i consider it very bad manners, and if it is particularly disturbing to me, i request the person be thrown out. if a flash is used, i get loud about throwing the intruder out. i paid not only for the food, but the room and the ambiance. that does not include people talking on cell phones, or people doing photos.
this idiocy seems to be a high form of art in the dc area. either they go, or i go.
i have never seen anyone taking photos in france, london, spain or italy.
i have frequently seen and expect touristos taking pics in hawaii, the Caribbean and the like.