Binoculars & Monoculars
Binoculars & Monoculars
Choosing the right binoculars or monoculars can feel overwhelming—there are hundreds of options across wildly different price points and use cases. At Sirius Optics, our team of astronomers and nature lovers are here to cut through the confusion and help you find the perfect pair for your needs and budget.
Not sure where to start? Visit our Brisbane showroom, try a few pairs side by side, or give us a call. And if you buy online and the binoculars aren't quite right, we offer a 30-day return policy for store credit.
Understanding Binocular Specs: What Do the Numbers Mean?
You'll see binoculars described with numbers like 8x42, 10x50, or 10-30x50. Here's what they mean:
- The first number is the magnification. An 8x42 binocular magnifies 8 times; a 10-30x50 is a zoom binocular ranging from 10x to 30x.
- The second number is the diameter of the front (objective) lens in millimetres. A larger objective lens gathers more light, giving you a brighter image — especially useful in low light conditions like dawn, dusk, or stargazing.
The trade-off: larger lenses mean larger, heavier binoculars. For handheld use, 42mm is a popular sweet spot between brightness and portability.
What Else Should You Consider?
Beyond magnification and lens size, a few other features are worth knowing:
- Waterproofing & fogproofing
Most modern binoculars are sealed against moisture and nitrogen-purged to prevent internal fogging, making them suitable for outdoor use in all conditions.
- Size & weight
Binoculars with 50mm+ objective lenses can become tiring to hold for extended periods. If you plan to use them for birdwatching or hiking, compact or mid-size models are often more comfortable.
- Specialist features
Marine binoculars may include built-in compasses and floating designs; astronomy binoculars prioritise large apertures for maximum light gathering; image-stabilised models reduce shake at higher magnifications.
What About Monoculars?
Think of a monocular as a compact, single-eye alternative to binoculars — lighter, more pocketable, and surprisingly capable. Some people call them "half a binocular", but there's nothing half-hearted about them. Modern monoculars can include night vision technology, smartphone adapters, and even automatic bird and wildlife identification — making them a versatile choice for travellers, hikers, and wildlife enthusiasts.
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AUD $4,360.00Backorder: Contact US for ETA
EL 12x50 binoculars provide even more details thanks to their 12x magnification. Their ideal weight balance means that they fit perfectly in your hand – brilliant for lengthy periods of observation over long distances.
NOTE: The EL model binoculars do not come with a field carry bag. The field bag has to be purchased separately.
Phils Review: "These binos are the business if you want that extra punch to glass the hills or laying in cover from a distance to track flighty nervous wildlife. The optics are awesome on dusk when animals are most active and yield beautiful crisp detail."
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AUD $2,770.00Backorder: Contact US for ETA
THE IMPRESSIVE, MULTIPURPOSE BINOCULARS
EL 42 binoculars combine size, weight, and optical performance to give the perfect product.
They are multipurpose and reliable, suitable for use both during the day and at twilight.
Nature lovers appreciate the unique close-up setting of 1.5 m and the rapid, precise focusing mechanism.
NOTE: The EL model binoculars do not come with a field carry bag. The field bag has to be purchased separately.
Phils Review: "The EL 8.5 x 42 binoculars are my absolute favourite Swarovski binocular. This is the perfect bino for birdwatching in close cover. I love the pin sharp optics and rich crisp colour. The pop out centre focus button seals the deal with its simplicity and makes this bino a joy to use."
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AUD $3,250.00Backorder: Contact US for ETA
EL 10x42 binoculars capture the crucial details with their 10x magnification.
Ideal for observing in open paddock and over long distances.
NOTE: The EL model binoculars do not come with a field carry bag. The field bag has to be purchased separately.
Phils Review: "I love using these binocualrs for general field work and have found them to be most useful when I'm working out on the farm and looking for those pesky feral animals 500 meters away down in the paddock."
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AUD $1,490.00Backorder: Contact US for ETA
The traditional form of observation. The Habicht binoculars are the classic optical system that has been tried and tested and continually developed for generations. Their light-alloy housing and extremely sturdy yet lightweight design make them particularly suitable for taking on excursions.
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AUD $1,820.00Backorder: Contact US for ETA
The traditional form of observation. The Habicht binoculars are the classic optical system that has been tried and tested and continually developed for generations. Their light-alloy housing and extremely sturdy yet lightweight design make them particularly suitable for taking on excursions.
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AUD $1,580.00Backorder: Contact US for ETA
The traditional form of observation. The Habicht binoculars are the classic optical system that has been tried and tested and continually developed for generations. Their light-alloy housing and extremely sturdy yet lightweight design make them particularly suitable for taking on excursions.
Learn More -
AUD $1,780.00Backorder: Contact US for ETA
The traditional form of observation. The Habicht binoculars are the classic optical system that has been tried and tested and continually developed for generations. Their light-alloy housing and extremely sturdy yet lightweight design make them particularly suitable for taking on excursions.
Learn More -
AUD $1,950.00Backorder: Contact US for ETA
The traditional form of observation. The Habicht binoculars are the classic optical system that has been tried and tested and continually developed for generations. Their light-alloy housing and extremely sturdy yet lightweight design make them particularly suitable for taking on excursions.
Learn More -
AUD $49.99Backorder Available
- High quality binoculars at an affordable / economical price
- Multi-coated optics increase light transmission resulting in brighter and sharper images with high contrast levels
- Stylish rubber covered aluminum body protects from rough handling
- Ergonomic thumb indents and finger ridges for extra non-slip comfort and ease of use
- Water resistant
- Soft carrying case
- Binocular straps
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AUD $4,190.00Backorder: Contact US for ETA
NL Pure - the revolutionary binoculars with the largest field of view to date and barely perceptible edges, without compromising on ergonomics and handling. In other words: Best optics, packed in the smallest possible size. The NL Pure thus provides unprecedented nature experiences.
NOTE: FRP Forehead Rest is NOT included. This is a separate item.
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Why buy from Sirius Optics
Queensland's largest telescope showroom and warehouse
Run by astronomers and nature lovers, not sales people
Expert advice and lessons
Secure checkout with multiple payment options
30 day returns (T&Cs apply)
