Provenance can be a rather varied thing…
presumably nice man was gazing at me with an expression bordering on delight brightening his beardy visage. How does a chap respond to this? ‘Oh’ was the best I could do. And in the next moment, in an action which always signals the onset of deep despair (mine), he produced a mobile phone and announced to all clustered nearby, ‘I’ve got some photos.’ Which was true, although it took some time for him to flick fingers and thumbs sufficiently to actually find them. Time passes slowly at moments like this.