Infrared examination

Infrared  examination enables to study the painting underneath the visible surface and detect the underdrawings.

The infrared examination technique detects highly absorbing carbon-based materials such as graphite, charcoal and ink. Infrared light partly passes through the upper paint layers of the painting. It reveals preparatory drawing which can provide valuable information about the artists' technique and can also help to solve the problems of attribution.

Moreover, with the help of infrared radiation the researcher can see through the varnish layer, study the painting layers and also discover possible later restorations or changes in the painting.