@aidan,
Interesting - maybe I'll get myself together to show a photo I took from the passenger seat when crossing a minor bridge in Riverside County (it went out after we passed it again on the way back) in a rainstorm, no focus at all in the pic. Made a painting of it, 3 x 4 feet, still a favorite, even shown in an official museum. No "focus" in the painting either. Trouble is, I don't know where the original photo or neg is (well, I do, but it's a thicket - and the photo I have enlarged for my own amusement is 11 x 14, hard to scan and show. But, to the point, I'm interested in non focus too.