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Also go to Photography Changes What We Are Willing to Believe by Hany Farid.
Jim
Digital detectives discern Photoshop fakery by Chris Gaylord
Farid can now run possible forgeries through a gamut of tests, even checking the light reflections in people's eyes to triangulate the location of the flash camera that took the picture.
If the analysis of subjects in a photo shows that the camera had to be in multiple places at once, the shot's a fake.
Chris Gaylord
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