barreldistorsjon
Barreldistorsjon, also known as barrel distortion, is a type of optical aberration in which image magnification decreases with distance from the optical axis. This phenomenon causes straight lines, especially those near the edges of an image, to appear curved outward, resembling the shape of a barrel. It is a common issue in photography and optical systems, particularly with wide-angle lenses.
The primary cause of barreldistorsjon is the varying magnification across the image field. In an ideal lens,
Barreldistorsjon can be quantified using the distortion coefficient, often denoted as k. A positive k value
To correct barreldistorsjon, photographers and optical engineers employ several techniques. Lens designers can minimize the effect
In summary, barreldistorsjon is a common optical aberration that causes straight lines to curve outward near