Conservation departments

X-ray of a detail of the painting, showing St Bernardino and the architectural features behind him
In the x-radiograph the incisions can be seen clearly where they have filled up with x-ray dense paint and appear as strong white lines. The perspective lines were incised using a straight edge but most of the other incisions were made freehand - for example San Bernardino’s halo and the curves of the apse vaulting.
