The Canaletto view is a painting from 1748, and you can still stand on the exact spot it was painted from. From the Neustadt bank the Hofkirche, the Ständehaus, the Frauenkirche and the Brühl Terrace line up over the water. Because the front faces north it takes raking light from the left in the late afternoon in summer and nothing but diffuse light all day in winter — which means a December booking here looks more honest than a July one at midday.
Dresden’s second subject is interiors, and they are tightly governed. The Zwinger, the Semperoper and the Residenzschloss belong to the state art collections or to the Free State, and commercial photography in them needs permission and carries a fee; the Zwinger courtyard does not, but the galleries and pavilions within it can, depending on the area. Anyone planning a wedding in Dresden settles that at the same time as the registry office rather than after it — and the registry office itself sits in a building where photography is allowed, which is not true everywhere.