Specifications

Capacity

Performance data enables binoculars to be compared with one another.

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Type of build

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

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Roof

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

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Eye relief (mm)

Eye relief

The eye relief specifies the maximum distance from the eyepiece at which the entire field of view can still be seen. A suitable distance for spectacles wearers is >16mm.

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Eyepiece cups

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

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rotatable

Diopter compensation

Dioptre compensation

Dioptre compensation can be used to compensate for differences between the right and left eye.

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-1,0 | +1,0

Interpupillar distance (mm)

Interpupillary distance

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.

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2,2 - 3

Lens coating

Coatings on optical surfaces have the job of minimising annoying reflections. In this way light transmission and contrast is increased.

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fully, multiple

Front lens diameter (mm)

Front lens diameter

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

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

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Exit pupil (mm)

Exit pupil

Relates to the beam of light emitted by the eyepiece. The exit pupil is closely associated with the brightness of a pair of binoculars.

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4,2

Magnification

The first number in the binoculars’ model number represents the magnification. It specifies how much larger an object appears compared to when viewed with the naked eye.

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Special features

Binoculars can be equipped with additional functions such as an image stabilizer or a zoom.

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Rangefinder

An automatic or manual feature for measuring distances.

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yes

Splash-proof

These binoculars may only be exposed to moderate moisture or light drops of water.

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yes

Watertight

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.

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yes

Protection bag

yes

inert gas charge

yes

Threaded tripod connector

A 1/4" thread for connection to a photographic tripod. Most binoculars require an additional tripod adapter.

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Lens cover

yes

eyepiece cap

yes

Carrying strap

yes

Field of view

Information about the field of view enables binoculars to be more easily compared with one another.

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True field of view (°)

True field of view

The angular field of view visible with the binoculars.

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Apparent field of view (°)

Field of view at 1,000 m (m)

Field of view at 1,000 m

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.

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105