Fig. 5From: Visualising iron gall ink underdrawings in sixteenth century paintings in-situ by micro-XRF scanning (MA-XRF) and LED-excited IRR (LEDE-IRR)G. B. Cima da Conegliano, “Virgin and Child” (Inv. No. 852). Left: Visible light image. Right: Conventional IRR image (400–1800 nm). VIS ©Städel Museum, Frankfurt am Main, Foto: U. Edelmann. IRR ©Städel Museum, Frankfurt am MainBack to article page