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Mamiya 140mm f/4.5 Sekor Macro C Lens for RB67 {77}

Model #235345
  • $89.00

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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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$89.00
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Mamiya 140mm f/4.5 Macro C: medium format macro built for the RB67.

The 140mm focal length sits in practical territory for RB67 shooters who need working distance between lens and subject. At f/4.5, you're working with a dedicated macro design than a general-purpose lens pressed into close-focus duty, and that distinction matters when you're trying to extract genuine detail from small subjects on medium format film. The 77mm filter thread gives you access to a full range of polarizers and specialty filters without step-up rings.

Medium format macro work demands discipline, and this lens is built around that reality. The RB67's rotating back pairs naturally with a lens like this, letting you reframe between horizontal and vertical without physically repositioning the camera on a copy stand or macro rail. For film photographers who have committed to the RB67 system, adding a dedicated macro lens at this focal length rounds out a working kit in a way that a standard short telephoto simply cannot.

Who It's For

Film photographers already shooting the RB67 system who want true macro capability without compromise. Product and still-life photographers benefit from the 140mm focal length's working distance, keeping the lens well clear of tabletop subjects during close-focus work. Botanical and natural history shooters gain medium format negative size at macro distances, which matters when drum-scanning or contact-printing results. Photographers doing copy work or document reproduction will find the dedicated macro design more disciplined than adapted alternatives.

Key Features

  • 140mm focal length designed for medium format macro work
  • f/4.5 maximum aperture on dedicated macro design
  • Mamiya RB67 mount system
  • 77mm filter thread for polarizers and specialty glass
  • Macro lens optimized for close-focus detail extraction
  • Works seamlessly with RB67's rotating back for composition flexibility

FAQ

What's the working distance on the Mamiya 140mm f/4.5 macro?
The verified specs don't specify minimum focus distance or working distance for this lens. Check the lens barrel or a Mamiya RB67 manual for exact close-focus performance.
Does this lens work on any other mount besides RB67?
No. This is a Mamiya RB67-specific lens and won't mount on other systems.
What size filters does the 140mm macro take?
77mm. No step-up rings needed if you already have filters in that size.
Is 140mm considered a short or long focal length for medium format macro work?
140mm on RB67 gives you practical working distance between the lens and your subject, which matters for tabletop macro work where you need room to light and position small objects without the lens casting shadows.
Can you rotate the RB67 back to switch between portrait and landscape with this lens mounted?
Yes. The RB67's rotating back lets you reframe without physically moving the camera, which is a real advantage for macro work on a copy stand.
What aperture range does this lens offer?
Maximum aperture is f/4.5. The verified specs don't list the minimum (closed) aperture.
SpecificationValue
Focal Length140mm
Max Aperturef/4.5
MountMamiya RB67
Filter Thread77mm
Lens TypeMacro

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 140mm
Min Focal Length 140mm