AFI SILVER THEATRE AND CULTURAL CENTER Silver Spring, Maryland
Masking Presets. In addition to the common formats, the projectionist may manually set the maskings as needed for special performances or if the masking stops have drifted. The “wall” refers to the Art Deco panels on either side of the screen which move apart for wider ratio movies. Maskings (and sound) may also be programmed to change when the next projector (film or video) opens its douser.
December 2009 photo from the Steve Guttag collection.