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 $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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AUD $2,790.00Backorder: Contact US for ETA
The dG is the first long-range optical device to allow you to identify and document your sightings and share them with other people.
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AUD $4,890.00Backorder: Contact US for ETA
Accuracy can also mean versatility. The EL Range 8x42 binoculars are ideal for numerous viewing opportunities right up to twilight. Their expansive field of view and large exit pupil ensure optimum comfort during observation.
NOTE: FRR Forehead Rest is NOT included. This is a separate item.
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AUD $5,260.00Backorder: Contact US for ETA
Uncompromising observation. The EL Range 10x42 shows precise details when viewing over long distances thanks to its 10x magnification.
Phils Review : "These ranging and tracking binoculars are the perfect kit for the serious hunter. I love the fact that the binocular can not only give you a distance but then direct you to target by connecting to your mobile phone with maps or by direction arrows in the optics. WOW."
NOTE: FRR Forehead Rest is NOT included. This is a separate item.
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AUD $1,190.00Backorder: Contact US for ETA
Big on quality – small in size: The Swarovski 8 x 25 CL Pocket Green binocular is a folding compact binocular with exceptional optical quality. It offers maximum viewing comfort, even for long periods, and fits perfectly in your hand.
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AUD $1,190.00Backorder: Contact US for ETA
Big on quality – small in size: The CL 8 x 25 Pocket Black - Mountain is a folding compact binocular with exceptional optical quality.
It offers maximum viewing comfort, even for long periods, and fits perfectly in your hand.
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AUD $1,190.00Backorder: Contact US for ETA
Big on quality – small in size: The CL Pocket is a folding compact binocular with exceptional optical quality. It offers maximum viewing comfort, even for long periods, and fits perfectly in your hand.
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AUD $1,270.00Backorder: Contact US for ETA
Big on quality – small in size: The Swarovski 10 x 25 CL Pocket is a folding compact binocular with exceptional optical quality. It offers maximum viewing comfort, even for long periods, and fits perfectly in your hand.
Learn More -
AUD $1,270.00Backorder: Contact US for ETA
Big on quality – small in size: The Swarovski CL Pocket 10 x 25 Mountain binoculars are a folding compact binocular with exceptional optical quality. It offers maximum viewing comfort, even for long periods, and fits perfectly in your hand.
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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)
