Defishing

Recently I bought a 8mm f3.5 Korean fisheye lens. It built like tank and the focuser is extremely smooth like L-class lens. When you stop down to f8, you remove any need of focusing virtually.

One of the usages for fisheye lens is to work as an ultra-wide lens, however, we might want to remove the fisheye effect in certain situation. There is a simple way to do that, for example, in Photoshop, you may use the "transformation" function under the "edit" manual to do it.

This is the original:-



In less than one minute, you can fix the curve and then you may crop the edges:-