Hey Allan, quite the encounter you had here! The owl looks quite concentrated on the vole. Nice light and good BG. I find the details a bit soft as posted, perhaps a resizing issue. I also wonder what caused the reflected pale circles in the eyes? Did you have time to take some verticals too?
Lucky you to get this close to this stunner, Allan! I noticed the owl was a bit soft and when I looked at your settings, I wondered why the ISO 180? My go to ISO is 800 which would have allowed you more speed and even more DOF had you gone higher than 800. I think if you gave the facial disc some sharpening, you would definitely improve the image b/c the feathers near the beak have detail. I am also curious about the eyes?
Lovely bird, well exposed. Yes, a little soft. I would think that with that focal length, a higher ISO and shutter speed combo would have served you well. Since he is a resident, hopefully you will get some more chances.