The photographer discovers himself/herself being...

The photographer discovers himself/herself being photographed and we can guess he is uncomfortable. Unsuccessfully he/she tries to recompose his posture and to look like a photographer taking photos. But no, he is and continues to be a spectator. The momentous fact of being photographed leads him to becoming an actor. And, as always, actors must assume a role, which is only an elegant way of avoiding to say they must choose sides, choose a faction, take an option.