What profession did Charles Brabin and Karl Freund share?
Karl Freund Karl W. Freund, A.S.C. (January 16, 1890 – May 3, 1969) was a German Jewish cinematographer and film director best known for photographing "Metropolis" (1927), "Dracula" (1931), and television's "I Love Lucy" (1951-1957). Freund was an innovator in the field of cinematography and is credited with the invention of the unchained camera technique.
Karl Leonhard Karl Leonhard (21 March 1904 – 23 April 1988) was a German psychiatrist who was a student and collaborator of Karl Kleist, who himself stood in the tradition of Carl Wernicke. With Kleist, he created a complex classification of psychotic illnesses called Nosology. His work covered psychology, psychotherapy, biological psychiatry and biological psychology. Moreover, he created a classification of nonverbal communication.