Frequently Asked Questions about Monoculars

 

Our answers to frequently asked questions about monoculars will help you better understand how they work and how to select the best one for your needs. If you can’t find the answer to your question then check out our monocular buying guide or feel free to contact us – we’re always here to assist!

What is a monocular?

A monocular is a compact, single-lens optical device used to magnify distant objects. Essentially, it’s half a binocular, making it lighter, more portable, and easier to use with one hand. Monoculars are commonly used for birdwatching, hiking, and other outdoor activities where a lightweight, convenient optical tool is preferred.

What magnification do I need in a monocular?

Monoculars typically range in magnification from 5x to 12x, with some going even higher. The ideal magnification depends on your intended use:

• For general use or close-range activities like hiking, 6x to 8x magnification is usually sufficient.
• For birdwatching or hunting, 8x to 10x magnification provides a good balance between field of view and clarity at a distance.
• For long-distance viewing, a 12x or higher monocular might be required, but it can be harder to stabilise without using a tripod.

What is the difference between a monocular and binoculars?

The primary difference between a monocular and binoculars is that a monocular has just one lens and eyepiece, whereas binoculars have two. Monoculars are more compact, lightweight, and easy to carry, making them ideal for those who prioritise portability. However, binoculars offer a wider field of view and greater depth perception, making them better suited for activities where both eyes are needed to track moving objects, such as birdwatching.

Can I use a monocular for stargazing?

Yes, monoculars can be used for basic stargazing. However, due to their smaller size and lower magnification compared to telescopes, they are best suited for observing bright objects like the moon or nearby planets. For serious stargazing and deep-sky observation, a telescope or larger spotting scope would be a better choice.

What is a thermal monocular?

A thermal monocular detects heat signatures from objects and converts them into images, allowing you to see in complete darkness or obscured conditions such as smoke or fog. These are typically used for hunting, security, search and rescue operations, and wildlife observation. Thermal monoculars do not rely on light, so they can be used in environments where traditional optics, like night vision, may fail.

What is eye relief, and why does it matter in a monocular?

Eye relief is the distance from the eyepiece to your eye while still seeing the full field of view. Monoculars with longer eye relief (typically 15mm or more) are more comfortable to use, especially for those who wear glasses. Shorter eye relief may require you to hold the monocular closer to your eye, which can be uncomfortable for extended viewing.

Do I need a tripod for my monocular?

While monoculars are designed to be handheld, higher magnifications (above 10x) may result in shaky images, especially when focusing on distant objects. In these cases, using a small tripod can help stabilise the image and make it easier to see details. Some monoculars come with tripod mounting options, or you can use a standard tripod with an adapter.

How do I clean and maintain my monocular?

To keep your monocular in top condition, clean the lenses regularly using a soft, lint-free cloth or a specialised lens cleaning pen. Avoid using harsh chemicals or abrasive materials as they can damage the lens coatings. Store your monocular in a protective case to avoid dust buildup and accidental damage, especially if you’re using it in rough outdoor environments. We also offer cleaning kits with everything you need for lens maintenance.

What is the field of view (FOV) in a monocular?

The field of view (FOV) refers to the width of the area visible through the monocular at a given distance, typically measured in metres per 1000 metres or feet per 1000 yards. A wider field of view is useful for tracking moving objects or scanning a larger area, while a narrower field of view offers more detailed views at higher magnifications. Lower magnifications generally provide a wider FOV, while higher magnifications narrow it.

What is ED glass, and do I need it in a monocular?

ED (Extra-low Dispersion) glass is a high-quality optical material used to reduce chromatic aberration (colour fringing) and enhance image clarity and sharpness. ED glass is particularly beneficial in monoculars with higher magnifications, where optical distortions are more noticeable. If you’re using a monocular for birdwatching, wildlife observation, or any activity that requires crystal-clear images, ED glass is worth considering, although it may increase the cost of the monocular.

Can I use a monocular for photography?

Yes, many monoculars can be adapted for digiscoping, which is the practice of attaching a smartphone or camera to the monocular to take high-magnification photos or videos. Some monoculars come with built-in adapters, while others may require a separate digiscoping adapter. This is especially popular for wildlife photography or capturing distant landscapes. We offer a variety of digiscoping adapters for use with your monocular.

What’s the best monocular for birdwatching?

For birdwatching, a monocular with a magnification of 8x to 10x is ideal, as it provides a good balance between magnification and field of view. An objective lens size of around 30mm to 42mm is also recommended for brighter images, especially in low-light conditions. Additionally, look for a monocular with ED glass for sharper, more vibrant images, and make sure it’s waterproof and fog-proof if you’ll be using it in varying weather conditions.

Are waterproof monoculars worth it?

Yes, waterproof monoculars are highly recommended, especially if you plan to use your monocular outdoors in unpredictable weather. A waterproof monocular is sealed with O-rings to prevent water and moisture from entering the device, ensuring it remains functional even in wet conditions. Some models are also nitrogen-purged to prevent internal fogging caused by temperature changes, which is particularly useful when moving between different environments.