Features - June 2, 2008 Digital Forensics: 5 Ways to Spot a Fake Photo By Hany Farid This story is a supplement to the feature "Digital Forensics: How Experts Uncover Doctored Images" which was printed in the June 2008 issue of Scientific American. Lighting Composite images made of pieces from different photographs can display subtle differences in the lighting conditions under which each person or object was originally photographed. Such discrepancies will often go unnoticed by the naked eye. For an image such as the one at the right, my group can estimate the direction of the light source for...