Because Erfurt, Elberback Cloister and Eltville Castle were located in Communist-held East Germany in 1953, the producers chose substitute filming locations in Western Germany. Maulbronn Cloister near Stuttgart was substituted for Erfurt. Various spots in Wittenberg substituted for other historical locations. The Wartburg Castle, the actual site where Luther translated the New Testament into German, was filmed from a distance since it was located in Communist East Germany. The Diet of Worms assembly hall had to be recreated in the studio since the real hall was destroyed in WW2.
The film was never released in Quebec, Canada. At the time, Quebec's film censorship board (made up entirely of French-speaking Catholics) refused to approve the film to be shown in Quebec's movie theaters. Therefore, it could only be shown in the basements of Quebec's Protestant churches.
Publicity for the film indicated the producers used the same original Guttenberg press which printed the first bibles. The press is on permanent display at the Mainz Museum and was used during a film montage about the spread of Luther's writings.