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Mamiya M645 Pro TL Medium Format Camera Body

Model #283198
**Lens not included
  • $322.00

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New in box complete with manufacturer's USA warranty. Not previously owned or used.
Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
EX Excellent
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$322.00
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Mamiya M645 Pro TL: the modular 6x4.5 workhorse that built careers.

The M645 Pro TL sits at the top of Mamiya's 645 film system, a camera built around the logic that professional medium format work demands interchangeable everything. Backs, finders, and grips all swap out, letting you configure the body around the job than the other way around. The 6x4.5cm negative gives you a frame roughly 2.7 times the area of 35mm, which translates directly into finer grain, smoother tonal gradations, and more latitude when printing large.

The Mamiya 645 lens mount opens the door to one of the strongest optics lineups ever assembled for a 645 system. Sekor C and later Sekor A lenses cover focal lengths from wide architectural work through long portrait glass, with leaf shutters built into many lenses for clean flash sync at any speed. The Pro TL also accepts a TTL metering prism, which changed how studio and location photographers approached this format, no more handheld meter as a constant companion.

At a moment when medium format digital backs cost more than most cars, shooting a proven 645 film system on quality glass remains one of the most cost-effective ways to work at this negative size.

Who It's For

Studio portrait photographers get a modular back system that lets them run multiple film stocks or switch to a Polaroid back mid-shoot without breaking rhythm. Wedding photographers drawn to film will appreciate leaf-shutter lenses that sync with strobes at speeds a focal-plane shutter can't match. Landscape shooters who print large will find the 6x4.5cm negative holds detail that 35mm simply can't. Photographers entering medium format film for the first time get a body with real metering support through TTL prism finders, lowering the barrier to working this format seriously.

Key Features

  • Mamiya 645 mount accepts Sekor C and Sekor A lens lineup
  • Interchangeable film backs, viewfinders, and grips for modular configuration
  • TTL metering prism option eliminates handheld meter dependency
  • 6x4.5cm negative format delivers 2.7x more area than 35mm
  • Leaf shutters in many Sekor lenses enable flash sync at all speeds
  • Professional medium format system at fraction of digital back cost

FAQ

What makes the M645 Pro TL different from earlier Mamiya 645 models?
The Pro TL adds a TTL metering prism option and refined ergonomics, but the core difference is the modular design - backs, finders, and grips swap freely, so you configure the body to match the shoot rather than fighting a fixed setup.
Can I use older Mamiya 645 lenses on the Pro TL?
Yes. The mount accepts both Sekor C and Sekor A lenses across the entire focal range, though Sekor A glass offers improved coatings and some additional focal lengths.
What's the practical advantage of 6x4.5 over 35mm film?
The negative area is roughly 2.7 times larger, which means visibly finer grain, smoother tonal transitions, and significantly more detail when printing large - a 16x20 print from a 645 negative reads cleaner than from 35mm.
Do the lenses have built-in shutters?
Many Sekor lenses feature leaf shutters, which let you sync flash at any speed rather than being locked to a camera sync speed - critical for location work and studio fill flash.
Is TTL metering essential for the M645 Pro TL?
No, but the optional TTL prism removes the need to constantly reference a handheld meter during sessions, speeding up location and studio work considerably.
How does this system compare in cost to digital medium format?
Film is negligible compared to the entry cost of a digital medium format back, which easily exceeds $30,000 - a complete M645 Pro TL body and quality glass setup costs a fraction of that.
SpecificationValue
SensorMedium Format (6x4.5cm)
ResolutionNone
MountMamiya 645

This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.

Brand Name Mamiya
Flash System Mamiya TTL (Film Cameras)
Focus Type Manual focus (only)
Lens Mount Mamiya M645