I drove around the uk for a week before I figured out what this sign meant, lol!
That's funny! I had the same experience this summer driving in Scotland and, until near the end of the vacation, thought they denoted picture taking spots. Of course I was fairly white-knuckled, it being my first time driving there, and couldn't give much focus to the impressive countryside; so thanks to the antique-camera signs I built this delusion that there were TONS of picturesque spots along the roads... which there really kind of were