Mamiya K/L 150mm f/3.5 L (RB67)
Mamiya · Mamiya RB67 · 1990
single source, unconfirmedAlso known as: Mamiya K/L 150mm f/3.5 L · Mamiya KL 150mm f3.5 L · Mamiya RB67 150mm f/3.5 K/L · Mamiya RB67 KL 150mm · Mamiya 150mm f/3.5 KL · KL 150/3.5 L · マミヤ KL 150mm F3.5 L · マミヤ RB67 150mm F3.5 · マミヤ K/L 150mm F3.5
Variants & identification
| Variant | Mount | Years | Serial ranges | Production |
|---|---|---|---|---|
| Mamiya K/L 150mm f/3.5 L · Seiko #1, T and 1s–1/400, cocked by the body, flash sync at every speed | Mamiya RB67 | 1990 | — | — |
- Construction (6 in 4) and the 77 mm filter are agreed by Japanese Wikipedia and camera-wiki; the closest focus (0.817 m) is Japanese Wikipedia's alone, and no source consulted gives a weight, length, minimum aperture or angle of view. The page carries the single-source flag. Mamiya's legacy RB67 Pro SD lens page lists the 150mm f/4 soft focus and not this lens.
- The year is the K/L generation's: camera-wiki dates the Pro-SD to 1990 and Japanese Wikipedia the body to September 1990. No source consulted dates the lens itself or gives a list price. No discontinuation date is published.
- The shutter figures are the RB line's: Mamiya's Pro SD page gives every lens it lists a Seiko #1 mechanical shutter, 1 to 1/400 second and T with X sync at all speeds, and camera-wiki says the same of the RB lenses generally.
- The SF C 150mm f/4 (5 elements in 3 groups, soft focus) is a different lens and a different page; the RZ67's 150 is the Sekor Z 150mm f/3.5 with electrical contacts.
How to tell them apart
- K/L and L on the ring, f/3.5: the RB67's soft-focus 150 is marked SF C and opens to f/4
- 77 mm thread like the 90mm f/3.5 L and 127mm f/3.5; the 7 mm rear ring is the K/L mark, removable for the Pro and Pro-S
- Seiko #1 leaf shutter in the lens, cocked by the body's lever, cocking pins turned fully to the red mark before mounting
Mamiya K/L 150mm f/3.5 L:
- K/L on the name ring and L after the aperture; no Sekor name, which Japanese Wikipedia says was dropped with the KL series
- 1:3.5 maximum aperture: the RB67's other 150, the SF C 150mm f/4, is a soft-focus lens with a Softness Control Ring and an f/4 ring
- 6 elements in 4 groups, 77 mm filter thread, closest focus 0.817 m (Japanese Wikipedia; camera-wiki on the construction and filter)
- Supplied with a removable 7 mm rear ring for the 54 mm mount of the Pro and Pro-S; removed, it sits on the Pro-SD's 61 mm mount (camera-wiki; Japanese Wikipedia)
- Mamiya K/L 150mm f/3.5 L: The only version, and the only ordinary 150 the RB67 ever had: before it, the focal length was served by the SF C 150mm f/4 soft-focus lens alone. It belongs to the K/L generation camera-wiki ties to the Pro-SD of 1990, which is the year carried here; no source consulted dates the lens itself. Mamiya's own legacy Pro SD lens page lists the 150mm f/4 soft focus and not this lens, so its figures rest on the two wikis.
Specifications
- Formula
- 6 elements in 4 groups (Japanese Wikipedia 4群6枚; camera-wiki)
- Construction
- 6 elements / 4 groups
- Aperture range
- f/3.5
- Shutter
- Seiko #1 leaf shutter in the lens: T and 1s–1/400, cocked by the body's lever, flash sync at every speed (Mamiya's RB67 Pro SD lens page for the K/L lenses it lists; camera-wiki)
- Min. focus
- 0.817 m
- Filter
- 77 mm
- Years manufactured
- 1990
- Country
- Japan
- Coating
- Multicoated: camera-wiki describes the K/L lenses as a newer design with better coatings than the C lenses
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 K/L 150mm f/3.5 L is the RB67’s ordinary short telephoto, a 74 mm equivalent on 35mm film, and it arrived late: for the first twenty years of the camera the only 150 in the line was the SF C 150mm f/4 soft-focus lens, and the plain 150 came with the K/L generation that camera-wiki ties to the Pro-SD of 1990. Japanese Wikipedia gives it 6 elements in 4 groups, a closest focus of 0.817 m and a 77 mm filter thread; camera-wiki agrees on the construction and the thread. Nothing consulted gives its weight or length. Its Seiko #1 leaf shutter is the RB line’s, T and 1 second to 1/400 with flash sync at every speed, cocked by the body.
There is one version and it carries the whole K/L apparatus: K/L on the ring because it fits the Pro and Pro-S (K) and the Pro-SD (L), with a 7 mm rear ring that comes off for the older bodies’ narrower 54 mm mount and stays on for the Pro-SD’s 61 mm one. The Sekor name is gone, as Japanese Wikipedia notes for the whole KL series. Mamiya’s own legacy Pro SD lens page, which lists the K/L 90mm f/3.5 L and the APO telephotos with full figures, has the 150mm f/4 soft focus in the 150 slot and does not mention this lens, so its specification rests on the two wikis and the page carries the single-source flag.
No review of this lens was found by the searches made for this page, and the reviewers of the RB67 write about the 90, the 127 and the 180 instead; the 150 was a late addition to a system whose users already owned a 127 or a 180. What the documents show is a six-element lens of the same generation as the 90mm f/3.5 L, with the better coatings camera-wiki credits to the K/L lenses, a stop faster than the soft-focus 150 and a third of a metre closer-focusing by the Japanese figures (0.817 m against the Pro SD page’s 856 mm for the SF).
Buying one is about the shutter, as with every RB lens: cocking pins turned fully to the red mark before mounting, slow speeds counted, the T setting checked. Then the ring: a K/L sold without its 7 mm rear ring will not seat properly on a Pro or Pro-S, and the ring is the part most often lost. Read the name ring before paying, since sellers write ‘RB67 150mm’ for the soft-focus lens as readily as for this one; SF C and f/4 is the other lens. What remains open: the launch year, weight, length and minimum aperture from any source, a list price in any currency, and an independent test.
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 Mamiya K/L 150mm f/3.5 L (RB67)? We'd love to feature it (with credit).
Live listings
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