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Mamiya 180mm f/4.5 Sekor C Lens for RB67 {77}

Model #235350
  • $80.00

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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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$80.00
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Mamiya 180mm f/4.5 Sekor C: medium format reach for the RB67

The 180mm focal length on the RB67's medium format frame produces a field of view well suited to subject isolation and flattering compression. At f/4.5, the maximum aperture gives you enough light to work in mixed conditions, and the 77mm filter thread means standard circular polarizers and ND filters drop right in without adapters.

The Sekor C designation places this lens within Mamiya's RB67 optic family, designed specifically for that system's rotating back and bellows-driven close focus. Portrait photographers will find the focal length and rendering particularly well matched to head-and-shoulder framing at comfortable working distances. Those shooting in the studio will appreciate how the lens slots into an established, mechanically straightforward workflow.

For the investment, you're getting medium format glass at a price point that reflects the used market's maturity around this system. The RB67 ecosystem has been thoroughly vetted by decades of commercial and editorial photographers, and this lens represents one of the more useful focal lengths in that lineup.

Who It's For

Portrait photographers who want a longer working distance between themselves and their subject will find the 180mm framing on medium format keeps things natural and unforced. Still-life and product shooters working in controlled light benefit from the 77mm filter thread and the focal length's compression. Film photographers building out an RB67 kit get a lens that fills the gap between shorter standard options and longer telephoto reach. Documentary photographers shooting on medium format film who need a reliable, mount-native optic without electronics in the signal path will find the Sekor C a practical choice.

Key Features

  • 180mm focal length for medium format subject isolation and compression
  • f/4.5 maximum aperture for mixed-condition studio and outdoor shooting
  • 77mm filter thread accepts standard circular polarizers and ND filters without adapters
  • Mamiya RB67 mount with rotating back and bellows-driven close focus
  • Proven Sekor C optics built into established RB67 mechanical workflow

FAQ

What mount does this lens use?
Mamiya RB67 mount. It's designed specifically for that system's rotating back and bellows-driven close focus.
What filter size does the 180mm Sekor C accept?
77mm. Standard circular polarizers and ND filters thread on directly without adapters.
Is the 180mm a portrait lens for the RB67?
Yes. The focal length and rendering work well for head-and-shoulder framing at comfortable working distances, and the f/4.5 aperture provides enough light for mixed-condition shooting.
How does the 180mm focal length compare to other RB67 optics?
It sits in the telephoto range of the RB67 lens lineup, delivering subject isolation and flattering compression on the medium format frame.
What's the maximum aperture?
f/4.5. That's enough light to work in studio setups and outdoor conditions without stopping down excessively.
Why choose the Sekor C designation over other Mamiya RB67 lenses?
The Sekor C identifies this lens as part of Mamiya's RB67 system optics. The RB67 ecosystem has been thoroughly vetted by decades of commercial and editorial photographers, and this focal length represents one of the more useful options in that lineup.
SpecificationValue
Focal Length180mm
Max Aperturef/4.5
MountMamiya RB67
Filter Thread77mm

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 77mm
Focus Type Manual focus (only)
Lens Mount Mamiya RB
Lens Type Short Tele / Portrait
Max Focal Length 180mm
Min Focal Length 180mm