Rokeby Venus been cited as sources of inspiration for Velázquez. The nude Venuses of the Italian painters, such as Giorgione's "Sleeping Venus" (c. 1510) and Titian's "Venus of Urbino" (1538), were the main precedents. In this work, Velázquez combined two established poses for Venus: recumbent on a couch or a bed, and gazing at a mirror. She is often described as looking at herself on the mirror, although this is physically impossible since viewers can see her face reflected in their direction. This phenomenon is known as the Venus effect. In a number of ways the painting represents a pictorial departure, through
Rokeby Venus controversial in France also. In northern Europe it was seen as acceptable to portray artfully draped nudes. Examples include Rubens's "Minerva Victrix", of 1622–25, which shows Marie de' Medici with an uncovered breast, and Anthony van Dyck's 1620 painting, "The Duke and Duchess of Buckingham as Venus and Adonis". In 17th-century Spanish art, even in the depiction of sibyls, nymphs, and goddesses, the female form was always chastely covered. No painting from the 1630s or 1640s, whether in the genre, portrait, or history format, shows a Spanish female with her breasts exposed; even uncovered arms were only rarely shown. In