Archival Digitization and the Struggle to Create Useful Digital Reproductions

The past decade has fundamentally changed how archives provide access to historical records.  Many archives now provide digital access to collections, have digitization on demand services, and have started to prioritize collections for digitization.  Much of this digitization has been driven by funding bodies and a desire to increase accessibility to collections. But how has the digitization of archival records been received by historians, genealogists, and other patrons?