10 x
  • Minimum focusing distance:  15 m
  • Optical zoom: 10 to 22x
  • Twilight index: 22.4
  • Light intensity: 25
  • Waterproof: no
  • Adaptable tripod: yes


  • Compatible with a wide range of applications
  • Many user-friendly features
  • Good manufacturing quality
  • Smooth central focus knob
  • Turn-and-slide Multi-click rubber eyecups


  • Relatively heavy
  • Large

Nikon is famous for its well-designed products and the Aculon A211 10-22×50 binoculars carry on that tradition with their great balance between affordability and high quality. It is designed with durable rubber armor to ensure optimal protection in drops and harsh environments.

Another reason this model takes the very first step in our top 10 is: it is suitable for a wide range of applications. Whether for hiking or for bird and wildlife watching, Aculon A211 10-22×50 binoculars are easy enough to pack for the day although they aren’t the lightest on the market.

Nikon has notably provided them with rubber eyecups which keep the binoculars positioned in the right place and promote comfortable wearing over an extended period of time. We were satisfied with its ergonomic design. This device is built with multi-coated glass lenses with 50mm diameter for a wide and bright field of view.

Nikon Aculon A211 10 22×50

These high-quality optics from Nikon are associated with a 5 mm exit pupil. So with these hardware choices, you can use the Aculon A211 10-22x50s to see distant objects even in low light or at night. Also, their rubberized coating offers a strong grip.

These binoculars include a smoothly rotating focus knob to allow you to quickly and accurately find a clear view of your subject. A convenient zoom control knob at your fingertips allows for swift and effortless adjustment, ranging from 10x to 22x power.

However, long-distance images may appear wavy.  Also, this model has average weather resistance, so you should be careful when using it in certain environments.

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2. Olympus 8-16×40 S Binoculars

2. Olympus 8 16×40 S Binoculars


  • Weight: 795g
  • Prism type: Porro prism
  • Lens treatment: Coated aspherical lenses
  • Actual/perceived field of view at 1000m: Wide angle: 5° – 3.4°/ 87-59m at 1000m
  • Lens diameter of objective: 40 mm
  • Exit pupil diameter: 5 – 2.5 mm
  • Magnification (digital zoom): 8 x
  • Minimum focusing distance: 10 m
  • Optical zoom: 8 – 16x
  • Twilight factor: 25.3
  • Light intensity: 6.25
  • Waterproof: no
  • Adaptable tripod: yes


  • Portable and lightweight
  • Construction with solid rubber
  • Aspherical and multicoated lenses
  • Wide field of vision
  • Very good value for the money


  • Heavyweight

In terms of value for money, it’s hard to find a better option on the market than the Olympus 8-16×40 S. These binoculars have been available for a while now but continue to impress with their affordable price. They offer higher magnification (8 – 16x) and have a Porro Prism design, which combined with its aspherical lenses provides a clear image even in low light conditions.

It features an excellent build quality in line with Olympus binoculars. This model includes all basic features, plus high-end coatings and interchangeable lenses, resulting in minimal distortion and aberrations. So you can be sure to enjoy an enjoyable viewing experience overall.

We particularly like the Olympus 8-16×40 S for its superb zoom capabilities and its massive field of view of 143 meters at 1000 meters (one of the best on the market). Also, this model offers a close focus of 10 meters. These features ensure that you will get a glimpse of nature at its best.

The good news is that you have at your disposal a series of tools that promote clear and detailed visualization in different conditions. The large central rotary knob allows rapid adjustments of the focus during use. Likewise, these binoculars include a built-in diopter correction adjuster for manual focus adjustment for each eye, depending on your sight needs.

Other features notable features are it is safe and very comfortable to use. With strong rubber armor, they offer resistance to potential shocks while hiking, and feature a textured grip to ensure a firm grip. Finally, the Olympus 8-16×40 S is compatible with most standard tripods.

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3. Bushnell 150142 Binoculars 10×42 H2o

3. Bushnell 150142 Binoculars 10×42 H2o


  • Weight: 709g
  • Prism type: Bak-4 roof prism
  • Lens coating: Multi-coated anti-reflective coating
  • Actual/perceived field of view at 1000m: 5.9°/ 115 at 1000m
  • Objective lens diameter:  42mm
  • Diameter pupil exit distance:  4.2mm
  • Magnification (digital zoom):  10
  • Minimum focusing distance:  3.6 m
  • Optical zoom: 10 x
  • Twilight factor:  20.5
  • Light intensity: 17.64
  • Waterproof: yes
  • Suitable for tripod: yes


  • An anti-reflective multi-coated lens system
  • High-transmission BAK4 prism
  • 100% waterproof and fog-proof design
  • Special anti-shock rubber armor
  • Satisfactory optical performance, including at dusk
  • Comfortable and easy to handle


  • Resolution and contrast could have been better with phase correction coated prisms
  • Doesn’t come with strap

The Bushnell H2O series is known for offering good optical performance and this model is no exception. For an affordable price, the Bushnell H2o 10×42 provides sharp images with high contrast and a satisfying viewing experience at dusk. Above all, their waterproof and solid design is resistant to the most difficult conditions of use.

This model is designed with a non-slip rubber that can absorb shock while ensuring a secure grip and handling. The O-ring sealed and nitrogen purged mean they are fog-free and condensation-free moisture and mold.

The robustness of their design gives them adequate protection if they accidentally fall from heights that are not too high. These are combined with the Bak-4 roof prism-type design, which allows good light transmission and guarantees satisfactory twilight performance.

Despite the relative heaviness – a weight of 709 g on the scale, the Bushnell H2o binocular is comfortable to handle and use. This is largely made possible by their textured rubber exterior which makes it easy to grip whether you have wet hands or are wearing gloves.

As for the performance itself, it’s on the whole satisfactory although phase-correction coated primes would have resulted in improved resolution and contrast. That said, it’s not fair to complain about it given the affordable price and the choices of optical components operated by Bushnell: large objective lens diameter (42 mm), glass lenses multi-layered…

Bushnell H2O Lenses

Twisted eyecups provide longer eye relief for wearers of glasses or contact lenses, as well as. the good placement of controls is another feature that makes the Bushnell 150 142 10×42 h2o user-friendly.

This model features 10x magnification and a 102m field of view at a distance of 1000m so distant subjects appear close enough. If you need a final argument to definitely choose these binoculars, you’ll be happy to know that they come with a strap and a carrying case.

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4. Nikon Sportstar EX 10×25

4. Nikon Sportstar EX 10×25


  • Weight: 300 g
  • Prism type: roof prism
  • Lens coating: multi-coated coating
  • Actual/perceived field of view at 1000 m: 6.5°/ 114 at 1000 m
  • Objective lens diameter: 25 mm
  • Exit diameter of pupil:  2.5mm
  • Magnification (digital zoom): 10x
  • Minimum focusing distance:  3.5m
  • Optical zoom: 10x
  • Twilight factor: 15.8
  • Light intensity: 6.25
  • Waterproof: yes
  • Suitable for tripod: no


  • Compact and foldable
  • Waterproof up to 2 meters of water
  • Brighter, sharper field of vision
  • Comfortable to handle and use


  • No tripod adapter
  • Poor eyecaps

If you’re looking for hiking binoculars that are comfortable, durable, and offer both a wide field of view and close focusing, the Nikon Sportstar EX 10×25 might be all you need. We highly recommend this model primarily for its versatility, making it well-suited for use in both indoor and outdoor settings.

This model is usable whatever the weather conditions. It can withstand immersion in 2 meters of water, for up to 5 minutes. Their anti-fog design with the use of nitrogen and O-ring seals prevents fog from forming inside the lens and dirt/dust from accumulating there.

Sportstar EX 10×25 binoculars adopt a compact and lightweight format, which makes them suitable for everyday use. After use, you can fold them up and put them in your pocket for quick and easy transport. So you do not necessarily need to provide a special case for these binoculars.

 Nikon has truly excelled in ensuring that the Sportstar EX provides a remarkably comfortable user experience. For this purpose, they are covered with rubber armor to give you the firmest possible grip even in bad weather. Also, their central focus wheel has a studied positioning for quick use and smooth adjustments.

Apart from water sports, these foldable binoculars are designed for nature observation, camping, theater or concerts. They bring subjects closer to you thanks to the 10x magnification. The 25mm objective lens diameter ensures efficient observation while remaining modest in size.

The multi-coated lens treatment lets in more light to provide a brighter and sharper field of vision. However, there is a slight creaking noise when pressure is applied to the center housing that encases the hinges.

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5. Bushnell Powerview 10×42

5. Bushnell Powerview 10×42


  • Weight: 670g
  • Prism type: Bak-7 glass roof prism
  • Lens coating: Multi-coated coating
  • Actual/perceived field of view at 1000m: 5.7°/ 98 at 1000m
  • Objective lens diameter: 42mm
  • Pupil exit diameter: 4.2 mm
  • Magnification (digital zoom): 8
  • Minimum focusing distance: 7 m
  • Optical zoom: 10x
  • Twilight index: 17.64
  • Light intensity:  17.64
  • Waterproof: no
  • Suitable for tripod: yes


  • Shock-absorbing, ergonomic and non-slip solid rubber body
  • Adjustable diopter
  • Quick focus adjustment
  • Contemporary styling
  • Reasonable price for such quality


  • It may not be suitable if you need to observe at a very long distance (more than 87m)
  • Not truly waterproof

If you’re looking for a mid-range pair of hiking binoculars with high magnification capabilities, don’t pass up the Bushnell Powerview 10×42. For an affordable price, they offer everything you need for low-light vision and the comfort of use.

Their characteristics and functions have been studied to lend themselves to a wide variety of uses: observation of birds, wildlife, landscapes, or even the ocean, sports activities, shows, etc. 

It has a 42mm objective diameter, which allows for excellent daylight and low light viewing. Their multi-coated lenses sport a special coating to reduce light reflection and deliver bright images. We also appreciate the updated eye cup design, which offers enhanced comfort compared to the previous rubber flip-down style.

It should also be mentioned that the Bushnell Powerview 10×42 includes multi-coated BaK 7 prisms, which provide a clear view, as well as excellent saturation and contrast. With these, you won’t miss any object. A focus knob in the center of the body — in a convenient location you’ll find without even looking — is also provided to allow quick focus adjustment until you can see your subjects perfectly in focus.

The folding blinkers and the reasonable weight (670g) are other elements that make the use of the Bushnell Powerview 10×42 user-friendly. Additionally, these have an adaptable tripod base so you can mount the binoculars on a tripod to give your arms a rest.

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6. Olympus 8×40 DPS-I Binoculars

6. Olympus 8×40 DPS I Binoculars


  • Weight: 710 g
  • Prism type: Porro prism
  • Lens coating: single-layer coating
  • Actual/perceived field of view at 1000 m: 8.2°/ 143 at 1000 m
  • Objective lens diameter: 40 mm
  • Exit diameter of pupil: 5 mm
  • Magnification (digital zoom):  8
  • Minimum focusing distance: 4 m
  • Optical zoom: 8x
  • Twilight factor: 17.9
  • Light intensity: 25
  • Waterproof: no
  • Adaptable tripod: yes


  • Easy to use and hold with excellent design
  • Coated lenses and prisms ensure a clear field of view
  • UV protection
  • Built-in diopter correction adjuster
  • Large, easy-to-use center focus knob
  • Durable body


  • Slightly heavyweight

Whether you plan to do bird watching, hiking, or other outdoor activities, a pair of mid-range binoculars with decent features and functionality will do the trick. With a 65-degree field of view and 8x magnification, the Olympus 8×40 DPS-I might just be all you need to enjoy a satisfying viewing experience in different situations.

With a 40mm objective diameter and large (5mm) exit pupils, these binoculars are the ideal choice for hiking. They show appreciable versatility, thanks to their optical system that uses aspherical lenses to ensure a clear field of vision. You will get an authentic view with high brightness, contrast and image quality.

The Olympus 8×40 DPS-I is appreciated above all for its robustness. Like the other binoculars from Olympus, they exude high quality and truly give the impression of being made to last over time. That said, the rough construction of this pair of binoculars comes at a price: weight of 710g.

The brand has however worked to ensure that the relative heaviness of the Olympus 8×40 DPS-I is not disabling. Not only are these binoculars adaptable to a tripod for hands-free use, but they feature a rubber coating that ensures a secure and comfortable grip.

Olympus 8×40 DPS I

Other interesting features are worth highlighting. These binoculars are notably equipped with a large central focus knob that ensures easy focus adjustment in seconds. Likewise, they feature UV protection and a built-in diopter correction adjuster, which can be used to manually adjust the field of view for each eye.

However, it tends to lose focus slightly when zoomed in or out to the maximum extent, necessitating a refocusing adjustment. Also, the exterior of the anchor points is in good condition, but the slot appears unfinished and has a rough texture.

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7. Bushnell Binoculars 10×25 H20

7. Bushnell Binoculars 10×25 H20


  • Weight: 290g
  • Prism type: Bak-4 glass roof prism
  • Lens coating: Multi-coated coating
  • Actual/perceived field of view at 1000m: 6.6°/ 114 at 1000m
  • Objective lens diameter: 25 mm
  • Pupil exit diameter:  2.5 mm
  • Magnification (digital zoom): 10
  • Minimum focusing distance: 4.6 m
  • Optical zoom: 10x
  • Twilight factor: 15.8
  • Light intensity: 6.25
  • Waterproof: not
  • Adaptable tripod: yes


  • Textured rubber frame
  • Soft ridges to maintain grip
  • Compact size with a double-hinged bridge
  • Nitrogen filled for fogproof and waterproof performance
  • Cheap price


  • The cover is a little too small and no cap for the lenses

If you’re looking for affordable binoculars for hiking that will give you crisp, clear views even in adverse weather conditions, the Bushnell 10×25 H20 should be among your options. Their waterproof and fog-proof design ensures honorable optical performance to enhance your adventures on the water or outdoors.

They sport a protective rubber coating that provides a good gripping surface that will prevent your hands from slipping even in wet and cold conditions. Plus, their interiors are purged with nitrogen to rid the body of any moisture, and the O-rings are sealed to keep moisture out. So you don’t have to worry about observing in high humidity or getting caught in the rain.

We recommend these binoculars not only for their excellent weather protection but also for their ability to provide sharp, clear views. Thanks to the multi-layer anti-reflective coating, the lenses have been coated to reduce light loss and improve contrast. Their Bak-4 roof prisms provide improved clarity and brightness.

Moreover, the Bushnell 10×25 H20 has an objective diameter of 25 mm and a magnification of 10x. As for their apparent viewing angle, it is 6.6° while the eye relief is 12 mm.

Finally, these binoculars include twisted eyecups that guarantee a comfortable viewing distance even when wearing glasses or contact lenses. Overall, these compact and lightweight binoculars are valuable hiking and travel partners.

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8. Olympus 10×21 DPC-I Sporty

8. Olympus 10×21 DPC I Sporty


  • Weight:  170 g
  • Prism type: Porro prism
  • Lens coating: single-layer coating
  • Actual/perceived field of view at 1000 m: 5°/ 87 at 1000 m
  • Objective lens diameter: 21 mm
  • Pupil exit diameter:  2.1 mm
  • Magnification (digital zoom): 10
  • Minimum focusing distance: 2.2 m
  • Optical zoom: 10x
  • Twilight factor: 14.5
  • Light intensity: 4.41
  • Waterproof: no
  • Adaptable tripod: no


  • Compact and lightweight design
  • Easy to store and transport
  • Ultraviolet (UV) Protection
  • Fully anti-reflective coated optics
  • Case, neck strap and lens caps included


  • Basic features
  • Classic design

Olympus 10×21 DPC-I might be all you need for your next hiking or just plain adventures to watch sporting events of all kinds. These binoculars are designed to a compact and ultra-lightweight (170 g only). You will therefore have no reason to leave them at home, as they are discreet and slip easily into a pocket.

However, we don’t recommend this model just for its excellent portability, its sporty design is especially appreciated to make you see things the way they are meant to be seen.

This model is made from special optical materials that provide protection against harmful UV rays. They combine coated aspherical lenses and Porro prisms to ensure detailed observations of distant subjects. The 21mm objective lenses feature an anti-reflective coating to reduce glare and improve light transmission, contrast and color fidelity.

It has a strong 10x magnifying power, but you have the option to personalize the viewing experience thanks to the integrated dioptic correction which allows you to adjust the sharpness. The focus is adjusted quickly and easily via a large central low-profile wheel.

While it may not offer the advanced features found in deluxe binoculars, it still provides excellent value for your money. The order includes a case, neck strap and lens caps.

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9. Vortex Optics Diamondback HD

9. Vortex Optics Diamondback HD


  • Weight: 272 g
  • Prism type: HD Roof Prism
  • Lens treatment: Fully multi-coated coating
  • Actual/perceived field of view at 1000 m: 87 at 1000 m
  • Objective lens diameter: 32 mm
  • Exit diameter of pupil: NC
  • Magnification (digital zoom): 10
  • Minimum focusing distance: NC
  • Optical zoom: 10x
  • Twilight index: NC
  • Light intensity: NC
  • Waterproof: yes
  • Adaptable tripod: yes


  • Good quality images with the ability to adjust sharpness
  • Compact and lightweight
  • Very robust design
  • Excellent value for the money
  • Very good grip and feeling of comfort
  • Strong magnifying power


  • A little stiff to adjust

If you are on a tight budget and looking for the perfect binoculars for nature and wildlife viewing, the Vortex Optics Diamondback HD is one of the best options available to you.

These compact and lightweight binoculars use large (32mm) lenses and state-of-the-art optical coatings to deliver super-bright images, so you can get the most out of your mountain treks. Its field of vision of 87 m at a distance of 1000 m ensures the observation of a large area of ​​the terrain.

The combination of high-quality HD glass roof prisms and lenses with fully multi-coated treatment guarantees optimum brightness while the high magnification power makes objects appear 10 times closer. However, there’s a slight chromatic aberration in strong backlighting, but it’s really quite minimal.

As you will have understood, these binoculars offer more than decent optical performance for their price. You even have the possibility of personalizing the viewing experience by adjusting the sharpness of the image using the central focusing ring and the one dedicated to diopter adjustment.

If you wear glasses, you will be reassured to know that this is not incompatible with the use of the Diamondback HD: they indeed include retractable rubber eyecups that you just have to fold down to be able to stick your glasses to the lenses without risk of damaging them.

Moreover, this device is very comfortable to use. Thanks to their fully multi-coating, which offers excellent grip to ensure good resistance against shocks. Finally, this model comes with a neck strap and a polyester cover: these accessories facilitate their transport and protect them from shocks and dust.

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10. Bushnell PowerView 12×25 Binoculars

10. Bushnell PowerView 12×25 Binoculars


  • Weight: 320g
  • Prism type: Bak-7 glass roof prism
  • Lens treatment: All surfaces
  • Actual/perceived field of view at 1000m: 4.6°/ 80 at 1000m
  • Objective lens diameter: 25 mm
  • Pupil exit diameter: 2.1 mm
  • Magnification (digital zoom): 10
  • Minimum focusing distance: 7.6 m
  • Optical zoom: 12x
  • Twilight factor:  17.3
  • Light intensity: 4.33
  • Waterproof: not
  • Adaptable tripod: no


  • Compact and lightweight design
  • Excellent value
  • Strong magnifying power
  • Good choice for beginners or children


  • Improvable stability

Finally, in our top 10 list of the best binoculars for hiking, we have the Bushnell PowerView 12×25. If budget is a primary consideration for you, the PowerView 12×25 is an option you should seriously consider. Apart from their affordable price, we recommend these binoculars as they might be just the thing for beginners or kids.

This model features a compact and lightweight design and offers powerful magnification (12x), as well as a wide field of view (4.6°/ 80 to 1000 m). These specifications make it a partner of choice for observing wildlife or nature but also for fully enjoying concerts and other sporting events.

Like their counterparts in the popular Bushnell Powerview series, this model uses fully coated optics to deliver bright and vivid images. Their 25 mm diameter objective lenses are indeed coated, which promotes excellent light transmission. The 12x optical zoom function reveals sharp details in distant objects.

They show signs of durability with their rubber grip armor that absorbs shock while providing a firm grip. Drops from moderate heights should therefore not get the better of these binoculars. They are also small and light enough to slip into a jacket pocket.

However, the brightness is a little low but enough for occasional use such as hiking or camping.

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Best Hiking Binoculars Buyer’s Guide

To choose a pair of binoculars suitable for hiking, follow our dedicated guide!

Choose According to Your Use

For hiking, versatile binoculars will be recommended and a large field will be appreciable. To observe subjects in detail, it will be necessary to favor binoculars equipped with excellent optics, good magnification and fast focusing.

Avoid going over 10x magnification which could make your binoculars unstable in use. To observe birds at dusk, choose a model with a twilight index close to or greater than 20. A rubber coating will be ideal against falls as well as rubber protection for the eyes.

There are compact and easy-to-learn models specially designed for children. Models equipped with 8x magnification and a 21mm lens will suffice to introduce them to observation.

Type of Prism and the Quality of the Lenses

Binoculars work with a prism system. These prisms allow the user to observe what the binoculars are capturing without inverting the image. There are two types of prism:

  • Porro prism: this fairly old design is found on high-magnification binoculars marketed at attractive prices. On the other hand, this design makes it less solid and luminous because the path of the light will be less direct.
  • Roof prism: this is a newer design that offers the advantage of a more direct and therefore brighter light path. Another advantage, the dimensions of the binoculars will be reduced while the reliability will be in tune with excellent sealing.

The type of glass used for the binoculars will have a big impact on the quality of the images. There are binoculars fitted with BK-7 boron lenses and BaK-4 barium lenses. The majority of binocular models are equipped with BK-7 glasses which are less expensive for a satisfactory image quality result. On the other hand, BaK-4 lenses will mean better performance in terms of image quality at the expense of a higher price.

Finally, to guarantee a good contrast and good sharpness of the images, the manufacturers apply the glasses of treatments on the glasses of the binoculars: fully multicoated, multicoated, fully coated and coated. We recommend you choose models with a multicoated or fully multicoated coating and avoid binoculars with uncoated lenses.


On all pairs of binoculars, there are indications that actually correspond to the performance of the devices. We can find different binoculars, highlighting technical sheets where we will find mentions of 10 x 50 or 12 x 30. The first number of this technical information will indicate the magnification coefficient of the binoculars, which we could assimilate to “zoom”.

A pair of 10 x 50 binoculars will allow you to view a subject or an object 10 times closer. On the other hand, a large magnification coefficient will not always be practical because it needs to use a tripod to avoid the effects of tremors. This will interfere with the use of binoculars in some cases.

An average magnification coefficient of 7x will be sufficient for the vast majority of outdoor uses. If you like to see in detail the subjects you observe, a 10x magnification will be a good choice. For versatile use, there are binoculars with a variable magnification coefficient ranging from 15x to 45x.

The Lens Diameter

The diameter of the objective lens is identifiable by the second number which follows the magnification on the datasheet. To be more precise, it is the diameter of the front lens of the binoculars expressed in millimeters. This data will define the quality of the image obtained. They work the same way as camera lenses: light enters through the lens. The more light there is, the clearer the image will be.

This value will be useful to know according to your uses: if you plan to hike in areas that are not conducive to good light, large lenses will be useful. On the other hand, this large-diameter lens will be at the expense of the weight and size of the binoculars. In other words, choosing binoculars equipped with large lenses will not necessarily be a good idea if you plan to use your binoculars in broad daylight.

For daytime hiking, a lens with a diameter between 32 and 42 millimeters will be ideal. For nocturnal observations, you can favor larger objectives than those indicated for daytime observation.

The Diameter of the Eye Circle (Exit Pupil)

The eye circle corresponds to the small circle of light that can be observed at the back of the binoculars. To obtain this data, simply divide the diameter of the lens by the magnification coefficient. The diameter of the eye circle is generally between 2 and 7 millimeters. And to make the analogy with the field of photography, it corresponds in summary to the diaphragm.

The diameter of the eye circle will define the maximum amount of light that can be captured using the binoculars and will thus directly influence the comfort of observation. For optimal viewing comfort, it will be necessary that the diameter of the eye circle is close to the diameter of your pupil.

To put it simply, it is considered that the pupil of a child measures about 7mm, that of an adult under 50 about 6mm, and finally about 4mm in adults over 50.

Of course, the diameter of a pupil varies according to the quantity of light that it will receive. During the day, the pupil will be smaller than at nightfall. Thus, an adult under 50 without vision problems will have a pupil of 2 to 3.5mm during the day and 4 to 6mm in low light conditions, even reaching 7.3mm at nightfall.

Therefore, your age and the time of day /sun type of the environment where you will be using your binoculars will directly influence your choice of binoculars.

The Twilight Index and the Luminosity Index

These are two useful clues in determining what type of binoculars to use during the day or after dark.

To calculate the luminosity index, it will be necessary to calculate the square of the diameter of the exit pupil. For 10×50 binoculars, the luminosity index will be (50/10)², or 25. The higher the value obtained, the more the binoculars will be able to absorb light. Therefore, a pair of 5 x 50 binoculars will be able to absorb more light than 10 x 50 binoculars because its luminosity index will be higher (50 against 25).

The twilight index will allow you to define the effectiveness of the binoculars in low light conditions. This index is obtained by calculating the square root of the magnification coefficient multiplied by the diameter of the objective. Therefore, a pair of 8 x 42 binoculars will have a twilight index of 18.33.

The Field of Vision

The field of vision of a pair of binoculars corresponds to the width of the landscape that it will be possible to observe with the binoculars at a distance of 1000m. Usually, the field of vision is expressed in degrees or meters. This value will be directly related to the magnification coefficient. Indeed, the more you Zoom In, the more your field of vision will decrease accordingly.

To obtain the field of view, multiply the magnification coefficient by the value of the field width. If the result of the calculation is greater than 64, you will be facing a pair of wide-angle binoculars. For example, a pair of 10 x 50 binoculars with a field of view of 7° will benefit from a field of view of 70.

The Focusing System

Focusing consists of adjusting the sharpness of the image that you will observe in the binoculars to accurately visualize a subject. There are two types of focus on binoculars:

  • A central focus: we will do this using a wheel or a button.
  • Individual focus: often present on binocular models dedicated to water sports.

Additional Features

For difficult and humid weather conditions, make sure the device is waterproof. This also ensures the advantage of robust manufacturing, which prevents any entry of water and fog into the optics. In the same way, if you want to use your binoculars in a difficult situation or in a Hostile Environment, choose models that are coated with rubber. This can limit breakage in the event of falls or shocks.

Finally, you can pay attention to what is called Eye Relief, which is very important if you wear glasses. This criterion will ensure good comfort of use without having to separate you from your glasses: binoculars with an eye relief greater than 15mm will be ideal.

You should also know that not all manufacturers mention this information on the technical sheets of their models. In this case, be aware that there are still removable eyecups that can be adapted to binoculars, which will allow you to use the binoculars even with your glasses.

Note: Not all eyecups are standard, which means that from one manufacturer to another there will be different eyecups. High-end models are almost always equipped with this feature.

Preferred Brands and Manufacturers

There are binoculars at all prices depending on their characteristics and their quality of manufacture. For more specialized and top-of-the-range models, Nikon, Vortex Optics, Bushnell, Pentax or Steiner, which are in a way the tenors of optical devices, will therefore simply offer the best in the field.

The Prices

The price will obviously be determined by their technical data sheet. You will find the very first models for around $100 while the most high-end models may well exceed $1000, or even $1500 for professional models. For good quality entry-level products that give pride of place to excellent optical qualities and polished manufacturing, count around $500.


Which pair of binoculars should I choose if I wear glasses?

For users who wear glasses, make sure to choose models equipped with eye relief greater than 15mm. If this information is missing from the data sheet of the binoculars you are interested in, check that the manufacturer offers eyecups adaptable to the binoculars that will allow them to be used even with your glasses.

What is the ideal objective lens diameter for hiking binoculars?

Objective lens diameters of around 32mm to 42mm are popular choices for hiking binoculars. These sizes balance light-gathering ability with portability.

What quality of glass should be favored for binoculars?

There are two types of glasses for binoculars on the market: binoculars equipped with BK-7 boron glasses will be less expensive while offering very satisfactory image quality while BaK-4 barium glasses will be more expensive but will offer superior image quality. As for the coating of the lenses, we advise you to opt for a fully multicoated or multicoated coating while going your way for the untreated binoculars of a coating.

Are image-stabilized binoculars worth the investment for hiking?

Image-stabilized binoculars can be a valuable addition if you often find yourself in situations where a steady view is essential. They’re particularly useful for detailed observation or birdwatching.

Which binoculars are for versatile use?

For versatile use, choose a pair of compact and light binoculars, that have a satisfactory image quality for all uses. It will not be necessary to choose too high a magnification (which would be detrimental for use without a tripod) and with an easy focusing system. Very specialized pairs will not necessarily be the models to turn to at the risk of not being able to take them everywhere with you.


The gear you pack when hiking is as important as where you hike and having the right binoculars will allow you to make the most of your time outdoors. As we’ve explored, there are a multitude of options available, each serving different preferences and needs.

Whether you’re looking for binoculars that give you the best close-up views or a lighter solution that saves both your muscles and your bank account, now you have no risk of finding the pair of hiking binoculars that will exactly suit your needs. So get ready and start your next adventure, and see the world in a whole new way with the perfect pair of binoculars by your side.

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