It’s too early to give a detailed answer, I suspect it isn’t worth 3-4 times the cost of a Sigma 30mm f/1.4! So far I’ve found focussing to be nice and fast and the 25mm is easier to work with when the subjects are close. I can see the 17mm f/1.2 in my future. I often lust after the full frame look and this lens is pretty close to what I’m after!Nice. How do you like it compared to the Sigma 30/1.4 you (used to?) have?