Infrared reflectograms of the original and the copy

Certain details indicate that the painter of the Mona Lisa in the Prado followed Leonardo step by step as the master worked on the original. The similarities in the two paintings between outlines, preparatory work, and pentimenti, for example, can be seen by comparing:

  • the infrared reflectogram of the original,
  • with that of the copy in the Prado.
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