Describes where any element or piece of a surface or image is missing.


Parts of the decorative plaster moulding on this frame have cracked and fallen off. Photo courtesy of Tony Rich, Art Conservation Framers.

The emulsion on this opaltype has become desiccated and brittle, resulting in loss to the image. Photo courtesy of Lydia Egunnike.

Part of the paint surface has been lost from this oil on board. Photo courtesy of Alice Cannon.