Painted for Ludovico Sforza on the end wall of a Milanese convent refectory, the mural shows the moment after Christ announces that one of the apostles will betray him. The twelve react in four groups of three, with shock, anger and disbelief. Leonardo chose tempera over fresco so he could work slowly, and the paint soon began to fail; little original surface survives.
Look closer
Judas, leaning back into shadow, clutches a small bag and tips over the salt cellar. Every perspective line in the room converges on Christ's head.
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Compared by a vision model
