"Citizen Kane" was edited by Robert Wise and assistant editor Mark Robson. Both would become successful film directors. Wise was hired after Welles finished shooting the "camera tests" and began officially making the film. Wise said that Welles "had an older editor assigned to him for those tests and evidently he was not too happy and asked to have somebody else. I was roughly Orson's age and had several good credits." Wise and Robson began editing the film while it was still shooting and said that they "could tell certainly that we were getting something very special. It was outstanding film day in and day out."