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Mamiya 80mm f/2.8 AF Lens for Mamiya 645AF, Phase One {58}

Model #229109
  • $318.00

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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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With Caps
$318.00
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With Caps
$221.00
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$202.00
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With Front Filter Ring Damage
$173.00
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Surface Sticky
$165.00
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Mamiya 80mm f/2.8: The standard lens for 645AF medium format shooters.

On a 645 format body, 80mm lands close to a natural field of view, slightly long, flattering for faces, comfortable for environmental work. The f/2.8 maximum aperture gives you usable separation at medium format scale, where even moderate apertures produce a depth-of-field character that smaller formats can't match. The 58mm filter thread keeps your investment in glass affordable.

This lens covers the Mamiya 645AF mount, which means it runs on both Mamiya 645AF bodies and Phase One digital backs paired with compatible bodies. That cross-system compatibility matters if you're building or extending a kit that might migrate between film and digital capture over time. Autofocus in the 645AF system is a genuine advantage over manual-focus medium format alternatives, portrait sessions and event work move faster when you're not pulling focus by hand on every shot.

At 80mm f/2.8, this is the lens you reach for most days. It's the focal length that requires no justification.

Who It's For

Portrait photographers shooting on 645AF bodies will get the most from this lens, 80mm at f/2.8 on medium format delivers subject separation that reads differently than full-frame equivalents, with a rendering quality that comes from the larger image circle. Studio photographers working with Phase One digital back systems can run this lens natively, making it a practical choice for a hybrid film-and-digital workflow. Documentary and editorial shooters who want autofocus reliability in a medium format kit, without reaching for a specialty focal length, will find 80mm covers most situations without compromise.

Key Features

  • 80mm focal length on 645AF mount, natural field of view for portraits
  • f/2.8 maximum aperture with usable separation at medium format scale
  • Autofocus operation on 645AF film bodies and Phase One digital backs
  • 58mm filter thread for affordable accessory compatibility
  • Mamiya 645AF mount cross-system compatibility

FAQ

What's the field of view on 645 format?
80mm is slightly longer than normal on 645, landing in the flattering portrait-to-environmental range. It's the natural choice for daily work on the format.
Will this autofocus work on Phase One digital backs?
Yes. The 645AF mount runs on Mamiya 645AF film bodies and Phase One digital backs paired with compatible bodies - the autofocus function carries across both systems.
How much subject separation does f/2.8 give you on medium format?
On 645, f/2.8 produces the kind of depth-of-field character smaller formats can't reach. Even moderate apertures yield usable separation, which is one of the format's core advantages.
What filter size does this lens take?
58mm. That keeps filter investment reasonable if you're building out a 645AF kit.
Is this lens fast enough for handheld work indoors?
f/2.8 is workable indoors if your film speed (or digital ISO) is reasonable. Autofocus helps you move quickly, but you're not getting the shutter speeds you'd have with a faster prime on smaller format.
What's the difference between this and manual-focus 80mm options?
Autofocus eliminates the ground-glass focusing step on every shot. For portraits and events, that's a real productivity gain. For tripod work, it matters less.
SpecificationValue
Focal Length80mm
Max Aperturef/2.8
MountMamiya 645AF

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 58mm
Focus Type Autofocus (camera motor)
Lens Mount Mamiya 645AF & Phase One
Lens Type Standard / Normal
Max Focal Length 80mm
Min Focal Length 80mm