A three-projector process opened at one New York theater in 1952

The image

The subject is 'This Is Cinerama,' the 1952 film that introduced the three-projector Cinerama process, added to the National Film Registry and documented in a registry essay by film historian Kyle Westphal for the Library of Congress. The film played in the United States at only one venue, the Broadway Theatre in New York City, according to the essay, and became, in that single-theater run, the highest-grossing film of 1952. A companion catalogue record at the George Eastman Museum lists a 'Cinerama 35mm Projector Head,' dated 1951 and made by Cinerama Inc., among its own holdings, alongside prints from the later Cinerama-branded releases the format's name was applied to through the 1960s.

What the documents show

The essay states the mechanism directly: Cinerama used three 35mm projectors running simultaneously to present a triptych image 'across a deeply curved, 146-degree screen that surrounded the audience,' with the seams between the three projected panels 'always evident.' Sound was delivered as seven channels carried on a fourth strip of 35mm magnetic film, and the picture ran at 26 frames per second, faster than the 24-frame sound standard, with each frame six perforations tall. The essay credits inventor Fred Waller with developing Cinerama from his earlier Vitarama, a multi-projector system built for World War II artillery training, distinguishing Cinerama's origin from a purely theatrical invention.

Production context

Editorially, retrofitting a theater for three-projector Cinerama was expensive enough, employing as many as seventeen union projectionists at the Broadway Theatre alone per the essay, that the format never scaled beyond a handful of venues even at its commercial peak, which is why the essay notes it can still be seen today at only three venues worldwide: the National Media Museum in Bradford, England, the Cinerama Theatre in Seattle, and Hollywood's Cinerama Dome. That scarcity is itself part of the documented record, not an inference.

Reference versus imitation

A production or historical reference that calls something 'shot in Cinerama' without the three-camera, three-projector, seamed-triptych mechanism the essay describes is using the name loosely; the format's own defining feature, per the record, was the visible seam between panels, the opposite of the seamless single-frame widescreen that later processes like CinemaScope achieved with one projector. Crediting the format accurately means naming Waller, the three-projector mechanism, and the single-theater 1952 debut the Library of Congress essay documents, rather than treating 'Cinerama' as a generic synonym for early widescreen.

• Does the reference distinguish a true multi-projector process from a single-projector widescreen format?
• What specific theater and release pattern does the primary record document?
• Whose invention, and under what earlier use, does the cited essay credit?

The surviving essay and the museum's own projector-head catalogue record agree on the same physical mechanism, giving the format a documented, if geographically narrow, footprint rather than a vague widescreen legend.