Mamiya 645 55-110mm f/4.5 Sekor C N
The Mamiya 55-110mm f/4.5 is a 55–110mm f/4.5 lens designed for Mamiya 645 mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Mamiya 645 55-110mm f/4.5 Sekor C N
Get notified when one lists.
We'll text or email you the moment a Mamiya 645 55-110mm f/4.5 Sekor C N is listed on GearFocus.
Have a Mamiya 55-110mm f/4.5 sitting in your bag?
You'd be the first listing for this model.
Serious buyers are already watching — list yours in minutes.
Available Now on GearFocus
Lens Overview — Mamiya 55-110mm f/4.5
Key Features — Mamiya 55-110mm f/4.5
55–110mm Medium Format Zoom: Covers a standard zoom range equivalent to roughly 35–70mm in 35mm terms, making it suitable for portraits, editorial, and general-purpose shooting on the Mamiya 645 system.
Constant f/4.5 Aperture: Maintains the same maximum aperture across the entire zoom range, ensuring consistent exposure settings without adjustment as you reframe.
Mamiya 645 Native Mount: Designed exclusively for the Mamiya 645 system, providing full mechanical compatibility with Mamiya 645 film bodies.
Medium Format Image Circle: Covers the larger image circle required by the 645 format, delivering the tonal depth and rendering quality characteristic of medium format photography.
Manual Focus Design: Suits the deliberate, methodical shooting pace typical of medium format workflows, with a dedicated focus ring for precise control.
77mm Filter Thread: A widely used filter diameter, making it straightforward to source compatible polarizers, ND filters, and other accessories.
Lens Specifications — Mamiya 55-110mm f/4.5
| Spec | Detail |
|---|---|
| Use Cases | Portrait, Landscape, Studio |
| Lens Type | Zoom |
| Format | Medium Format |
| Zoom/Prime | Zoom |
| Focal Length | 55–110mm |
| Maximum Aperture | f/4.5 |
| Camera System | Medium Format |
| Lens Mount | Mamiya 645 |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 77mm |
Description — Mamiya 55-110mm f/4.5
The Mamiya 645 55-110mm f/4.5 Sekor C N is a zoom lens built for the Mamiya 645 camera system, covering a 55mm to 110mm focal length range in the standard zoom category. It is a medium format lens, engineered to meet the imaging demands of the Mamiya 645 mount. The lens features a maximum aperture of f/4.5, delivering consistent exposure values as you move through the zoom range.
Focus is manual, placing full control in the photographer's hands — a fitting approach for the thoughtful pace of medium format work. The 77mm filter thread offers broad compatibility with standard filter systems, and the lens tips the scales at 850g, reflecting the robust construction expected of medium format optics. With no image stabilization, a steady shooting platform is recommended to get the most from this lens across its focal length range.
Pros — Mamiya 55-110mm f/4.5
- ✓Covers a useful 55–110mm focal length range for a standard zoom in medium format
- ✓Consistent maximum aperture of f/4.5 across the entire zoom range
- ✓77mm filter thread is a widely available and practical size for accessories
Cons — Mamiya 55-110mm f/4.5
- ✗Maximum aperture of f/4.5 is relatively modest, limiting performance in lower light situations
- ✗No image stabilization, which can be a challenge at longer focal lengths or slower shutter speeds
- ✗At 850g, the lens adds considerable weight to a medium format kit