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A complete guide to selecting a binocular
A binocular is a device used for magnification
How binoculars work
Selectiong a binocular
There are three main sizes of binoculars
Full-size or traditional binoculars
With Objective Lenses around 50mm
Full Size
Mid-size binocular
Objective lenses sized from 32 to 42mm
Binoculars
Compact binocular
Objective lenses sized from 21 to 28mm
binocular
Binoculars have two major designs
Porro Prism has a staggered lens assembly
Lenses
Roof Prism has a straight through lens assembly
binocular is developed
A monocular is one side of a binocular
binocular
Some binoculars have special features
Fixed focus
In focus through working range
Fixed Focus binoculars
Splash proof or Waterproof
O-ring sealed and Nitrogen filled
binoculars
Zoom magnification
3 or 4x minimum magnification
binocular
Quality of binoculars varies dramatically
Lens coating
Coated through to Fully Multi-Coated
binoculars
Lens Quality
Extra Low Distortion Glass
binoculars
More complex design
Apochromatic up to 6 lenses in the front objective
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Some binoculars are designed for a specific use
Marine binocular
Fixed magnification normaly 7x
Binoculars
Image Stabilised Binocular
Shake free for high magnification and stable image
Binoculars
Wide Angle Binocular
Extremly wide field of view
Binoculars
High magnification binoculars are available
Traditional Size High Power Bioculars
Fixed magnification in the range of 12x - 20x
High power mifex magnifiaction
Large high power Binoculars
Fixed magnification in the range of 20x - 30x
Large size binoculars with tripod mnount
Heavy duty giant Binoculars
Fixed magnification in the range of 20x - 40x
Tripod or Stand based giant binoculars