Great set MA. Very sharp considering the speed of the cars. Just had to check your exif data on a couple of pictures and noticed that they were at 1/640 sec. Interesting that you were still getting a blurr in the background. I tried this at Mosport with the vintage cars and I was trying to take them at 1/100 in order to get the blurred background. Mind you the vintage cars weren't as fast as these cars would be.
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