I get quite jealous when I see such lovely work with MY lens . . but I guess I have to accept that more than one of these gems were made in Canada! My guess is f 1,4 which indicates quite an achievement to have four of them pin sharp! Luck - or?

Beautiful, delicate and smooth motion, I love it, Steve!

Beautiful and soft and calm. (well, likely the wind was blowing you around, but it feels calm to me) Nicely done, Steve.