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ZEISS Binoculars

Buying Guide for Zeiss Binoculars

For the adventurous, a good set of binoculars can enhance vacations or be a great visual aid on a hunting trip. High-powered binoculars with a variety of features are often used by the military and local authorities to help them do their job or for scientific researchers like conservationists, astronomers, and more. They can be enjoyed at home as well for gazing at constellations at night, bird watching, sporting events, and other occasions where a better view is welcome.

What types of binoculars are available?

There are several sets of Zeiss binoculars available. They are offered in compact size, mid-size, and full-size, with magnifications ranging from less than 8x to 25x. They come with a number of useful features like camouflage to assist with hunting or scientific observation, digital camera functions, fog-proofing, image stabilization controls, night vision, waterproofing, wide straps, and zoom lens capabilities. They can be used and enjoyed for a number of applications, from the opera box to your childs little league game, to your next family vacation.

What does lens coating do?

When light is sent through a lens, some of it is lost when its reflected off the surface. Thin chemical coatings on the lens can be used to reduce this loss and to improve the light transmission. With this being true, often, the coatings are just as important as the lens power. While an untreated lens can lose up to 35% of light, coatings can be used to reduce the loss to less than 5%

  • Coating: A thin anti-reflective coating of magnesium fluorite on at least one lens surface.
  • Full coating: At least one coating on both sides of the objective lens system, on both sides for an ocular lens system, and the long side of the prism.
  • Multicoating: Multiple layers of coatings on one or more of the lens surfaces based on the idea that a lone coating is harder and stronger and the light reflected from the outside surface doesnt impact image contrast.
  • Full multicoating: Multicoated lenses are the standard in high-end optics, so multiple coatings on all the lens surfaces are used.
  • Phase coating: When phase coating is used, lighting passing through roof prism binoculars folds back on itself for a smaller distance. The peaks of light waves that were lined up when they entered the binocular go out of phase, and theres interference, reducing both sharpness and brightness. Many birding binoculars employ this technique.
What do the numbers on binoculars mean?

The first number speaks of the magnification of the binoculars. In 15 x 45, they magnify the view by 15 times. Whatever you are looking at appears 15 times larger than it would to the naked eye.

The objective size (diameter in millimeters) is the second number. The objectives are the bigger lenses at the end of the binoculars, opposite the eyepieces. With approximately 25 millimeters per inch, the objectives on a pair of 15 x 45 binoculars are slightly less than 2 inches in diameter. The objective lens size determines their light-gathering power.

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