645 super

Used Mamiya M645 Super w/ 80mm F2.8C N


Condition: Excellent Condition


  • Type: 6 x 4.5cm electronic focal-plane shutter SLR
  • Exposure-Control Modes: AE
  • Lens Mount: M645 bayonet
  • Autofocus System: No
  • Shutter: Moving coil, quartz0controlled focal-plane shutter (Electronic:) B. 4 – 1/1000 sec. (Mechanical:) 1/60 sec
  • Metering: 3-way TTL
  • Film-speed Range: N/A
  • Mirror: Instant return reflective mirror, with mirror lock-up compatibility
  • Viewfinder: Interchangeable (Waist Level Finder N, Prism Finder N, and AE Prism Finder N)
  • Flash: Flash synchronization at 1/60 sec. or slower speeds
  • Film Advance: Single turn winding by Wind-up crank. Variable crank start postiion (6 positions.) Power drive.
  • Power: 6V battery x 1 (4SR44 silver-oxide battery of 4LR44 alkaline-manganese battery)
  • Self Timer: None
  • Dimensions: (Body with 120 Roll Film Holder:) 3.6 x 3.4 x 4.6 inches
  • Weight: 31.3 oz / 895 g

Out of stock

Product Description

The M645 Super was introduced in December 1985[1]. It represents a significant improvement upon the features of its predecessors (the original M645 and M645 1000S), in particular because of the extension of the modular construction to include removable film backs.


The camera has an electronically-timed focal-plane shutter with cloth blinds[2]. It offers speeds between 4 seconds and 1/1000 seconds, plus ‘B’, on a dial on the top right hand side of the body (the earlier M645 models offer a timed speed of 8 seconds); there are also settings for aperture-priority Automatic Exposure (AE) and AE Lock (where an AE setting from a reading of one scene may be retained for use after re-framing, as long as the shutter button is held lightly). There is also one mechanically-timed speed, 1/60 second, so that the Super can be used with an exhausted battery. It is particularly convenient that this is the flash synchronisation speed.

The shutter release is on the bottom right corner of the front of the camera body. It has a lock position, a normal operating position, a position to select the mechanically-timed speed, and a position for the delayed action.

The camera has no socket for a conventional cable release, but has an electronic socket (under the sliding cover on the side, visible in the top picture to the right). This accepts any of several external/remote release accessories: an electronic cable release, infra-red or radio-frequency wireless remote releases, or simply a plug-in adapter to allow the use of a mechanical cable release.

Film backs

As in the earlier models, 120 roll film is loaded onto a removable ‘film insert’ (essentially a pair of spool holders and a pressure plate with rollers), which makes loading film faster and more convenient than it otherwise would be (particularly for a user working with an assistant, such as a typical wedding photographer). Whereas in the earlier models, the loaded film insert is inserted into a film chamber integrated into the camera body, in the Super the film back is removable as a modular unit, allowing the user to switch between backs, and so between different types of film, mid-roll, or to pre-load a number of backs to allow very fast reloading. The 120 roll film inserts are very similar to those used in the older models (they are interchangeable). The camera also accepts backs for 220, 135 and Polaroid film. The 135 back gives a standard 24×36 mm image, and comes with a panoramic adapter, comprising a dark-slide with a cutout, giving an image 13×36 mm; a special focusing screen was supplied with it, marked for both formats. The Polaroid back is for 100- or 600-series 3¼x4¼-inch film packs (but the image is the same size as on roll film); Fuji film packs in the same size can also be used.

The film speed is set on a dial on each film back, and the backs have electronic contacts to communicate the setting to the camera body (that is, to the metering prism, if fitted). The backs have metal dark slides (the blue handle of the dark slide can be seen in the top photograph). There is an interlock to prevent the film back being removed from the camera without the dark slide, and another to prevent the shutter from releasing when there is a back attached with the dark slide inserted.


As with earlier models, several viewfinders exist for the Super and its successors. The most basic is a folding waist-level focusing hood, with an integral focusing loupe and ‘sports finder’ frame. There are also a plain (i.e. non-metering) prism finder, and two metering prism viewfinders (different generations of essentially the same item); the AE Finder N, quite angular in shape, and the more rounded FE401. Either metering finder offers three metering modes:

  • Centre-weighted average metering
  • Spot metering
  • A mode in which the program selects automatically between the average and spot readings, on the basis of the light distribution (and shows in the viewfinder which has been selected). Some Mamiya literature refers to this as a ‘matrix’ mode. There is a magnifying eyepiece for the prism finders, and an angle finder (allowing the eyepiece to be viewed from above the camera).

If the shutter speed dial is set to its Automatic Exposure or AE Lock settings, the metering prism gives aperture-priority automatic exposure. There is a ‘compensation’ dial on the metering prism, allowing the exposure to be offset from the meter reading by ±3 stops.

The focusing screen is removable, and a number of alternative screens exist. The standard screen has split-prism and microprism focusing aids, familiar to users of many contemporary 35 mm SLR cameras.


The lens mount is the same bayonet fitting as that of the earlier models. The system components list below lists the lenses available.

A number of lens accessories exist, including extension tubes, a bellows and a reversing ring. The newer lenses offer an Auto/Manual switch, which serves as a depth-of-field preview switch (there is no DOF-preview control on the camera body, unlike some of the older models).

Other features

The camera requires one PX-28 6V alkaline battery (or equivalent 4SR-44 silver oxide or 4LR44 alkaline). There is a battery check button on the bottom left corner of the front of the camera; its lamp is above the shutter release button on the bottom right.

There is a hot shoe, and a PC socket, on the left hand side of the body. Several different grips and brackets exist to extend the flash capability. There is also a manual mirror-up control on the left-hand side. There is a tripod bush on the bottom of the body; the socket is 3/8 inch, but was supplied with a 1/4 inch adapter fitted.

The film is advanced either by a winding crank or a power winder. One or the other is mounted on the right-hand side of the body. There is a multi-exposure control on the right-hand side, allowing the winder to cock the shutter without advancing the film. The power winder covers this control, so it is repeated on the base of the winder. The winder incorporates a shutter release on top of the grip. The winder requires 6 AA batteries, and has its own battery check control and lamp integrated into the shutter release[3]. The film may also be advanced using a winding knob on the side of the film back; this will not cock the shutter, however, so one or other of the winders is still needed. The dimensions given in the user’s manual, for the Super camera body and a 120 film back only, are (width × height × depth) 91 × 87.5 × 116 mm, and the weight 895g.

Accesories Included:

  • Waist Level Finder
  • 120 Film Back
  • Hand Grip
  • Neck Strap


Additional Information

Product Condition

EX+ Excellent Plus This rating of equipment is at 90 to 96 percent of original condition. Extremely nice, but close inspection may reveal slight finish wear. The glass will be very clean.


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