This happened to me recently when I tried to take a picture of my wife with my iphone while we were both riding on bikes. Wikipedia has more information: http

This happened to me recently when I tried to take a picture of my wife with my iphone while we were both riding on bikes. Wikipedia has more information: http://en.wikipedia.org/wiki/Rolling_shutter http://en.wikipedia.org/wiki/Rolling_shutter This site offers some nice video demonstration of how the scanning affects the final image: http://dvxuser.com/jason/CMOS-CCD/ http://dvxuser.com/jason/CMOS-CCD/