Mamiya 645

Mamiya 645 Manual Focus System

Mamiya 645 manual focus cameras

First Generation

• The M645 was manufactured from 1975 to 1987. This was the first model to offer a 6x4.5 cm frame, allowing 15 shots on a standard 120 roll film. The M645 was a true system camera, with interchangeable viewfinders and lenses. It used an electronically controlled cloth focal plane shutter offering speeds of 8 seconds to 1/500 second in one-stop increments. The camera featured a mirror lockup, as well as selectable multi-exposure. Film was carried in cartridges that could be pre-loaded, but no capability existed to allow changing of film magazines mid-roll. A waist-level non-metered finder was available, as well as a non-metered pentaprism and three varieties of through-the-lens metered prisms. The metered prisms read the aperture dial through a mechanical coupling on the lens. The standard lens was the 80mm f/2.8 C or the 70mm f/2.8 C E or the 80mm f/1.9 C.
• The M645 1000S was manufactured from 1976 to 1990. This camera added a 1/1000 second shutter speed to the M645, as well as a self-timer and a depth-of-field preview lever. The standard lens was the 80mm f/2.8 C or the 80mm f/1.9 C.
• The M645J was manufactured from 1979 to 1982. This was a stripped-down version of the M645, with the mirror lockup knob and second shutter button removed. The standard lens was the 80mm f/2.8 C or the 80mm f/1.9 C.

  Second Generation

• The Mamiya 645 Super was manufactured from 1985 to 1993. This was a new camera with a molded plastic shell on a diecast metal frame. Its features are the same as the M645 1000s, but it added removable film backs, whereby a dark-slide could be inserted and the back removed mid-roll. The standard lens was the 80mm f/2.8 N, or the 80mm f/1.9 C or the 80mm f/1.9 N.
• The Mamiya 645 Pro was manufactured from 1993 to 1998. It added a self-timer and a smoother styling. The standard lens was the 80mm f/2.8 N or the 80mm f/1.9 N.
• The Mamiya 645 Pro-TL was manufactured from 1997 to 2006 and is functionally similar to the 645 Pro but adds through-the-lens flash metering. The standard lens was the 80mm f/2.8 N or the 80mm f/1.9 N.
• The Mamiya 645E was manufactured from 2000 to 2006. This was an entry-level version of the M645 Pro without switchable backs or viewfinders. It did have a light meter built in to the viewfinder, however. The standard lens was the 80mm f/2.8 N or the 80mm f/1.9 N.

Mamiya 645 Manual-Focus Lenses

Lens abbreviations

• A or APO — the lens has an apochromatic design
• C — the lens is stamped “Sekor C” on the lens barrel. All manual-focus lenses for Mamiya 645 are Sekor C lenses, which Mamiya used to designate multi-coated lenses.
• E — only for the 70mm f/2.8 E lens sold as a kit with the original M645, apparently late in the M645's production run to differentiate it from the leaf-shutter version.
• Macro — the lens is optimized for close focusing and close-up photography
• N — the lens has a "new" cosmetic design. "N" lenses were launched with the second generation manual-focus cameras. Many "N" lenses are the same as their prior "C" or "S" lens version, but have changes to the lens coatings and a plastic aperture ring instead of metal. Some "C" lenses received a cosmetic update but were not otherwise changed and did not receive a "N" marking, such as the 50mm f/4.5 and 500mm f/5.6. "N" lenses may also be called "CN" lenses.
• N/L — the lens has the "new" cosmetic design and an integrated Leaf Shutter. When used with the optional power drive WG-401 on second generation bodies, the leaf shutters are automatically cocked. On first generation bodies, or without the power drive, the leaf shutters must be cocked manually.
• S — the lens is a revised version of a "C" lens. The only lenses with "S" versions are the 45mm f/2.8 and 55mm f/2.8, but other accessories have "S" versions, including the Waist-level Finder W, the Prism Viewfinder PD, and the #3 extension tube. Early "S" lenses may have gold "S" stickers on them, while later "S" lenses may have the "S" engraved. "S" lenses may also be called "CS" lenses.
• SF — the lens has a separate control ring to create a Soft Focus effect.
• ULD — the lens has “ultra low dispersion” glass in its design
• Zoom — the lens has a variable focal length

  Lens table

Mamiya 645 Manual Focus Accessories

Viewfinders — First Generation

Viewfinder Accessories — First Generation

• Focusing screen No. 1 — microprism
• Focusing screen No. 2 — matte
• Focusing screen No. 3 — checker/grid
• Focusing screen No. 4 — rangefinder spot
• Focusing screen No. 5 — rangefinder spot with microprism - Standard on most models
• Magnifier for P, PD, PD S, CdS viewfinders
• Right-angle finder for P, PD, CdS viewfinders
• Right-angle finder 2 for P, PD, PD S, CdS viewfinders
• Diopter corrections for P, PD, PD S, CdS viewfinders
• Diopter corrections for W viewfinder

  Film inserts — First Generation

• 120 film insert
• 220 film insert

  Grips and Auto-winders — First Generation

• Pistol rubber handgrip with no shutter trigger
• Pistol plastic handgrip with shutter trigger
• Power drive grip with shutter trigger — provides automatic film advance
• Standard L-grip with no shutter trigger
• Deluxe L-grip with shutter trigger and accessory shoe
• Flash gun adapter
• Film advance knob or crank

  Other accessories — First Generation

• Extension tube #1 - 11.8mm
• Extension tube #2 - 23.6mm
• Extension tube #3, Extension tube #3S - 35.4mm
• Auto macro spacer 2x - when used with 80mm f/4 Macro lens, increases magnification from 1:2 to 1:1
• Auto bellows
• Balloon bellows
• Slide copier attachment and slide carriers
• Focus handle
• Reversing ring RS58 for bellows
• Reversing ring RS67 for bellows
• Tripod quick-shoe system
• Lens filters and hoods
• Bellows-style lens hood
• Hand and neck straps
• Aluminum traveling case branded with Mamiya logo, and smaller leather cases
• Adapter ZE