The OT and TPM were both shot on film. But film is not like digital in that the cameras don't really matter; they don't determine what the picture looks like. With digital, the sensor is in the camera and this determines what the image will look like and the characteristics it has, but film cameras are really nothing but motors to run the film through. It is the lens and film stock that determines the image characteristics instead. So using the same cameras wouldn't mean anything except that they are shooting on film; TPM was shot on film and it didn't make a huge difference. Part of the reason is because each shot is digitally scanned and digitally altered with so much CG.