About Photography have published an interesting look at correcting lens distortion, both before taking a photograph and afterwards using computer software.

“Digital images can be corrected in various ways after the picture has been shot. Increasingly we can expect digital cameras to incorporate lens-specific algorithms to correct some of the lens faults. This will of course increase the desirability of lenses from the camera manufacturer, as those from the independents are unlikely to be catered for unless legislation for free competition forces the makers to do so.”

Website: About Photography - Correcting Lens Distortion