Lens correction projection?

Question

What is the simplest way to un-warp a photo made using fisheye or wide-angle lens? I'm looking a pixel projection formula that has few parameters. Camera and lens parameters will not be known, so user has to change the parameters visually. Thanks

Answer 1

Depending on the degree of distortion, Photshop's Warp tool might be your answer. I don't think, however, that it can undo the nearly circular aspect of the typical fisheye lens. That said, Lightroom's Develop panel has two main correctives. One is the Profile tool in its manual mode. The other is the Transform panel which has several tabs that will correct distortion.