Mamiya Sekor C N 150mm f/3.5 Lens
The Mamiya 150mm f/3.5 is a 150mm f/3.5 lens designed for Mamiya 645 mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Mamiya Sekor C N 150mm f/3.5 Lens
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Lens Overview — Mamiya 150mm f/3.5
Key Features — Mamiya 150mm f/3.5
150mm Telephoto Prime: Equivalent to a short telephoto on medium format, ideal for portraits and studio work with comfortable subject distance.
Mamiya 645 Mount: Native mount for the Mamiya 645 system ensures direct, adapter-free compatibility with all cameras on that platform.
f/3.5 Maximum Aperture: Wide enough for meaningful depth-of-field control and background separation in medium format telephoto work.
Manual Focus Design: Full tactile control over focus placement suits the deliberate, measured pace typical of medium format shooting.
Medium Format Coverage: Image circle designed for the 645 format, delivering full-frame coverage with no vignetting on Mamiya 645 bodies.
67mm Filter Thread: A widely available filter size that makes sourcing polarizers, ND filters, and other accessories straightforward.
Lens Specifications — Mamiya 150mm f/3.5
| Spec | Detail |
|---|---|
| Use Cases | Portrait, Studio, Product |
| Lens Type | Prime |
| Format | Medium Format |
| Zoom/Prime | Prime |
| Focal Length | 150mm |
| Maximum Aperture | f/3.5 |
| Camera System | Medium Format |
| Lens Mount | Mamiya 645 |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 67mm |
Description — Mamiya 150mm f/3.5
The Mamiya Sekor C N 150mm f/3.5 is a prime lens designed exclusively for the Mamiya 645 mount, placing it firmly in the medium format category. With a 150mm focal length in the telephoto range, this lens delivers the reach and perspective compression that portrait and studio photographers typically look for. Its f/3.5 maximum aperture gives you meaningful control over depth of field, letting you draw focus to your subject while managing background rendering.
Focus is manual only, consistent with the deliberate, hands-on workflow that medium format photography rewards. The 67mm filter thread accommodates a wide range of widely available filter accessories, from polarizers to neutral density glass. At 700g, the lens carries a reassuringly solid feel without being unwieldy.
There is no image stabilization, so steady technique or appropriate support is recommended when shooting at slower shutter speeds. For photographers working within the Mamiya 645 ecosystem who need a reliable telephoto prime for controlled shooting environments, the Sekor C N 150mm f/3.5 is a purpose-built, mount-native option worth serious consideration.
Pros — Mamiya 150mm f/3.5
- ✓150mm telephoto focal length on the Mamiya 645 mount is well-suited for portraits and studio photography
- ✓f/3.5 maximum aperture provides meaningful depth-of-field control for a medium format telephoto prime
- ✓Dedicated Mamiya 645 mount ensures native, direct compatibility with that camera system
Cons — Mamiya 150mm f/3.5
- ✗Manual focus only — no autofocus support, which may slow down shooting in dynamic or fast-moving situations
- ✗No image stabilization, requiring careful technique or adequate shutter speeds when shooting handheld
- ✗Mamiya 645 mount limits use to that specific camera system without additional adapters