The center of the image may look optically correct, but the further you go to the edges of the image – and the subject – the more obvious the distortion becomes. In standard lenses, you will see barrel distortion most prominently when you photograph things with clearly defined lines, such as images of architecture. The amount of barrel distortion will always differ depending not only on the lens but also on the distance between the camera and the subject you are photographing. Of course, it’s not just lines and edges, it’s every pixel, but it’s in straight lines and edges away from the center that you will notice it.īarrel distortion is present in most wide-angle prime lenses and zoom lenses, such as prime lenses with a focal length of 14mm, 20mm and 24mm through to zooms with a variable focal length of 14-24mm and 16-35mm. You can often see this in wide-angle images of cityscapes. Barrel Distortionīarrel Distortion is when vertical and horizontal lines appear to bulge out from the center of the image. This is not an optical distortion caused by the lens, so we will consider it later.įirst up though, there are three different types of optical distortion. There’s another type of distortion called perspective distortion which occurs as a result of the positioning of the camera relative to the subject. To put it simply, optical distortion makes straight lines appear curved or warped in photographs. To understand why it happens, first think about what lenses actually are: they’re curved pieces of glass that have to transfer an image onto the flat surface of the camera’s sensor.
Camera lens distortion card professional#
Lens distortion, or optical distortion, occurs in many camera lenses of various focal length – even expensive, professional lenses.
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