Conservation-restoration of Leonardo da Vinci's The Last Supper until 1498. The scene is understood to depict the Bible verse John 13:22, showing the reactions of the Twelve Disciples, at the Last Supper, in the moments following Jesus’s announcement that one among them will betray him. When he received the commission for "The Last Supper", Leonardo da Vinci had never worked on a piece of this great a size, fifteen feet high by almost twenty-nine feet wide. He also had very limited experience working in the technique known as fresco, mixing pigment into wet plaster to create a permanent bond. Traditionally, fresco painters put down many successive layers of
Lucan portrait of Leonardo da Vinci himself. Nevertheless, the Acerenza portrait is intriguing because it adds a new element to the Leonardo's puzzle. Here we have Leonardo depicted as a middle-aged, blue-eyed man." Since that time the focus of attention and research has been directed at proving the painting to be the work of Leonardo da Vinci. The Vaglia Basilicata City Council then funded an investigation by a team of scientists, many of whom were from non-art related disciplines, to report upon anything which could be tested to either support or deny the attribution to Leonardo. A preliminary cleaning of the painting was carried out, by