The latest installment in the Exhibition on Screen gallery-film series, Canaletto and the Art of Venice provides viewers with access to the art exhibit currently on view at the Queen's Gallery in Buckingham Palace. It centers on the enigmatic artist Canaletto, a guy whose personal life is mired in mystery. The film makes its local debut today at 1:45 p.m. at the Cleveland Museum of Art. Tickets are $10, or $7 for CMA members. (Niesel)