Ernst Plank started in 1866 producing various tin toys and, among these, kinds of Camera Obscura and Laterna Magica. With their experience in mechanical and optical devices they became over the years an internationally renowned specialist for slide and movie projectors. Here is one of the most sophisticated machines for the Normal-8 format issued only a short time before the start of Super-8.
Manufacturer: Ernst Plank K.G., Nuremberg, Germany
Solid body in cast aluminium, 2 shaded grey enamel.
Lens: Isco-Kiptagon 1,3 / 15mm
Bulb: 12V, 100W, Ba15s
Frame rate: approx. 8 to 24 fps, the precise rate of 16 fps defined through a strobe.
Forward, backward and still image review.
And now the real goody for those who wanted to make sound movies: the built in synchronizing device "Synchromat". For the first time a tape recorder and a projector built a real master-slave system. This Synchromat did not simply synchronize the speed during playback but also stopped the projector and let it go backwards. The projector always followed the audio tape. This way it was really easy to create a decent soundtrack, starting over and over again until the result was satisfactory. And tape recorders already produced good audio quality (even stereo) in the 1960s, far better than that recorded on the sound stripe of 8mm films.