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Long exposure photography is an intriguing photographic technique that involves slowing a camera's shutter speed, thereby allowing light more time to strike the film. The technique often produces otherworldly images in which there is a sharp contrast between stationary and moving objects -- perhaps you have seen long exposure photos of cars at night, their headlights melting into long streaks of color. Because long exposure photography often reveals hidden patterns, its applications can go far beyond generating simple eye candy.
Last summer, I had the opportunity to do research on interactive digital media (read: video games) at the University of Rochester, and I thought it might be fun to try some long exposure photography within my favorite game, World of Warcraft. Rather than do real long exposure photography, however (difficult when one has no camera!), I opted to emulate the effect using video clips captured with Fraps and processed with a program called Exposure. Both of these programs have free versions available.