Restoration of the Sistine Chapel frescoes between 1980 and 1994. This most recent restoration had a profound effect on art lovers and historians, as colours and details that had not been seen for centuries were revealed. It has been claimed that as a result "Every book on Michelangelo will have to be rewritten". Others, such as the art historian James Beck of ArtWatch International, have been extremely critical of the restoration, saying that the restorers have not realised the true intentions of the artist. This is the subject of continuing debate. The frescoes on the ceiling of the Sistine Chapel had a number of interventions prior
Illusionistic ceiling painting From 1691 to 1694 Andrea Pozzo painted the "Entrance of Saint Ignatius into Paradise" on the nave vault of Sant'Ignazio, Rome, with theatricality and emotion. Illusionistic ceiling painting Illusionistic ceiling painting, which includes the techniques of perspective di sotto in sù and quadratura, is the tradition in Renaissance, Baroque and Rococo art in which trompe l'oeil, perspective tools such as foreshortening, and other spatial effects are used to create the illusion of three-dimensional space on an otherwise two-dimensional or mostly flat ceiling surface above the viewer. It is frequently used to create the illusion an open sky, such as with