Giotto's master Cimabue painted in a Medieval style. But Giotto's paintings look quite different. The writer Giorgio Vasari says that Giotto brought about a complete change in painting, with a more natural style. Giotto would have seen the paintings of Pietro Cavallini and some Ancient Roman sculpture, on his visit to Rome. He also saw the sculpture of Arnolfo di Cambio who worked in Florence. The style of these sculptured figures was solid and natural, not "elongated" (made longer) like most Medieval sculptured and painted figures.