Whats Barrel Distortion?
Basically, barrel distortion causes images to look as if they’re spherized from the center of the image out, or fat in the middle. Take for example the building shown in figure 1. Notice how the edges of the building appear to be curving outward from the center of the image, making an otherwise erect building look rather bloated. So, if you’ve noticed that your photos have been a little too well rounded, take a look at how to lessen the load.
