Spotting Scopes - Glossary

Magnification is the magnifying power of an instrument that enlarges the viewing image and makes the observed object seem bigger. For…

The second number in the product’s name represents the lens diameter. For example, 10×42 binoculars have a lens diameter of…

Optical products are often filled with a dry gas to prevent the condensation on the inside of the housing when exposing them to temperature…

The field of view is an area the observer sees when looking through the optical product. Although it primarily depends on how…

The waterproof feature is made to keep the optical products sealed and protected from water or dust. Such products are suitable for marine,…