Buyer's guide for general use binoculars

Your ideal binoculars

Use our binocular buying guide to help you choose the best binoculars for your needs. Whether you're birdwatching, whale spotting, hunting, travelling, watching sport or simply enjoying the outdoors, understanding the basics will help you choose the right pair with confidence.

A perfect starting point for beginners asking "What are the best binoculars for me?", this guide explains key binocular features including magnification, lens size, field of view, waterproofing and image stabilisation.

If you're looking to buy binoculars for a specific activity such as bird watching, hunting or astronomy, you may wish to check out one of our more specific buyers guides.

What will you use your binoculars for?

Before choosing binoculars, it's worth thinking about how you'll use them most often. Different activities can benefit from different binocular specifications.

• Birdwatching: Usually 8x42 or 10x42 binoculars.
• Wildlife observation: Often 8x42, 10x42 or stabilised binoculars.
• Hunting: Commonly 8x42, 10x42 or higher magnification stabilised binoculars.
• Marine use: Often 7x50 marine binoculars or stabilised binoculars.
• Travel: Compact 8x25 or 10x25 binoculars.
• Sport and concerts: Compact binoculars or stabilised binoculars for larger venues.
• General outdoor use: 8x42 binoculars are often considered the most versatile option.

Once you've identified your main use, it becomes much easier to choose the right magnification and lens size.

Understanding binocular specifications

Every set of binoculars has its own specifications. The specification of a pair of binoculars is usually shown as two numbers, such as 8x42 or 10x50. These numbers tell you the magnification power and the objective lens diameter.

The first number is the magnification power of the binoculars. The second number is the diameter of the objective lenses, measured in millimetres. Together, these two numbers have a major impact on how the binoculars perform in different situations.

Example: Binoculars with a specification of 8x42

Magnification power

In this example, the binoculars have a magnification power of 8x. This means that an object will appear 8 times closer than it would to the unaided eye. For example, if you view an animal standing 50 metres away through 8x42 binoculars, it will appear significantly closer.

Higher magnification binoculars allow you to see further and pick out more detail, but they can also be harder to hold steady and usually have a narrower field of view.

Some binoculars offer variable magnification, often called zoom binoculars. For example, binoculars with a specification of 8-12x42 can be adjusted to magnify images between 8 and 12 times depending on the requirements of the user.

Objective lens diameter

The second number refers to the binoculars' objective lens diameter. The objective lenses are the lenses at the front of the binoculars, furthest away from your eyes and closest to what you are looking at. In an 8x42 binocular, the objective lenses are 42mm in diameter.

The diameter of the objective lenses largely determines how much light the binoculars can gather. Larger objective lenses generally produce a brighter image, particularly in low light conditions such as dawn, dusk or shaded environments.

When choosing a pair of binoculars, it's important to consider how you plan to use them, as this will affect what specification of binoculars will suit you best.

What's the ideal binocular magnification?

One of the most common mistakes people make when buying binoculars is focusing solely on magnification. While higher magnification can bring distant subjects closer, it also reduces field of view and makes image shake more noticeable.

For most people, binoculars with 7x, 8x or 10x magnification provide the best balance between image detail, field of view and ease of use.

Higher magnification binoculars can be useful for long-range observation, but they traditionally required a tripod to achieve the best viewing experience. This is one reason why 8x42 and 10x42 binoculars have remained so popular for decades.

Why are stabilised binoculars becoming so popular?

For decades, binocular users had to choose between portability and magnification. If you wanted to see more detail at longer distances, you often needed a tripod to keep the image steady.

Modern stabilised binoculars have changed this by using advanced image stabilisation technology to reduce hand shake. This allows users to comfortably enjoy higher magnifications while remaining completely mobile.

As a result, stabilised binoculars have become increasingly popular for wildlife observation, hunting, boating, whale watching, sport and long-range viewing.

While traditional binoculars remain the most popular option for many users, stabilised binoculars offer an exciting alternative for those wanting maximum detail without carrying additional equipment.

What's the ideal binocular lens size?

The larger the objective lens diameter of your binoculars, the more light they are able to gather. More light generally means a brighter image, particularly in low light conditions.

However, bigger is not always better. Larger objective lenses make binoculars bigger and heavier, which may not be ideal if you need something compact for travel, hiking or casual use.

Binoculars typically come in several common sizes:

• Compact binoculars - usually 20mm to 28mm objective lenses
• Mid-sized binoculars - usually around 30mm to 36mm objective lenses
• Full-sized binoculars - usually around 40mm to 42mm objective lenses
• Large binoculars - usually 50mm objective lenses and above

Where will I be using my binoculars?

If you plan on taking your binoculars hiking, travelling or keeping them handy at a moment's notice, very large binoculars may be too heavy or bulky. Compact or mid-sized binoculars are often a better choice for these applications.

If you're mainly planning to use your binoculars from home, a vehicle, a boat, a hide or another fixed location, size and weight may not be as important. In these cases, full-sized or larger binoculars can provide a brighter, more comfortable image.

What conditions will I be using my binoculars in?

If you plan on using your binoculars early in the morning, at dusk or in darker conditions, larger objective lenses can be useful. In these situations, 42mm or 50mm objective lenses are often recommended, although they will add size and weight.

For daytime use, travel, general sightseeing and casual observation, compact and mid-sized binoculars can still perform extremely well, especially when they use quality glass and coatings.

Many binocular users find that 8x42 or 10x42 binoculars offer the right balance between magnification, brightness, size and ease of use.

Most popular binocular specifications

• 8x25: Travel, sightseeing and compact everyday use.
• 10x25: Travel, sport and general outdoor use.
• 8x42: The classic all-round binocular for birdwatching, wildlife observation and general use.
• 10x42: Popular for hunting, wildlife observation and long-range viewing.
• 12x42 and above: Best suited to long-distance observation and often paired with image stabilisation.
• 7x50: The traditional marine and boating binocular specification.

What additional features do I need?

Waterproof and durable - If you're planning on using your binoculars outdoors, waterproof construction is highly recommended. This helps protect your binoculars from unexpected rain, splashes and damp conditions. Durable rubber armour is also useful, as it helps protect the binoculars from bumps and improves grip.

Fog proofing - Fog proof binoculars are sealed and usually nitrogen purged to help prevent internal fogging when temperatures or humidity levels change. This is especially useful for hunting, marine use, winter sports and general outdoor observation.

Eye relief - Eye relief is important if you wear glasses or sunglasses while using your binoculars. Longer eye relief allows you to see the full image more comfortably without needing to press your eyes close to the eyepieces.

Field of view - Field of view refers to how much of the scene you can see through the binoculars at once. A wider field of view is useful for birdwatching, sport, wildlife observation and any situation where you need to locate or follow moving subjects.

Image stabilisation - Image stabilisation helps reduce hand shake and can make higher magnification binoculars much easier to use. Stabilised binoculars are particularly useful for long-range observation, boating, whale watching, live events and situations where carrying a tripod is impractical.

Conclusion

If you're unsure where to start, an 8x42 binocular remains one of the best all-round choices available. It offers an excellent balance of magnification, brightness, field of view and portability, making it suitable for a wide variety of activities.

For users wanting to see more detail at longer distances without carrying a tripod, stabilised binoculars are becoming an increasingly popular alternative. Their ability to reduce image shake can provide a noticeably steadier and more enjoyable viewing experience.

Ultimately, the best binoculars for you will depend on how and where you plan to use them. By understanding magnification, lens size and the key features available, you'll be able to choose a binocular that provides years of enjoyment.