Cinerama camera

[Phil Rhodes]

Last week, I found myself at the ASC clubhouse in Hollywood, and noticed that among the fascinating exhibition of historic cameras was this - a Cinerama camera!

Those lenses are under an inch in diameter and I wouldn't like to guess what the effective aperture is.

P

[Mark Dunn]

They're 27mm Ektars, purpose made for the 3-strip.

It wasn't an optically demanding application- the shutter was in front of the lenses- so they could be pretty fast.

http://www.widescreenmuseum.com/widescreen/cineramacam.htm

Edited May 9, 2023 by Mark Dunn

[David Mullen ASC]

https://www.in70mm.com/cinerama/archive/camera/index.htm

The lens apertures are set by turning a small knob located at the top of the camera between the "A" and "B" chambers. The dial is calibrated in f/stops from f/2.8 to f/22. The zero on the dial indicates the closed position of the diaphram. The diaphrams on all three of the lenses are connected to the one control and work simultaneously. This is the only means of setting the exposure on the camera unless the camera is run at some speed other than 26 frames per second.