flametitan said:
Being that they used both Vistavision and Technirama, and I assume a third camera for non effect shots, I wonder how hard it was to mix the negatives, seeing that to my knowledge you’d have three different anamorphic scales for the shots.
VistaVision and Technirama are, for all intents and purposes, the same format (35mm, 8 sprockets wide, vertically loaded - exactly like a 35mm still camera). I seriously doubt they used the Technirama anamorphic lens and instead used a normal aspherical lens. The anamorphic system is quite poor for analog special effects work because of the reduced depth of field, the soft edges and the anamorphic squeeze being inconsistant across the frame. All it does is introduce more errors in your work flow.
They more than likely filmed all of the special effects shots and composited them using the flat 8 sprocket format, then cropped the top and bottom, added a 2x squeeze and printed it to 4 sprocket anamorphic 35mm.