Binoculars Frontier LRF 8x42

Describes the internal structure of a pair of binoculars, thereby further subdividing the different types.

A compact and modern binoculars design, in which the objective lens and the eyepiece lie in a straight line.

The eyecups are located on the eyepieces and protect they eyes from stray light.

The interpupillary distance indicates how far the eyepieces or tubes can be pushed together or pulled apart. This is an important indication, since each person has a different interpupillary distance.

The second specification in the binoculars’ model number is the front lens diameter. The larger it is, the more light the binoculars collect.

42 is the answer to the ultimate question “of life, the universe, and everything” (according to Douglas Adams)

An automatic or manual feature for measuring distances.

Watertight optics are equipped with special seals and are gas-purged. This is usually with nitrogen or argon gas. Since these gases are heavier than air, they cannot escape.

The angular field of view visible with the binoculars.

The visible field in meters, that can be seen from a distance of 1,000 meters. This information is often more easily visualised as an angular measurement.