Got a strange effect when I got some film back recently from the lab. Not sure if this was chemical residue from sloppy processing or the effects of our hot weather or something else. It only appeared on one out of 36 frames. So I'm discarding hot weather. Whatever the cause, it's growing on me. Shame I was so bloody-minded back at art school when they wanted me to learn how to process colour. And I didn't. There's now a dwindling number of folks processing film now. Never too old to learn I suppose.