Welcome to keh.com!
Theme gray image

Mamiya 500mm f/8 Sekor Lens for RB67 {105}

Model #363884
  • $448.00

Select Gear Grade
Our Grading System
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
With Caps
$448.00
Only 1 left!
Free 180 Day warranty on all purchases
FREE SHIPPING OVER $75 + FREE 21-DAY RETURNS
Talk with an expert:
1-800-342-5534

Mamiya RB67 500mm f/8 Sekor: medium format reach for serious work.

A 500mm lens on the RB67 system is a commitment, and Mamiya built this Sekor knowing exactly who would pick it up. At f/8, you're working with a fixed maximum aperture that demands good light or a willingness to push your film, but the trade-off is a telephoto that brings medium format resolving power to subjects at distance. On the RB67's 6x7cm negative, a 500mm delivers a field of view and subject isolation that no 35mm telephoto can match in terms of raw film area.

The RB67 mount means full mechanical integration with the rotating back system, so you can shift between portrait and landscape orientation without repositioning your tripod head. That matters when you're working at long distances and have a composition locked in. This is a manual-focus, slow-aperture lens built for deliberate, tripod-mounted shooting where you're taking your time to get the frame exactly right. Photographers who put in that kind of work get medium format quality at a focal length most shooters never bother to attempt on roll film.

Who It's For

Wildlife and nature photographers shooting on medium format film who want genuine reach without abandoning the 6x7cm negative will find a clear purpose here. Portrait photographers working at extended distances, such as environmental portraits where subject-to-camera separation matters, benefit from the focal length's compression on a large film plane. Sports or event photographers willing to work with a tripod and deliberate timing can extract detail from a 6x7 frame that no 35mm system at this distance can approach. Any RB67 shooter building out a specialized kit for controlled, long-distance work belongs in this conversation.

Key Features

  • 500mm focal length for medium format telephoto reach
  • f/8 fixed maximum aperture optimized for resolving power
  • Mamiya RB67 mount with rotating back integration
  • Manual focus for deliberate, precision composition
  • Sekor optics for medium format film systems

FAQ

What field of view does a 500mm lens give on the RB67?
On the RB67's 6x7cm negative, the 500mm delivers significant telephoto reach with subject isolation that 35mm systems cannot match in terms of total film area captured.
Is this lens suitable for handheld shooting?
No. The f/8 fixed aperture and manual focus design make this lens built for tripod-mounted work where you have time to compose and focus deliberately.
Can you change from portrait to landscape orientation without moving the tripod?
Yes. The RB67 mount integrates with the rotating back system, so you can shift orientations while keeping your tripod and composition locked in.
What lighting conditions do you need to shoot with an f/8 maximum aperture?
You need strong, consistent light, or you'll need to push your film speed in post-exposure. The trade-off for the fixed aperture is a telephoto design optimized for medium format resolution.
Is this a modern autofocus lens?
No. This is a manual-focus lens built for deliberate shooting where you control every aspect of focus and framing.
What type of photography is this lens designed for?
Long-distance subjects where medium format quality and resolving power matter more than speed or convenience-portraiture, wildlife, and architectural work from distance.
SpecificationValue
Focal Length500mm
Max Aperturef/8
MountMamiya RB67

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
Focus Type Manual focus (only)
Lens Mount Mamiya RB
Lens Type Telephoto / Long
Max Focal Length 500mm
Min Focal Length 500mm