So I went to the F1 race in Montreal 2 weeks ago. I got a few decent shots. I tried some panning shots.... dummy I am. I took them all with a much too fast shutter speed. I can't tell which shots were pans and which ones were not. Live and learn I guess. It was bright and sunny and I was shooting in aperture priority mode and not thinking about shutter speed at all. It worked great for freezing the action, and worked like soggy balls on the pans.