Superb!
Ursyn wrote in post #17927112
Top-notch image. I assume that clouds were moving really fast to give such an effect.
Actually, ultrawide angles will do that, even with gentle movement, add to it that it was a 191 seconds (over 3 minutes) and you will get very dramatic blur. Notice it blurs the most towards the edges of the ultrawide where the subject moving through several arc degrees are greater (hence more blur) than the center most points where the change in clouds over arc degrees are not much, so they are hardly blurred. This is why ultrawides blur so nicely at close range and around the edges of the frame, even in short periods of time. Add a bunch of time, and you get dramatic blur.
Very best,