Here is one of the cameras that shoot 65mm film.
70mm Cinerama releases were projected with special optics onto a deeply-curved screen in an attempt to mimic the effect of the original 3-strip cinerama process.
HI FI Stereo 70(also known as Triarama and Stereovision 70) was a 3-D process.(1) Two anamorphic images,one for each eye,were captured side by side on 65mm film.(1) Aspecial lens on a 70mm projector added polarization and merged the two images on the screen.(1) A similar Soviet system known as Stereo 70 did not employ anamorphics,resulting in an aspect ratio of 1.37:1.[2]
This is a few tidbits on 65mm and hope this gives some insight.
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