This is an evolution of the Mamiyaflex C22.
 6X6 cm format camera, using 120 or 220 films with interchangeable lenses, rather of professional use and especially dedicated to studio portraits.
The originality of the system is that shooting and viewing  lens are both installed on the same supporting plate, and it is this plate that is interchangeable.
In addition, the shutter is also mounted on the same plate, behind the shooting lens, which means that each lens becomes an optical / shutter block, thus making the interchangeability much more expensive ...
The lens plate is mounted on a sliding support system on a long rail, with two knobs for focusing. Note that there are two bellows, a large bellows protecting both the sighting and shooting chambers, as well as a smaller bellows, itself inside the large one, for the shooting chamber!!!!! Thanks to the locking system of a hatch, this system allows the optics to be changed while preserving from the external light to ingress as much as possible.
The standard lens is a 80 mm opening at 1: 2.8 and combined with a Seiko shutter from 1 sec to 1 / 500th of a second and bulb exposure. According to the evolutions, the lenses have undergone some changes, in particular regarding the diaphragm, the ring of which becomes notched. The last version is recognizable at the blue dot on the cocking button.
The lens ranges goes from 55 mm to 250 mm through 65, 80, 105, 135, 180 mm, ensuring a large coverage.
All these optics are coupled to the same type of Seiko shutter as that mounted on the standard 80 mm.
The chrome lenses are the oldest while the black versions are the latest.
The 220 is the version with the characteristics of the C, without evolving like the C330. There was a 220F, ultimate variant with bigger film winding button.
The ground glasses are not interchangeable, the film is wound using a small crank, the backs are not removable, the cocking is directly on the lens block and there is only one trigger on the camera.
The camera case is simpler, more compact and therefore a little less heavy than for a C330. Nevertheless, it remains difficult to use it for the photo reportage and action given its limited ergonomics and its weight.