Types of Binoculars

TYPES OF BINOOULARS ASTRONOMY Travel Porro Prism design Usually a Ideal sizes: 8x20, Roof Prism design Ideal Sizes: 8x56, 9x63, 15x70, 20x80. 10x25, 7x35 Astronomy Binoculars are usually very large and heavy. Built with high magnification power and large objective lenses. Larger ones (20x80) require a tripod for steady and comfortable viewing. Travel or compact binoculars are designed to be portable and light. They are not always ideal for use in low light conditions. Although, some premium brands produce high quality compact binoculars which perform well despite its small aperture. MARINE BIRDWATCHING Compass Commander,. STNER Large Objective Lenses Comfortable Ideal sizes: 8x42, Ideal sizes: 7x30, 7x50 7x50, 10x42 to grip Marine binoculars are built for sailing or boating. Some marine binoculars have handy buiilt-in compass. They are durable, waterproof, fogproof and armoured with non-slip rubber body. 7x50 is the standard in the navy / military divisions around the world. The perfect birdwatching binoculars feature superior light transmission and sharp optics. Look out for a minimum exit pupil of 5mm and magnification power between 8-10x. Any higher in magnification, it is hard to keep it stable. HUNTING THEATRE Compact & Lightweight Ultra portable and light Ideal Size: 3x25 Ideal sizes: 8x42, 8x50, 10x42, 10x50 Hunting binoculars are used to accompany rifle and riflescopes. It is important to look for rugged binoculars that offer a lot of light transmission. If you hunt in low light conditions, it is ideal to look for objective lens sizes 42mm and above. Theatre or opera binoculars (opera glasses) are designed for indoor use, therefore the manification power tends to be much lower than standard binoculars. A common magnification power is 3x accompanied with 25mm objective lenses. Perfect for concerts, the opera and musicals. ROOF PRISMS PORRO PRISMS OTHER THINGS ON BINOCULARS: BAK-4 PRISMS - PROVIDES EDGE TO EDGE ROUND VIEW (RECOMMENDED) BK-7 PRISMS - PROVIDES SQUARED EDGE VIEW PRISMS PRISMS COATINGS ON LENSES - FULLY MULTI COATED OPTICS ARE PREFERABLE EYE RELIEF - GENEROUS EYE RELIEF IS IMPORTANT FOR EYE-GLASS WEARERS. OBJECTIVE LENSES OBJECTIVE LENSES INCOMING LIGHT OPTICS CENTRAL INCOMING LIGHT Australia's Optics Superstore www.OPTICSCENTRAL.COM.AU