I don't think she realised - but there is a heck of a thunk when an FM3A mirror moves up and then down again so you never know, she might have. Taken at the Roman Baths, as you can see. You have to go there when in Bath - it's the law, y'know. I always enjoy it - especially when it's winter and there's not too many tourists about.
It was all a bit much for this lady, though:
Now I know what you're thinking: He's gone and cut her feet off, clearly working too quickly in an attempt to capture 'the moment'. And you might be right.
All on the Nikon/50mm/HP5/ID-11 combo...hard to beat.