The Lunder Conservation Center held a one day symposium on March 1, 2013 on the use of LED lighting in museum collections. A series of presentations and panel discussions from museum and lighting specialists took place over the course of the day.

Session: Joseph Padfield, Senior Scientific Officer, The National Gallery, London, "What Colour Rendering Index (CRI, Ra) and Colour Temperature Actually Mean, Comparing Light Sources and Light Exposure at The National Gallery, London"