In the ensuing centuries, the painting sustained additional damage. In 1652 a door was cut into the north wall, removing Jesus’ feet and loosening the paint and plaster. Several restorations followed, with heavy-handed retouches and the application of varnish, glue, solvents, and the like.
In the Lord of the Rings, to make Elijah Wood (Frodo) look smaller, they made him stand/sit in a way where he is farther away, but you can't tell he's farther away because it is an illusion.
