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 $4,970.00In Stock
The NL Pure 10x52 are professional binoculars for demanding observation situations, particularly in difficult light conditions. With 10x magnification, they help you identify critical details while their field of view of 130 meters (142 yds) keeps everything in sight. This makes them particularly good for surveying open landscapes. The characteristic NL Pure wasp waist ensures the NL Pure 10x52 binoculars sit ergonomically in your hand. Maximum color fidelity and uncompromising image definition all the way to the edges are guaranteed by the proven SWAROVISION technology.
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AUD $399.00In Stock
The compact ZOOMR 10x34 with it's magnesium housing makes it nice and light to use, with a clear sharp focus.
Included smartphone adaptor makes it super easy to attach your smartphone. Quality case and easy click strap makes it handy to quickly pick up and use.
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AUD $2,369.00In Stock
German Precision Optics (GPO) are designed and engineered in Germany at the development and quality centre outside Munich.
GPO provides binoculars designed and tested to meet the needs of users from across the world for all their observation needs.
PASSION™ HD premium binoculars represent the height of design, function and performance they provide excellent light-transmission, edge-to-edge sharpness, close focus and brilliant colour reproduction.
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AUD $749.00In Stock
The PASSION™ ED 8x/10x 32mm binoculars represent the epitome of compactness and lightness, making them an excellent gateway to premium observation optics with an unmatched balance between quality and price. With a sleek, ergonomic design crafted from high-grade magnesium materials, they ensure durability and comfort.
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AUD $419.95In Stock
The saxon Safari ED 8x32 Binoculars deliver exceptional durability and comfort with their robust magnesium body and ergonomic design, ensuring prolonged use with ease. Equipped with phase and dielectric coatings, the advanced optics provide over 99% light transmission, offering vibrant colors and crystal-clear visuals for all viewing purposes. Learn More -
AUD $99.99In Stock
- Powerful 20x optical system for an image that is close-up to the action
- Large 50mm objective lenses with tremendous light gathering capability
- High-quality everyday binoculars that are easy to take along on all life’s adventures
- Multi-coated optics increase light transmission for brighter, sharper images with high contrast
- Rugged and water-resistant rubber covered aluminum body
- Ergonomic finger ridges for a non-slip grip
- Includes a soft carrying case and neck strap
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AUD $84.99
In Stock
- High-quality everyday binoculars that are easy to take along on all life’s adventures
- Multi-coated optics increase light transmission for brighter, sharper images with high contrast
- Rugged and water-resistant rubber covered aluminum body
- Ergonomic finger ridges for a non-slip grip
- Includes a soft carrying case and neck strap
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AUD $629.00In Stock
Elevate Your Outdoor Adventures with saxon Safari ED 10x42 Binoculars
Superior Visual PerformanceDurable and Ergonomic Design
Convenient Harness System
Advanced Optical Coatings
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AUD $599.00In Stock
The saxon Safari ED 8x42 Binoculars are tailored for avid adventurers, offering 8x magnification and a 42mm aperture for brilliant light capture and clear visuals, even in dim settings. Their lightweight yet sturdy magnesium construction ensures lasting durability and comfortable use over extended periods. The ergonomic design and included harness provide a secure grip and effortless portability during long explorations Learn More -
AUD $3,089.00In Stock
When speed is paramount, there’s no substitute for a range-finding binocular. The BX-4 Range HD TBR®/W 10x42mm fuses our DNA® engine and ballistics software with the optical performance diehard hunters and shooters demand.
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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)
