Bronica GS-1 150mm f/4 Zenzanon-PG Lens
The Bronica 150mm f/4 is a 150mm f/4 lens designed for Bronica GS mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Bronica GS-1 150mm f/4 Zenzanon-PG Lens
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Lens Overview — Bronica 150mm f/4
Key Features — Bronica 150mm f/4
150mm Medium Format Prime: A fixed telephoto focal length equivalent to roughly 75mm in 35mm terms, well-suited for portraits and detail work on the 6x7cm GS-1 system.
Bronica GS Mount: Dedicated bayonet mount designed exclusively for the Bronica GS-1, ensuring native compatibility without adapters or compromises.
f/4 Maximum Aperture: Provides usable light gathering for a medium format telephoto prime, with sufficient depth-of-field control for subject isolation.
Manual Focus Design: Fully manual focus operation suits the methodical, deliberate shooting style that medium format photography naturally encourages.
77mm Filter Thread: Generously sized front thread accommodates a wide range of commonly available screw-in filters including polarizers and ND filters.
850g Solid Construction: Substantial weight reflects the robust build quality consistent with Bronica's medium format lens heritage.
Lens Specifications — Bronica 150mm f/4
| Spec | Detail |
|---|---|
| Use Cases | Portrait, Studio, Product |
| Lens Type | Prime |
| Format | Medium Format |
| Zoom/Prime | Prime |
| Focal Length | 150mm |
| Maximum Aperture | f/4 |
| Camera System | Medium Format |
| Lens Mount | Bronica GS |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 77mm |
Description — Bronica 150mm f/4
The Bronica 150mm f/4 Zenzanon-PG is a manual focus prime lens purpose-built for the Bronica GS medium format system. Operating at a fixed 150mm focal length, it falls into telephoto prime territory and is designed to complement the GS-1 body with a native Bronica GS mount connection. The maximum aperture of f/4 provides a workable exposure envelope for controlled shooting conditions.
Weighing 850g, the lens has the solid, reassuring heft characteristic of medium format glass. A 77mm filter thread makes it easy to pair with standard filter systems for creative or protective use. There is no image stabilization and no autofocus — this is a fully manual, optically dedicated lens that rewards photographers who prefer hands-on control.
For GS-1 system users looking for a telephoto prime, the Zenzanon-PG 150mm is a straightforward, system-native choice.
Pros — Bronica 150mm f/4
- ✓Fixed 150mm focal length provides a dedicated telephoto perspective on the Bronica GS medium format system
- ✓Maximum aperture of f/4 offers usable light gathering for a medium format telephoto prime
- ✓Large 77mm filter thread accommodates a wide range of commonly available filter accessories
Cons — Bronica 150mm f/4
- ✗Manual focus only — no autofocus capability, which may slow down shooting in dynamic or fast-moving situations
- ✗No image stabilization, requiring careful technique or stable support for sharp images
- ✗At 850g, the lens adds significant weight to a medium format kit
Videos — Bronica 150mm f/4
Six Months with The Bronica GS-1 — My Go-To 6x7 Film Camera — Kyle McDougall