Glass Bodies a variant-level encyclopedia of vintage lenses and cameras by iwillpat

Mamiya-Sekor Z 110mm f/2.8 W (RZ67)

Mamiya · Mamiya RZ67 · 1982

Also known as: Mamiya-Sekor Z 110mm f/2.8 W · Mamiya Sekor Z 110mm F2.8 W · Mamiya Sekor Z 110mm f/2.8 · Mamiya RZ67 110mm f/2.8 · Mamiya RZ 110mm 2.8 · Z110mm f/2.8W · マミヤ セコール Z 110mm F2.8 W · マミヤセコールZ 110mm F2.8W · マミヤ RZ67 110mm F2.8

Variants & identification

Variant Mount Years Serial ranges Production
Mamiya-Sekor Z 110mm f/2.8 (1982, full-stop aperture ring) Mamiya RZ67 1982 — —
Mamiya-Sekor Z 110mm f/2.8 W (half-stop aperture ring) Mamiya RZ67 — — —
  1. The W designation is explained by Japanese Wikipedia (絞り目盛の間隔が広くなり、1/2段絞りが追加された: wider aperture-scale spacing, half stops added) and by Emulsive (half-stop markings, optics unchanged). No Mamiya document consulted states the year the W barrel replaced the plain Z.
  2. Construction, angle of view, minimum aperture and closest focus for the 1982 lens are from the RZ67 Professional instruction manual's lens table. The manual gives no weights.
  3. Weight, dimensions and magnification are from Mamiya's Mamiya-Sekor Z Interchangeable Lenses sheet, whose minimum-focus column is measured from the lens front rim with the bellows fully extended (46 mm), not from the film plane. The sheet's dimension column is read here as diameter × length.
  4. No aperture-blade count, coating description or list price in any currency was found in a Mamiya document; those fields are left empty rather than guessed.
How to tell them apart (expand)
  • Every version: RZ bayonet with 12 electrical contacts and a Seiko #1 electronic leaf shutter; no shutter-speed ring on the lens, since the body dial sets it. A lens with its own speed ring is an RB67 lens
  • No W on the name ring and a full-stop aperture ring means the 1982 lens; W with half-stop clicks means the later barrel
  • 77 mm filter thread and a screw-in hood on both versions

Mamiya-Sekor Z 110mm f/2.8 (1982, full-stop aperture ring):

  • Engraved MAMIYA-SEKOR Z f=110mm 1:2.8 with no W after the aperture; the aperture ring clicks at full stops only¹
  • 1982 RZ67 instruction manual: 6 elements in 5 groups, 44° angle of view, f/32 minimum, 53 cm closest focus, 77 mm screw-in filter and hood²
  • Listed by the 1982 manual as one of the three standard lenses of the RZ67 Professional, with the 90mm f/3.5 and 127mm f/3.8

Mamiya-Sekor Z 110mm f/2.8 W (half-stop aperture ring):

  • W after the aperture on the name ring; aperture ring with half-stop clicks and wider scale spacing¹
  • Mamiya-Sekor Z lens sheet: 6 elements in 5 groups, 44°, f/32, 0.42× at full bellows extension (313 mm from the front rim), 77 mm filter, 97 × 62 mm, 610 g³
  • The RZ67 Pro II manual names the 110mm f/2.8 as the camera's standard lens

Specifications

Construction
6 elements / 5 groups
Aperture range
f/2.8–f/32
Shutter
Seiko #1 electronic leaf shutter in the lens, 8s–1/400 plus B and T, set from the body dial; a mechanical 1/400 works without a battery
Min. focus
0.53 m
Dimensions
97 × 62 mm
Weight
610 g
Filter
77 mm
Years manufactured
1982
Country
Japan

What reviewers say

Optical Ratings

Aggregated from the reviews above — follow the links for the full picture.

Chromatic aberration
none noticed
Vignetting
none noticed
Flare & ghosting
moderate
Optical formula

History

The 110mm f/2.8 was one of the three lenses Mamiya listed as standard when the RZ67 Professional appeared in 1982, alongside the 90mm f/3.5 and 127mm f/3.8, and by the time of the Pro II of 1993 it was the standard lens, the one named in the manual and packed in the kits. The 1982 manual gives 6 elements in 5 groups, a 44° angle of view, f/2.8 to f/32 and a closest focus of 53 cm; Mamiya’s later Mamiya-Sekor Z lens sheet adds 610 g, a barrel 97 mm across and 62 mm long, a 77 mm filter thread and a magnification of 0.42× with the body’s 46 mm bellows fully extended. It is the fastest lens Mamiya made for the RZ67 and the smallest and lightest in the range, which is why it became the default.

Two versions exist and the difference is the aperture ring. The 1982 lens is engraved Mamiya-Sekor Z 110mm 1:2.8 and clicks at full stops. The W barrel that replaced it has a W after the aperture, a wider-spaced scale and half-stop clicks; Japanese Wikipedia describes the W change in exactly those terms and Pierre-Gilles Lucain, whose five-part Emulsive guide is the fullest account of the system in English, says the non-W lenses were made only for the first Professional body and are optically identical to the W. No Mamiya document consulted dates the changeover, and no W-N, L-A or APO version of the 110 was ever made. The lens has no shutter-speed ring: the Seiko #1 electronic leaf shutter inside it is set from the body’s dial, 8 s to 1/400 plus B and T, with a mechanical 1/400 available when the battery is flat.

Reviewers agree about the glass to a degree unusual for a forty-year-old design. Dmitri at analog.cafe finds no chromatic aberration, vignetting or softness anywhere in the frame at f/2.8 and describes the out-of-focus highlights as well corrected, without swirl or soap-bubble rims; his one complaint is moderate flare. Lucain calls the results fantastic and sharp and uses the lens for portraits, landscapes and street work; Matt Osborne rates it the best RZ portrait lens for the depth of field the bellows allow at close range; James Madison calls it legendary. The disagreement is over what it should be used for: Osborne finds the 180mm flattens faces and prefers the 110 for portraits, while Lucain reaches for the 180 W-N and the 250 for the same job and keeps the 110 as the general lens.

Buying one means buying into the RZ67’s electronics. The shutter fires only with a working 6 V battery in the body (4LR44 or the silver-oxide equivalent); without it the lens gives the 1/400 mechanical speed and nothing else. The shutter is cocked by the body’s lever with the mirror down, and the lens comes off only when cocked, so a lens that will not release or will not fire is usually a cocking-state problem rather than a fault. The blades of a lens that has sat unused can be slow or stick: fire it at 8 s and 1/400 and watch the blades open and close cleanly, check the depth-of-field preview lever and the T lever, and look at the 12 gold contacts on the rear for corrosion. Lucain warns against over-tightening the breech ring. RB67 lenses mount directly on the RZ body with the dial at RBL, but the reverse is not true; a listing that shows a lens with its own shutter-speed ring is an RB lens.

What could not be sourced: the number of aperture blades, a description of the coating, a list price in yen or dollars for either version, the year the W barrel arrived, and the year production ended. Japanese Wikipedia’s product list and Mamiya’s sheet agree on the optics; no designer is named anywhere.

Expand Collapse

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 taken with the Mamiya-Sekor Z 110mm f/2.8 W (RZ67)
RZ67 Professional with the 110mm f/2.8 on a Gitzo tripod (Piksi) — Piksi, via Wikimedia Commons (Public domain)

Sample photo wanted — shot with a Mamiya-Sekor Z 110mm f/2.8 W (RZ67)? We'd love to feature it (with credit).

Live listings

Asking price, USD: a median of $480 across 42 fixed-price listings on 2026-09-19 (middle half $430–$610). First day tracked.

Asking prices from the listings scanned, not sales; junk-flagged rows and auction lots excluded; other currencies are not converted.

Show 77 more listings

Buying from Yahoo! Auctions outside Japan. It is a domestic marketplace: sellers ship within Japan, and most will not register an overseas buyer. A proxy service bids on your behalf, receives the item and forwards it, for a fee and a wait. Buyee, Jauce and ZenMarket each accept a Yahoo auction number directly. Listed alphabetically for information — none is recommended over another, and none of these is an affiliate link.

Listings updated 2026-09-19. Links go to the shop or marketplace that carries the item.

Related: Mamiya-Sekor Z 180mm f/4.5 W-N (RZ67) · Mamiya-Sekor Z 250mm f/4.5 W / APO (RZ67) · Mamiya-Sekor Z 50mm f/4.5 W (RZ67) · Mamiya-Sekor Z 65mm f/4 W (RZ67) · Mamiya-Sekor Z 90mm f/3.5 W (RZ67)

Sources (11)

Every page here is assembled from public sources, and the gaps are real ones. If you own this lens, know a serial number I'm missing, or can see where I have it wrong, tell me — corrections, serials and sample photos are all worth having.