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Mamiya Sekor C 80mm f/2.8 N Manual Focus Lens for 645 {58}
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$362.00
Mamiya 645's standard lens, built for medium format work.
The 80mm f/2.8 N is the natural starting point for any Mamiya 645 system. On the 645 format, 80mm sits right at the classic normal focal length, giving you a field of view close to how the eye reads a scene. At f/2.8, there's enough light-gathering to work in dim interiors or open shade without pushing to the edges of what the format will tolerate, and the shallow depth-of-field potential that comes with medium format glass at this aperture is real, not the compressed rendering you get from smaller sensors.
Manual focus keeps the operation deliberate, which suits the measured pace that medium format shooting tends to demand anyway. The 58mm filter thread is a practical size, easy to fit with polarizers or ND glass without spending heavily on large-diameter accessories. As a normal lens for the 645 system, this focal length covers an enormous range of subjects without demanding that you reframe your thinking each time you pick it up.
For anyone building or expanding a Mamiya 645 kit, the 80mm f/2.8 N is the lens you reach for most days.
Who It's For
Portrait photographers working with the Mamiya 645 system get a focal length that flatters faces without compressing distance unnaturally, paired with f/2.8 to separate a subject from its background on medium format film or digital back. Studio still life shooters benefit from the normal perspective that avoids the distortion of wider options. Film photographers shooting 645 medium format who want a single lens that handles street, travel, and documentary work will find 80mm covers most situations without a bag full of primes.
Key Features
- 80mm focal length optimized for Mamiya 645 medium format
- f/2.8 maximum aperture for shallow depth-of-field
- Manual focus operation for precise control
- 58mm filter thread for practical accessory compatibility
- Sekor C optical design with proven reliability
FAQ
- What focal length is the 80mm on Mamiya 645, and how does it compare to full-frame?
- On 645 format, 80mm is the standard normal lens, equivalent to roughly 50mm on full-frame - it reads scenes the way your eye naturally sees them without distorting perspective.
- Can you use autofocus with this lens?
- No, the 80mm f/2.8 N is fully manual focus, which aligns with the deliberate pace of medium format shooting and keeps the mechanical design simple and durable.
- What filter size does it accept?
- The lens uses a 58mm filter thread, a practical size that keeps accessory costs reasonable compared to larger-diameter medium format glass.
- Is f/2.8 fast enough for available light work in medium format?
- Yes. At f/2.8 on 645, you get usable shallow depth-of-field and enough light transmission to work indoors or in shade without excessive film speed demands.
- Does this lens work with all Mamiya 645 camera bodies?
- The 80mm f/2.8 N mounts to any Mamiya 645 body with the standard 645 mount - compatibility is universal across the system.
- What makes this the "standard" lens for 645?
- At 80mm, the angle of view matches how most people frame scenes on 645 - wide enough for environmental portraits and interiors, tight enough for strong composition without cropping mentally.
| Specification | Value |
|---|---|
| Focal Length | 80mm |
| Max Aperture | f/2.8 |
| Mount | Mamiya 645 |
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 | Manual focus (only) |
| Lens Mount | Mamiya M645 |
| Lens Type | Standard / Normal |
| Max Focal Length | 80mm |
| Min Focal Length | 80mm |
