I thought I had a fast camera and lens until trying to capture images of swallows and swifts in flight. I think this was the best of 50-60 image attempts. They sure are in a hurry in the spring time. Between catching enough food on the wing to keep up their metabolism and finding mates and building nests it’s no wonder they are always zipping by. They still have enough time to check things out, though. I turned around once to re-position my camera and caught one of these hovering about 4 feet away, looking me over carefully before wheeling away and moving on. Guess I was too big to take a bite out of.