![]() For nighttime observations, choose a pair of infrared binoculars, as these provide night vision.īuild quality is also important. Fog-proof lenses resist fogging in cold and humid conditions. Lens coating prevents light scattering and reduces glare by cutting down on light reflection. Models with coated lenses produce brighter images. ![]() ![]() Spotting and riflescopes are popular magnifying instruments with this feature. A 10-22x50 model has 55mm objective lenses with a minimum magnification of 10x and a maximum magnification of 22x. Zoom binoculars have a unique design that allows adjustable magnification. Higher magnifications, such as those on astronomy binoculars and spotting scopes, narrow your field of view but show faraway subjects in detail. These have fields of view wide enough to enjoy fast-moving action. For improved visibility at night, consider a pair of night vision binoculars.įor bird watching or to observe sporting events, look for models with 7-12x magnification. Bigger lenses capture more light and are better in low-light conditions. For example, an 8x20 model makes subjects look 8x bigger while the diameter of its objective lenses is 20mm. These are magnification, and the size of the objective lenses used. Porro prisms produce greater depth perception and wider field of view.īinoculars usually have two set of numbers printed on them. The DCF arrangement produces slim, straight H-shaped instruments with eyepieces directly behind objective lenses, while ZCF models are conical or M-shaped instruments. Roof-prism or DCF (Dach Center Focus) models have overlapping prisms, while Porro prism (ZCF or Zeiss Center Focus) have staggered ones. Hunting binoculars are usually mid-sized models while astronomy ones are large, and may require mounting hardware.īinoculars use either roof or Porro prisms. Mid-sized units balance power, weight, and light transmission, and are the ones most suitable for wildlife observations. Compact and pocket-sized models have small lenses while full-sized and large ones pack lenses big enough to show clear images in low-light conditions. When categorized by size, there are full-sized, mid-sized, and compact binoculars. You can classify binoculars by size, usage, and prism arrangement. Compared to monoculars, they produce three-dimensional images and give magnified images a true sense of depth. Also known as field glasses, a pair of binoculars is an optical magnifying instrument made of two telescopes. They are made of lenses and prisms mounted inside metal and plastic frames. ![]()
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