A technical X-radiograph revealing the underlying structure and brushwork of a portrait depicting Erasmus of Rotterdam.

This image presents an X-radiograph of a portrait depicting the humanist scholar Erasmus of Rotterdam. X-ray imaging is a standard procedure in conservation science, allowing researchers to observe the internal structure of a painting. By capturing the varying densities of pigments, this process reveals the artist's initial sketches, pentimenti, and the condition of the support beneath the visible surface. The radiograph displays two distinct areas of interest. The upper section captures the profile of the sitter, showing the dense application of lead-based white pigments in the face and the cap. The lower section reveals the hands of the subject, positioned as if writing or holding a quill. The contrast between the dark and light areas indicates the thickness of the paint layers and the specific materials used by the original painter. The faint, repeating star-like patterns visible across the background are likely artifacts from the film or the protective backing used during the imaging process. This print offers a unique perspective on the intersection of art and science. It removes the final varnish and colour layers to expose the skeletal framework of the composition. Such images are typically used by curators to attribute works or to monitor the degradation of historical panels. For the viewer, it provides an unconventional aesthetic experience, transforming a traditional portrait into a monochromatic study of form, shadow, and material density. It serves as a reminder of the physical labour and technical precision required in the creation of early modern portraiture.