ABSTRACT
With the introduction of the Nagra recorder it became possible to record high-quality audio on location and synchronize this with the pictures. Prior to this, the audio tracks were recorded on stripe film: 16 mm film with a magnetic stripe down each. One stripe was used for the recording; the other was a balancing stripe on the other side to even out the film path and help winding on to the spool. Slung underneath the camera, or integrated within it, was a set of audio recording heads; the recordist used an external preamplifier/mixer to record onto the tracks. This system recorded the tracks in sync with the pictures, but required careful setting of the film loop within the camera.
