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 in the Museo del Prado, and other works. The figures of both Venus and Cupid were significantly altered during the painting process, the result of the artist's corrections to the contours as initially painted. Pentimenti can be seen in Venus's upraised arm, in the position of her left shoulder, and on her head. Infra-red reveals that she was originally shown more upright with her head turned to the left. An area on the left of the painting, extending from Venus's left foot to the left leg and foot of Cupid, is apparently unfinished, but this feature is seen in many