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If you ever traveled through Chicago's O'Hare Airport, chances are you experienced the United Airlines underground walkway designed by Helmut Jahn. A long tunnel with a moving walkway, it offers a kinetic sculpture of light and sound. The dynamic walkway displays a variety of shapes and choices for viewing angles and cropping. When cropping an image to a panoramic format, the perspective does not change (it does not become more wide angle) it only changes the aspect ratio of length to width.

Roll over to see before and after images.