Originally Posted by ic-racer
A human runner at 6 meters could cross the entire angle of view of a 50mm lens in about one second.
With that same lens at 1:1, and ant traveling at 0.1 meters/second will also travel across the entire field of view in about a second, thus requiring the same shutter speed to stop the human runner.
Not if you smack him with a shoe. The pic becomes more of an abstract though