Fig. 2

H. Holbein the Elder, “Tree of Jesse” (Inv. No. HM 6), MA-XRF elemental maps of the lower part of the panel painting. The Fe-K, Cu-K and Mn-K distribution are dominated by the presence of Fe-, Cu- and Mn-rich pigments and conservation materials. The underdrawing becomes apparent in large parts of the Zn-K distribution map (red arrows), revealing a pentimento in the left collar of Salomon’s blue garment (blue arrow), although Zn is also present in Cu-containing pigments (green arrows). ^©Städel Museum, Frankfurt am Main, Department for Art-Technology and Conservation of Paintings and Modern Sculpture, M. Gerken