DagT mused: > > The speed of the *istD is OK with me. > > The reaction time of a photographer who has some idea of how he wants > the picture is about 1/10 second and will beat even the 1DmkII if the > intention is to get one good picture.
If your intention is to get one good picture, and you can predict when the "moment" will come, you can do a great deal better than 1/10 of a second. I shoot race cars that travel at speeds of up to 200mph. At those kind of speeds a car travels around 30 feet in 1/10 of a second. If I'm trying for a finish-line shot, capturing the car just as it crosses the finish line, a more reasonable guess would be that I can squeeze off the shot to a timing accuracy of around 1/100 of a second (i.e. with the car within 3 feet of the line).
