X-radiograph(s) of "Duchesse of Alba"

Editor: This is an X-radiograph of the "Duchesse of Alba", by an unknown artist. It's fascinating to see a portrait through this lens! What do you see when you look at this image? Curator: The stark contrast reveals the painting's skeletal structure. Note the density variations suggesting layered applications of pigment. The craquelure pattern speaks to the materiality and age of the artwork, doesn’t it? Editor: Yes, it’s incredible! This technical view really strips it down to its basic formal elements. Thanks! Curator: Indeed, it's a testament to how much the physical object itself can tell us.