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Steiner Binoculars & Monoculars

A Quick Guide to Steiner Binoculars and Monoculars

Using the latest German optics technology to provide a sharp, crisp view, Steiner binoculars and monoculars are designed for use on either land or sea by adventure-seekers, biologists, hunters, law enforcement, military personnel, and more. They are crafted to provide precision optics using advanced lens coatings and designed to be durable for your active lifestyle.

Whats the difference between binocular and monocular?

The key difference between monocular and binocular vision is eye location. With monocular vision, only one eye can view the presented visual field, and the eyes are located at the side of the head. One eye is unable to view what the other is viewing. Theres no chance of vision overlap because of the eye positioning.

With binocular vision, both eyes take in the visual field presented, and the eyes are located at the front of the head. Vision does overlap because the positions of the eyes are close together. With the ability to overlap vision fields in binocular vision, theres also the ability to estimate distances.

Whatu001as the difference between multi-coated and fully multi-coated optics?

While many binoculars on eBay offer multi-coated oculars and objectives, its vital to ensure that all internal air-to-glass surfaces are coated (or fully-coated) or multi-coated (also called fully multi-coated). There are usually 10 to 20 exposed glass surfaces on each side of binoculars. That means a loss of 5% per uncoated surface that could leave you with a binocular that transfers less than half the light coming in through its objectives. You can find affordable high-quality binoculars and monoculars on eBay that have all air-to-glass surfaces multi-coated to allow the highest level of light transmission.

What do the numbers 10X50 mean as pertains to binoculars?
  • Magnification (the first number): This refers to magnification. With 10X50 as an example, the view is magnified by 10 times. Objects are shown 10 times larger than they would appear without the use of binoculars.
  • Objective size (the second number): This refers to the objective size (diameter in millimeters). Objectives are large lenses located at the end of the binocular, on the opposite side from the eyepieces. With approximately 25mm to an inch, a 10X50 binoculars objectives are about two inches in diameter. The light-gathering power of the binoculars depends on the size of the objective lenses. In the daylight, the bigger the objective lenses, the lighter and crisper the visual field will appear. Also, as the size of the objective lenses increases, so does the physical size and weight of the binoculars.
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