Buy Binoculars
Buying your first pair of binoculars can feel overwhelming. This guide walks you through what to look for - including magnification, lens size, and comfort - so you can choose the right binoculars for birdwatching.
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Magnification
What is it?
Magnification is your binoculars’ ability to zoom in and make distant birds appear closer.
It’s the first number in binocular specifications — for example, in 8x42 or 10x50. This number tells you how many times the image is magnified compared to what you see with the naked eye.
A lower number (e.g. 8x42) gives you less zoom but a wider field of view. You’ll see more of the scene, which helps when watching fast-moving or flying birds.
A higher number (e.g. 10x50) gives you more zoom but a narrower field of view. You’ll see less of the scene but can focus in on specific details.
What to choose?
Anything around 8x magnification or higher will help you see more birds clearly.
Some birdwatchers prefer 8x because it’s lighter and easier to hold steady.
Others go for 10x to zoom in further, even if the binoculars are a bit heavier.
Object Lens Diameter
What is it?
This is the size of the lens at the front of the binoculars, measured in millimetres, and it affects how much light enters your binoculars.
It’s the second number in the spec e.g. 8x42 means a 42mm objective lens.
A smaller number (e.g. 42mm) means the image may be slightly darker, especially in low light, but the binoculars are lighter to carry.
A larger number (e.g. 50mm) means a brighter image in dim conditions, like early morning or dusk, but the binoculars will be heavier.
What to choose?
You can’t go wrong with anything over 42mm.
Many birders start with 42 mm for a good balance of weight and brightness.
Others choose 50 mm for better low-light performance and don’t mind the extra weight.
Other things to look out for
Budget – binoculars range widely in price, and you don’t need to spend a fortune. A mid-range pair will give you great quality without the premium price tag.
Comfort – look for binoculars with a comfortable grip and adjustable eyecups, especially if you wear glasses.
Waterproof and fogproof – useful if you’re birdwatching in changing weather or near water.
Lens coating – look for terms like fully multi-coated or anti-reflective to ensure a bright, clear image.
Brand reputation – reliable brands include Nocs, Canon, Celestron, Leica, Nikon, Swarovski and Zeiss. These are known for producing binoculars that last.
Do a test
Once you’ve narrowed down your preferences, head to a binoculars shop if you can. Try out a few different pairs - this will help you decide whether you prefer something compact and light, or don’t mind a heavier model with more zoom or brightness.
Podcast episodes
Weekend Birder podcast is here to help you buy and use binoculars.