Correcting Lens Distortion Tutorial. 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... [PhotographyBLOG]
Very good reference to PTLens. PTLens is a photoshop plug-in allowing you to correct aberration in your pictures if you know which lens was used to take the picture. To read later.
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