Diving into this web exhibition created by MoMA on the work of artist Lucian Freud without considering the title ("The Painter's Etchings") or reading the introductory texts can be a bit disorientating. One might ask, "Why are there so many oil paintings in a show of etchings?" The first sentence of the introduction makes it clear: "Lucian Freud is a painter who also makes etchings." The purpose...