The first in the series of the Auto Bellows lenses. Rokkor lenses offer Minolta's exclusive Achromatic Coating. Designed with a short mount and no focusing ring for use with the Auto Bellows 1. The focusing range with this bellows is all the way from infinity to 1:1. This lens' relatively great focal lenght enables greater lens-to-subject distance, with resulting greater freedom in placement of lighting equipment. It's automatic diaphragm operation facilitates focusing and viewing up to and after the moment of exposure. Little noticeable differance between this early lens and the Rokkor-X version.