One way that you can test for fakery with digital images is that CCDs have their own signature noise patterns: See: http://citeseerx.ist.psu.edu/viewdoc/summar

One way that you can test for fakery with digital images is that CCDs have their own signature noise patterns: See: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.186.5943 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.186.... http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.186.6468 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.186....