Venice: Canaletto and His Rivals The exhibition finished at the National Gallery, London, on 16 January 2011. It runs at the National Gallery, Washington, from 20 February to 30 May 2011. Reviewed by David R. Marshall Canaletto is synonymous with Venetian view painting, and when you enter this exhibition you can see why: it looks like room after room of Canalettos. But gradually this impression resolves itself into several different painters and manners. Some have lamented the lack of the chronological organisation that informs most recent Canaletto and Bellotto exhibitions,…