Zenzanon-S 100mm f/4.5 Lens
The Bronica 100mm f/4.5 is a 100mm f/4.5 lens designed for Bronica SQ mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Zenzanon-S 100mm f/4.5 Lens
Get notified when one lists.
We'll text or email you the moment a Zenzanon-S 100mm f/4.5 Lens is listed on GearFocus.
Have a Bronica 100mm 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 — Bronica 100mm f/4.5
Key Features — Bronica 100mm f/4.5
100mm Medium Format Prime: A fixed 100mm focal length on the 6x6 medium format frame delivers a natural, slightly telephoto perspective well-suited to portraiture and general shooting.
Bronica SQ Mount: Purpose-built for the Bronica SQ system, ensuring native compatibility with SQ-A, SQ-Ai, and SQ-B bodies without adapters.
f/4.5 Maximum Aperture: A moderate maximum aperture provides adequate light gathering for controlled studio or daylight shooting in the medium format workflow.
Manual Focus Design: Fully manual focusing suits the deliberate, methodical pace of medium format photography and film-based shooting.
67mm Filter Thread: Standard 67mm filter compatibility gives access to a wide range of readily available polarizers, ND filters, and other accessories.
500g Build Weight: At 500g, the lens is substantial but manageable for a medium format prime, balancing well on SQ system bodies.
Lens Specifications — Bronica 100mm f/4.5
| Spec | Detail |
|---|---|
| Use Cases | Portrait, Studio, Product |
| Lens Type | Prime |
| Format | Medium Format |
| Zoom/Prime | Prime |
| Focal Length | 100mm |
| Maximum Aperture | f/4.5 |
| Camera System | Medium Format |
| Lens Mount | Bronica SQ |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 67mm |
Description — Bronica 100mm f/4.5
The Bronica Zenzanon-S 100mm f/4.5 is a manual focus prime lens built natively for the Bronica SQ mount. As a medium format lens in the standard focal length range, it delivers a 100mm perspective that suits a variety of photographic applications within the SQ system ecosystem. The maximum aperture of f/4.5 provides a consistent exposure setting across shooting conditions.
With a 67mm filter thread, the lens integrates easily with standard filter systems for both practical and creative applications. At 500g, it has a sturdy presence without being excessively cumbersome for medium format use. The absence of image stabilization is noted, and as with all prime lenses, framing is achieved through camera positioning rather than zoom adjustment.
This is a purpose-built, single-mount lens for Bronica SQ system photographers who value the fixed focal length approach and the deliberate workflow it encourages.
Pros — Bronica 100mm f/4.5
- ✓Fixed 100mm focal length in the standard range offers a versatile perspective for medium format shooting
- ✓67mm filter thread size provides broad compatibility with widely available filter accessories
- ✓Dedicated Bronica SQ mount ensures direct, native compatibility with the SQ system
Cons — Bronica 100mm f/4.5
- ✗Manual focus only — no autofocus support for faster-paced shooting situations
- ✗Maximum aperture of f/4.5 is relatively modest, limiting performance in lower light conditions
- ✗No image stabilization, requiring steady technique or support in handheld use
Videos — Bronica 100mm f/4.5
The ONLY 7 Vintage Lenses I'm Keeping out of 100! — DSLR Video Shooter