Shot with a tripod, this is intended to be shown next to the ISO400 4s f/5.6 test to show that the difference in noise is really quite small. It is still present, however (most easily visible by going to the original size image and then zooming in on the statue), and the best way to take this shot would have been at ISO100 with the Speedlite 580EX flash (a shot that I unfortunately did not take on this run, though a shot with the 580EX at ISO400 is available for comparison).