Binoculars Sierra 10x25

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.

Binoculars are focused by focusing on the object, or rather the eyes of the observer.

The sharpness is adjusted via a central focusing wheel.

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

A distinction is made between different glass materials. Through the use of special types of glass, the optical image can be optimized.

The binoculars’ magnification may be variably adjusted using either a lever or a scroll-wheel.

On these models, the compass display is usually shown in a small part of the field of view. A distinction is made between digital and manual versions.

These eyepieces have a relatively large eye relief. It is possible to wear spectacles while observing and still benefit from a comfortable viewing position.

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

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.

Used to compare binoculars’ performance in low light conditions. The higher the number, the more suitable it is for twilight. However, the value should always be considered in connection with the exit pupil.

You are fascinated by the stars, but don't want to set up telescope right now? You can immerse yourself in the world of astronomy using many binoculars.

Blackbird, thrush, finch or starling?
Binoculars helps to spot and identify the bird.

Whether travelling or on a cycling tour, you should always have small binoculars to hand.

Even the sailors of old used binoculars to orient themselves on the high seas. In some cases, modern binoculars even offer a built-in compass and a reticle for estimating distances.