A partition that separates the two halves of a stereo camera, so that light from the left lens does not reach the right part of the negative (and vice-versa).
Septum
Antiques from the collection of André Ruiter
Antiques from the collection of André Ruiter
A partition that separates the two halves of a stereo camera, so that light from the left lens does not reach the right part of the negative (and vice-versa).