Technique Analysis

Infrared reflectography, X-ray imaging, and multispectral analysis of Leonardo's paintings — revealing the underdrawings, pentimenti, and layered construction beneath the visible surface.

Mona Lisa Comparisons
Louvre and Prado comparison notes for composition, color, and workshop context
Virgin of the Rocks (Louvre) — Analysis
c. 1483–1486 · Infrared reveals major compositional changes
Lady with an Ermine — Pentimento
c. 1489–1490 · X-ray reveals ermine added in third revision
Ginevra de' Benci — Cropped Panel
c. 1474–1478 · National Gallery of Art — Lower third removed, hands lost
Mona Lisa
Painting page, context, and comparison studies
Research Hub
Published investigations, sources, and methodology notes