In barrel distortion, image magnification decreases with distance from the optical axis. The apparent effect is an image that seems to be mapped around a sphere (or barrel). Fisheye lenses, which take hemispherical views, utilize this type of distortion as a way to map an infinitely wide object plane into a finite image area.

Jan 16, 2025 · Barrel distortion, also known as lens barrel distortion or simply barrel lens distortion, occurs when straight lines appear abnormally curved outwards from the center of the image. This makes photos seem inflated or bloated, almost as if they were wrapped around the outside of a barrel.

Jul 5, 2020 · Barrel distortion is typically present on most wide angle prime lenses and many zoom lenses with relatively short focal lengths. The amount of distortion can vary, depending on camera to subject distance. Even standard 50mm prime lenses can potentially yield barrel distortion at close distances.

Mar 16, 2021 · Barrel distortion is associated with wide-angle lenses and zoom wide-angle lenses at the shorter focal ranges. It is a lens defect that causes straight lines to bend outwards and is most noticeable along the edges.

Jun 5, 2024 · Barrel distortion is a common lens issue in photography. It causes straight lines to curve out but once you know what causes it, then you can learn how to fix it.

Dec 22, 2016 · Most lenses with barrel distortion are wider angle lenses that squeeze a very wide scene onto a narrower sensor or piece of film. The ultimate in barrel distortion is a fisheye lens, which sacrifices rectilinear projection in favor of a wider …

Sep 7, 2023 · Lens barrel distortion is a common optical aberration that affects the shape of images captured by a camera lens. It is caused by the curvature of the lens elements and can result in images that appear to be bulging or curved outwards from the centre.

In simple lenses, there are two main types of distortion: negative, barrel distortion, where points in the FOV appear too close to the center; and positive, pincushion distortion, where points are too far away. Barrel and pincushion refer to the shape of the field when distorted, shown in Figure 2.

May 28, 2024 · Barrel distortion is a common optical anomaly encountered in photography, particularly with wide-angle lenses. This phenomenon causes images to appear spherically distorted, making straight lines curve outward, resembling the shape of a barrel.

If, on the other hand, a square is imaged in the shape of a barrel (its sides bowed outward), we speak of barrel distortion. Barrel distortion results when m is less off-axis than on-axis and is also called negative distortion. Chromatic aberration manifests itself in two ways.