Komura 150mm f/3.5 (Bronica)
Sankyo Koki · Bronica S · 1965 · 4 elements in 4 groups
single source, unconfirmedAlso known as: Komura 150mm f/3.5 Bronica · Komura 150mm F3.5 for Bronica · Sankyo Koki Komura 150mm f/3.5 · Sankyo Kohki Komura 150mm F3.5 Bronica · KOMURA 150mm F3.5 For BRONICA SANKYO KOHKI · Komura 3.5/150 Zenza Bronica S2A · Komura 150mm f3.5 Zenza Bronica S S2 S2A EC · コムラー 150mm F3.5 ブロニカ · 三協光機 コムラー 150mm F3.5 · ゼンザブロニカ用 コムラー 150mm
Variants & identification
| Variant | Mount | Years | Serial ranges | Production |
|---|---|---|---|---|
| Komura 150mm f/3.5 for Bronica, automatic diaphragm (1965–66 on) | Bronica S | 1965 | — | — |
- Element and group count, automatic diaphragm and 67 mm filter are from Japanese Wikipedia's Komura table alone; camera-wiki and Monaghan's list name the lens without specifications. No weight, length, minimum focus, blade count or minimum aperture has been published.
- Date: Seiden's history on Monaghan's page places the Komura line at 1965–66, with the 150mm f/3.5 in the list. No source dates the lens itself more closely.
- Four elements in four groups is a simpler construction than the five-in-four of the Zenzanon 150mm f/3.5 that Monaghan's page describes; the Nikkor 150mm f/3.5's construction is given on its own page.
How to tell them apart
- Engraved Komura with Sankyo Kōki's name (Sankyo Kohki in US-market spelling), on a Bronica small-bayonet mount with an automatic diaphragm; 67 mm filter thread
- Not the Nikkor 150mm f/3.5 or the Zenzanon 150mm f/3.5, Bronica's own lenses of the same length, speed and filter size; only the engraving tells them apart
- Not a Komura 150 mm for a 35 mm camera: no such lens is recorded in the Leica-thread, Nikon-S or Uni-mount lines
Komura 150mm f/3.5 for Bronica, automatic diaphragm (1965–66 on):
- Automatic diaphragm on the Bronica small bayonet, mounted on the front of the focusing helicoid (Japanese Wikipedia's lens table)
- 67 mm screw-in filter, the same size as Bronica's own Nikkor and Zenzanon 150mm f/3.5 lenses, so the filter does not separate them; the engraving does (Japanese Wikipedia; Monaghan on the Zenzanon 150)
- Komura 150mm f/3.5 for Bronica, automatic diaphragm (1965–66 on): The only version recorded. Japanese Wikipedia gives four elements in four groups, an automatic diaphragm and a 67 mm filter. Seiden's history dates the Komura line 1965–66 and includes the 150mm f/3.5; no end date or price is published.
Specifications
- Formula
- 4 elements in 4 groups
- Construction
- 4 elements / 4 groups
- Aperture range
- f/3.5
- Filter
- 67 mm
- Years manufactured
- 1965
- Country
- Japan
What reviewers say
No reviews aggregated yet — this family is still in the research queue. Written one? We'd love to index it.
History
The Komura 150mm f/3.5 was Sankyo Koki’s portrait telephoto for the focal-plane Bronica, matching the length, speed and 67 mm filter of the Nikkor 150mm f/3.5 that Bronica had added in the early 1960s and of the Zenzanon 150mm f/3.5 that followed. Seiden’s history on Monaghan’s page lists it among the Komura lenses of 1965–66, marketed by the US importer and absent from Bronica’s Japanese literature; Japanese Wikipedia records the lenses as sold by Sankyo Koki. No price has been found.
Japanese Wikipedia’s table gives four elements in four groups, an automatic diaphragm and a 67 mm screw-in filter. The four-element construction is simpler than the Zenzanon’s five in four groups. The automatic diaphragm puts it on the small bayonet at the front of the Bronica focusing helicoid, so it fits every focal-plane body from the Z/D to the EC-TL II; weight, length, minimum focus and blade count are unpublished.
The one user verdict on record is Gene Pallat’s, on the Bronica mailing list in June 2000: he had used the 45 and the 150 with a 75mm Nikkor on an S2A, found both Komuras “very good”, and told readers not to overlook a used one. Bronica forum opinion in general places the Komuras below the Nikkors. On the market it is the most often seen of the small-bayonet Komuras, usually offered as a Komura or Sankyo Kohki 150mm f/3.5 for Bronica S, S2, S2A or EC, and since it shares its filter size with Bronica’s own 150s, the engraving is what identifies it.
This history is AI-written, from the sources listed at the foot of the page. Where the record is silent it says so rather than filling the gap — but no human wrote these sentences.
Example photos
Sample photo wanted — shot with a Komura 150mm f/3.5 (Bronica)? We'd love to feature it (with credit).
Live listings
The listings collector hasn't run for this family yet — check back soon, or search the marketplaces directly meanwhile.