trompe l'oeil (optical illusion) and the effects of the medium are found in several works attributed to him such as the "Unswept Floor" in the Vatican museum, representing the leftovers of a repast (fish bones, bones, empty shells, etc.) and the "Dove Basin" at the Capitoline Museum, known by means of a reproduction discovered in Hadrian's Villa. In it one sees four doves perched on the edge of a basin filled with water. One of them is watering herself while the others seem to be resting, which creates effects of reflections and shadow perfectly studied by the artist.