Franz F. Planer, A.S.C. was an Austrian cinematographer born in Karlovy Vary, Austria-Hungary.

Letter from an Unknown Woman is a 1948 American drama romance film released by Universal-International and directed by Max Ophüls. It was based on the 1922 novella of the same name by Stefan Zweig. The film stars Joan Fontaine, Louis Jourdan, Mady Christians, and Marcel Journet (actor).