Taking pictures of unkonwn people is always tricky. Even if the law in Sweden allows public photography it always feels like an invasion of privacy to point a lens at someone. So first when I saw this strange periscope lens it made perfect sense.
So a periscope lens would prevent the photographer from being spotted. But using a periscope to take photographs actually seems even worse than pointing an ordinary lens on people. Ah, what an ethical dilemma…