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Home > Glossary > Binoculars > Capacity

Glossary | Binoculars | Capacity

Performance data enables binoculars to be compared with one another.

More information:

  • Dioptre compensation
    Dioptre compensation can be used to compensate for differences between the right and left eye.
  • 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.
  • 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.
  • Eyepiece cups (1)
    The eyecups are located on the eyepieces and protect they eyes from stray light.
  • Focusing system (3)
    Binoculars are focused by focusing on the object, or rather the eyes of the observer.
  • Front lens diameter (1)
    The second specification in the binoculars’ model number is the front lens diameter. The larger it is, the more light the binoculars collect.
  • Glass material (1)
    A distinction is made between different glass materials. Through the use of special types of glass, the optical image can be optimized.
  • 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.
  • Lens coating (1)
    Coatings on optical surfaces have the job of minimising annoying reflections. In this way light transmission and contrast is increased.
  • 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.
  • Type of build (3)
    Describes the internal structure of a pair of binoculars, thereby further subdividing the different types.
  • 05.10.2022
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