focal length
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focal length
In optics and photography, the distance between the principal plane of a lens or camera lens and its focal point. The focal length determines the angle of view and the magnification of a lens.
Für Landschaftsaufnahmen wählte der Fotograf ein Objektiv mit kurzer Brennweite, um einen weiten Bildausschnitt zu erhalten.
For landscape shots, the photographer chose a lens with a short focal length in order to get a wide section of the image.
'Brennweite' (focal length) is made up of 'brennen' (to burn) and 'Weite' (width/distance). It refers to the 'Brennpunkt' (focal point), the point where light rays are concentrated and could theoretically ignite something. The focal length is the 'Weite' (distance) to this point.
Objektive mit langer Brennweite eignen sich gut für Porträts.
Lenses with a long focal length are well suited for portraits.
This word is a technical term from optics and is used almost exclusively in the context of photography and with optical devices such as cameras, telescopes, or microscopes.
Ein Anfänger in der Fotografie muss erst den Umgang mit verschiedenen Brennweiten lernen.
A beginner in photography first has to learn how to work with different focal lengths.
'Brennweite' (focal length) is frequently combined with the adjectives 'kurz' (short), 'lang' (long), 'fest' (fixed), or 'variabel' (variable). Typical verbs are 'einstellen' (to set), 'ändern' (to change), or 'haben' (to have).
Mit diesem Zoomobjektiv kannst du die Brennweite flexibel ändern.
With this zoom lens, you can change the focal length flexibly.
focus
'der Fokus' and 'die Brennweite' both belong to optics and photography, but they do not mean the same thing. 'der Fokus' is the point where light rays meet or the point an image is focused on sharply. 'die Brennweite' is a distance in the lens or camera lens. It affects how large or wide an image appears. The words can be confused because both occur with cameras and lenses. In practical terms: the focus concerns sharpness on a point, while the focal length concerns the image frame and magnification.
Für das Landschaftsbild wählt Emma eine kurze Brennweite.
For the landscape photo, Emma chooses a short focal length.
Bei dem Foto liegt der Fokus auf dem Gesicht des Kindes.
In the photo, the focus is on the child's face.