New Scientist reports that :-
Wide-angle lenses are great for taking dramatic photographs with a big scenic sweep, but they've got a big weakness too – they distort objects towards the edge of the frame. Now software can make wide-angled digital photos with perfect perspective, thanks to a secret of 18th-century painters. The so-called Panini software can even turn shots taken with a fish-eye lens into natural-looking images.
Wide-angle views are notoriously difficult to display on a flat surface because of perspective problems. In the case of photography, most cameras use rectilinear lenses, which are designed to keep straight-edged features straight in the captured image. That's fine for many shots, but lenses that capture views wider than 120 degrees skew objects towards the edge of the frame, says Thomas Sharpless, a retired software engineer, based in Philadelphia, Pennsylvania, who created the Panini software.
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