Technirama

right|thumb|300px|The 35 mm 8 perforation Technirama horizontal camera film. Note the circle has been squeezed horizontally by a factor of 1.5. __NOTOC__ Technirama is a screen process that has been used by some film production houses as an alternative to CinemaScope. It was first used in 1957 but fell into disuse in the mid-1960s. The process was invented by Technicolor and is an anamorphic process with a screen ratio the same as revised CinemaScope (2.35:1) (which became the standard), but it is actually 2.25:1 on the negative.

==Technical== The Technirama process used a film frame area twice as large as CinemaScope. This gave the former a sharper image with less photographic grain. Cameras used 35mm film running horizontally with an 8-perforation frame, double the normal size, exactly the same as VistaVision. VistaVision cameras were sometimes adapted for Technirama. Technirama used 1.5:1 anamorphic curved mirror optics in front of the camera lens (unlike CinemaScope's cylindrical lenses which squeezed the image in a 2:1 ratio). In the laboratory, the 8-perforation horizontal negative would be reduced optically, incorporating a 1.33:1 horizontal squeeze to create normal 4-perforation (vertically running) prints with images having an anamorphic squeeze ratio of 2:1.