Don:
These and the USGP are superb! Question....in using the autofocus to get these shots, do you us the AF-C mode or the AF-S mode? Looks like the 70-200 AF-S VR is the way to go.....do you use a 300mm at all? I'm thinking about the 300mm F4 for Indy this year and try to get seats at the corner six terrace.