Mamiya 645 150mm f/3.5 Sekor C N 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 645 150mm f/3.5 Sekor C N Lens
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![Mamiya/Phase One 645AF 120mm f4 Macro MF Lens [manual focus]](https://gearfocus.b-cdn.net/lGXm9tkerwOfJcjBYTFvzRvFqlZ2/101745/101745-1779918245017.jpeg "View Mamiya/Phase One 645AF 120mm f4 Macro MF Lens [manual focus]")
Lens Overview — Mamiya 150mm f/3.5
Key Features — Mamiya 150mm f/3.5
150mm Telephoto Prime: Fixed focal length delivers a dedicated telephoto perspective equivalent to approximately 95mm in 35mm terms, well suited to portrait and detail work.
f/3.5 Maximum Aperture: Provides useful light-gathering capability for a medium format telephoto, allowing for subject separation and shooting in lower light conditions.
Mamiya 645 Native Mount: Designed exclusively for the Mamiya 645 system, fitting compatible bodies directly without the need for adapters.
Manual Focus Design: Full manual focus control suits deliberate shooting workflows common in portrait, studio, and field photography.
67mm Filter Thread: Widely available filter thread size makes it straightforward to pair with standard UV, polarizing, and neutral density filters.
Medium Format Optics: Built to cover the larger 645 medium format frame, delivering the characteristic detail and rendering quality associated with medium format systems.
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 Focus |
| Image Stabilization | None |
| Filter Thread | 67mm |
Description — Mamiya 150mm f/3.5
The Mamiya 645 150mm f/3.5 Sekor C N is a prime telephoto lens purpose-built for the Mamiya 645 medium format camera system. With a fixed 150mm focal length and a maximum aperture of f/3.5, it delivers a consistent telephoto angle of view suited to controlled shooting environments. Focusing is entirely manual, putting the photographer in direct command of the focus point — a characteristic well-suited to methodical, tripod-based work.
The lens weighs 500g, making it a reasonably portable option within the medium format telephoto category. A 67mm filter thread accepts a broad range of standard screw-in filters, adding flexibility for exposure and light control. There is no image stabilization, so stable support is recommended when shooting at this focal length.
Native to the Mamiya 645 mount, it integrates directly with compatible bodies in the system without requiring any additional adapters or modification.
Pros — Mamiya 150mm f/3.5
- ✓Fixed 150mm focal length provides a dedicated telephoto perspective with no zoom compromise
- ✓Maximum aperture of f/3.5 offers solid light gathering for a medium format telephoto prime
- ✓Mamiya 645 native mount ensures direct, adapter-free compatibility with Mamiya 645 system bodies
Cons — Mamiya 150mm f/3.5
- ✗Manual focus only — no autofocus support, which slows operation for fast-moving subjects
- ✗No image stabilization, requiring careful technique or tripod use to avoid camera shake at 150mm
- ✗Limited to the Mamiya 645 mount with no native compatibility for other camera systems
Videos — Mamiya 150mm f/3.5
Mamiya 645 – Legendary cine lenses on a budget – Epic Episode #8 — Media Division