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Mamiya 80mm f/2.8 Sekor D Autofocus Lens for 645AFD Digital Series, Phase One {67}

Model #229110
  • $365.00

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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.
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$365.00
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Mamiya's standard AF lens for medium format 645 systems

The 80mm focal length on a 645 frame sits in roughly the same visual territory as a 50mm does on 35mm film, making it the lens portrait and editorial shooters reach for when they want natural perspective without distortion. At f/2.8, there's enough subject separation to isolate a face cleanly against a studio backdrop or a field, and the Sekor D optical design was built with the demands of medium format image quality in mind.

This lens mounts to Mamiya 645AF bodies and is also compatible with Phase One digital backs and bodies that share the 645AF mount, which makes it a practical choice for shooters working across both film and digital medium format workflows. The 67mm filter thread is a standard size, so existing circular polarizers and ND filters from other kits carry over without adapters.

For anyone already invested in the 645AF system, the 80mm f/2.8 is the lens that lives on the camera most of the time. It's the workhorse focal length of the format, and having autofocus in a medium format standard lens changes the pace of a shoot considerably.

Who It's For

Portrait photographers who shoot with Mamiya 645AF or compatible Phase One bodies will find the 80mm focal length and f/2.8 aperture well-suited to controlled studio sessions and natural-light work alike. Documentary and editorial photographers benefit from the autofocus capability, which changes how quickly a medium format kit responds on location. Film shooters working with 645AF bodies get a standard lens with AF that keeps pace with faster-moving subject work. Anyone already using the 645AF mount who needs a reliable, moderate telephoto equivalent for the format.

Key Features

  • 80mm fixed focal length with f/2.8 maximum aperture
  • Mamiya 645AF autofocus mount
  • Sekor D optical design for medium format
  • Compatible with Phase One digital backs and bodies
  • 67mm filter thread for standard accessories

FAQ

What's the effective focal length of the 80mm f/2.8 on a 645 frame?
On 645 format, 80mm delivers roughly the same angle of view as a 50mm lens on 35mm film, making it the natural standard focal length for the system.
Can I use this lens on Phase One digital backs?
Yes. The 80mm f/2.8 is compatible with Phase One bodies and digital backs that use the 645AF mount.
What aperture does this lens open to?
f/2.8, which provides enough subject separation for portraiture and allows meaningful subject isolation in studio and outdoor work.
What filter size does the 80mm f/2.8 use?
67mm. Standard circular polarizers and ND filters from other kits will mount directly without adapters.
Does this lens have autofocus?
Yes. Autofocus is built in and works with compatible 645AF camera bodies.
Is the 80mm f/2.8 designed for both film and digital?
The Sekor D optical design was built for medium format image quality and works across both Mamiya 645AF film bodies and Phase One digital systems on the same mount.
SpecificationValue
Focal Length80mm
Max Aperturef/2.8
MountMamiya 645AF
Filter Thread67mm

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
Filter Size 67mm
Focus Type Autofocus (camera motor)
Lens Mount Mamiya 645AF & Phase One
Lens Type Standard / Normal
Max Focal Length 80mm
Min Focal Length 80mm