It is really interesting how our brain compensates for the motion blur in films. I mean, you don't usually notice that things are really blurry until you pause the movie.
Our brain compensates for motion blur, period, because everything we see is effectively slightly blurred due to our eyes' response to light changes being non-instantaneous.
Specifically, cone response time seems to be on the order of 15-20ms if I read http://www.ncbi.nlm.nih.gov/pubmed/14990682 correctly. And that's just to go from initial stimulation to peak response; presumably the response also dies off in nonzero time, so the full width of the response in time is more than 20ms. Rods respond slower than cones according to http://en.wikipedia.org/wiki/Photoreceptor_cell though I can't find numbers.
