Voigtlander Perkeo
The Voigtlander Perkeos are the smallest of the 6x6 folders. They are extremely well built and give superb results.
The Perkeo I has a Vaskar f4.5 75mm lens and a Prontor S shutter.
The Perkeo II has a Colour Skopar f3.5 75mm lens and a Syncro Compur shutter. It features a frame counter mechanism.
The Perkeo III has a Colour Skopar f3.5 75mm lens and a Prontor SVS shutter. It features an uncoupled rangefinder.