Question: Which director is known for producing Christian films: Sidney Lanfield or Rich Christiano?
Context: The Christian Worldview Film Festival is a film festival located in San Antonio, Texas.  It showcases films made by professional and student filmmakers that reflect a Christian worldview.  The Christian Worldview Filmmakers Guild is also run in conjunction with the festival.  The guild includes a variety of speakers from the Christian film industry including Rich Christiano, Stephen Kendrick, Bobby Downes, John Fornof, Rich Swingle, Daniel Knudsen and Mimi Sagadin. The Secrets of Jonathan Sperry is a 2008 Christian film, released to theaters on September 18, 2009.  It was directed by Rich Christiano, and the majority of the film was filmed in Holley, New York, beginning August 18, 2007.  Its world premier was at the Merrimack Valley Christian Film Festival.  Gavin MacLeod, who also starred in "The Love Boat" and "The Mary Tyler Moore Show" plays the lead role in the film. A Matter of Faith is a 2014 American Christian drama film directed by Rich Christiano and starring Harry Anderson, Jordan Trovillion, Jay Pickett, and Clarence Gilyard.  The film was released into theaters on October 17, 2014 by Five & Two Pictures.  The film follows a Christian student (Jordan Trovillion) and her father (Jay Pickett) who are challenged by a Biology professor who teaches evolution. Unidentified is a 2006 science fiction Christian film produced by Rich Christiano and Alvin Mount.  It was written and directed by Rich Christiano and stars Jonathan Aube, Josh Adamson, Michael Blain-Rozgay, Jenna Bailey, Lance Zitron, and the popular Christian pop rock musician Rebecca St. James, starring in her first film.  The film deals with UFOs and how they could possibly play into the end times. Rich Christiano (born October 2, 1956) is an American filmmaker, who has directed, produced and written many Christian films.  He owns Christiano Film Group, co-founded Five & Two Pictures and founded ChristianMovies.com in 1997.  He is also the brother of Dave Christiano. Sidney Lanfield (April 20, 1898 – June 20, 1972) was an American film director known for directing romances and light comedy films and later television programs. Five & Two Pictures is an independent Christian film production company founded in 2002 by Dave Christiano and Rich Christiano.  They have produced several Christian feature films; "Time Changer", "Unidentified", "Me & You, Us, Forever", "The Secrets of Jonathan Sperry" and "A Matter of Faith". Dave Christiano (born October 2, 1956) is a Christian filmmaker and twin brother of Rich Christiano.  He owns Dave Christiano Films and ChristianFilms.com.  Several of Christiano's films have been released to theaters. Time Changer is an independent science fiction Christian seriocomic film written and directed by Rich Christiano, released by Five & Two Pictures in 2002.  In the movie, Dr. Norris Anderson (Gavin MacLeod) uses his late father's time machine to send his colleague, Bible professor Russell Carlisle (D. David Morin), from 1890 into the early 21st century.  The film had a limited nationwide release, and was made available on VHS, DVD and video-on-demand. Second Glance is a 1992 Christian drama film directed by Rich Christiano.  It is one of the Christiano Brothers' films to be viewable on Sky Angel's "Video On Demand" service, announced in 2008.  The film follows the story of a young Christian, Daniel (David A. R. White), and his great internal conflict at home and in a public high school.
Answer: Rich Christiano