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

Mamiya-Sekor Macro Z 140mm f/4.5 (RZ67)

Mamiya · Mamiya RZ67 · 1982

Also known as: Mamiya-Sekor Macro Z 140mm f/4.5 W · Mamiya Sekor Macro Z 140mm F4.5 W · Mamiya Sekor Z 140mm f/4.5 Macro · Mamiya Macro M 140mm f/4.5 M/L-A · Mamiya RZ67 140mm f/4.5 Macro · Mamiya RZ 140mm 4.5 Macro · Mamiya RZ 140mm L-A · マミヤ セコール マクロ Z 140mm F4.5 W · マミヤ マクロ M 140mm F4.5 M/L-A · マミヤ RZ67 140mm F4.5 マクロ

Variants & identification

Variant Mount Years Serial ranges Production
Mamiya-Sekor Macro Z 140mm f/4.5 (1982, full-stop aperture ring) · 7 elements in 4 groups (1982 RZ67 manual) Mamiya RZ67 1982 — —
Mamiya-Sekor Macro Z 140mm f/4.5 W (half-stop aperture ring, floating ring) · 7 elements in 4 groups (Mamiya instruction sheet) Mamiya RZ67 — — —
Mamiya Macro M 140mm f/4.5 M/L-A (6 elements in 4 groups) · Gauss type with floating system, 6 elements in 4 groups (Mamiya instruction booklet and brochures) 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). No Mamiya document consulted dates the W barrel; it is in the June 1988 brochure.
  2. Construction, angle of view, minimum aperture and closest focus for the 1982 lens are from the RZ67 Professional instruction manual's lens table and the first Mamiya-Sekor Z Lenses booklet. Neither gives weights.
  3. Weight, dimensions and the floating-ring routine for the W are from Mamiya's own instruction sheet for the Macro Z 140mm f/4.5; the Mamiya-Sekor Z lens sheet's minimum-focus column is measured from the lens front rim with the bellows fully extended (46 mm), not from the film plane.
  4. The M/L-A's construction comes from its Mamiya instruction booklet, the 1999 Pro II brochure, the 2004 Pro IID brochure and Japanese Wikipedia, which agree on 6 elements in 4 groups; Emulsive's 7 in 4 for this version is not supported by any Mamiya document. The booklet gives 870 g without cap and 90 × 97 mm; both brochures give 930 g and 97 × 97.2 mm. The family fields carry the brochure figures, the booklet's are given here.
  5. The family spec fields below carry the M/L-A (6 elements, 4 groups, 0.76 m, 930 g, 97 mm long) because it is the version Mamiya's later documents describe; the 1982 lens and the W are in their variant rows.
  6. 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. A dealer listing gives 8 blades, which is not carried here.
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. A 140mm macro with its own speed ring is the RB67's Sekor C or K/L 140mm f/4.5, a different lens
  • Three name rings: MAMIYA-SEKOR MACRO Z (full-stop ring, 1982), MACRO Z with W (half stops, floating ring), MAMIYA MACRO M with M/L-A (no Sekor, 6 elements)
  • MAG. and STEP scales on the distance ring for magnification and exposure compensation, 77 mm filter thread and screw-in hood throughout; lens hood M77 No. 1, shared with the 90 and 110

Mamiya-Sekor Macro Z 140mm f/4.5 (1982, full-stop aperture ring):

  • Engraved MAMIYA-SEKOR MACRO Z f=140mm 1:4.5 with no W after the aperture; full-stop aperture ring¹
  • 1982 RZ67 instruction manual and the first Mamiya-Sekor Z Lenses booklet: 4 groups, 7 elements, 35° angle of view, f/32 minimum, 75 cm closest focus, 77 mm screw-in filter and hood²
  • Close-up table in the 1982 manual: 0.33× at full bellows extension, 50.9 cm from the front of the lens, 17.0 × 21.1 cm covered

Mamiya-Sekor Macro Z 140mm f/4.5 W (half-stop aperture ring, floating ring):

  • W after the aperture on the name ring; half-stop aperture clicks¹
  • Floating ring at the front of the barrel with a white scale in millimetres of bellows extension and yellow No. 1, white No. 2 and No. 1 + 2 scales for the extension tubes³
  • Mamiya instruction sheet: 7 elements in 4 groups, 35°, f/4.5 to f/32, 77 mm screw-in filter and hood, 83.5 mm long, 97.2 mm across, 810 g³
  • Mamiya-Sekor Z lens sheet: 0.33× at full bellows extension, 516 mm from the front rim, 169 × 210 mm covered, 68 mm equivalent, 97 × 84 mm, 810 g

Mamiya Macro M 140mm f/4.5 M/L-A (6 elements in 4 groups):

  • Name ring reads MAMIYA MACRO M 1:4.5 f=140mm M/L-A with no Sekor; the M series dropped the Sekor name (Japanese Wikipedia)⁴
  • Floating ring with white, green No. 1, white No. 2 and red No. 1 + 2 scales; 6 elements in 4 groups, 35°, f/32, 77 mm screw-in filter and hood⁴
  • Instruction booklet: 90 × 97 mm, 870 g without cap; the 1999 and 2004 brochures give 97 × 97.2 mm and 930 g⁴
  • Japanese Wikipedia: 4群6枚, closest focus 0.759 m, φ77 mm screw-in

Serial-range notes

two-letter date code
Mamiya dated RB and RZ lenses with a two-letter code stuck to the back of the lens: the first letter is the year, the second the month, A = January. Year letters run A–J for 1971–1980, A–T for 1981–2000 and A–N for 2001–2014, so the decade has to be read from the generation (Mamiya Repair). No serial-to-year table for the 140 has been published.

Specifications

Formula
Gauss type with a floating group (Mamiya, for the M/L-A); 7 elements in 4 groups in the Z and Z W, 6 elements in 4 groups in the M/L-A
Construction
6 elements / 4 groups
Aperture range
f/4.5–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
0.76 m
Dimensions
97.2 × 97 mm
Weight
930 g
Filter
77 mm
Years manufactured
1982
Country
Japan

What reviewers say

Optical formula — Gauss type with a floating group (Mamiya, for the M/L-A); 7 elements in 4 groups in the Z and Z W, 6 elements in 4 groups in the M/L-A

History

The 140mm f/4.5 is the RZ67’s macro lens and its third generation is the one that matters. The 1982 RZ67 Professional manual lists a Macro 140mm f/4.5 of 7 elements in 4 groups, 35°, f/4.5 to f/32 and a closest focus of 75 cm, with a 77 mm screw-in filter; the close-up table gives 0.33× with the body’s 46 mm bellows fully extended. The W barrel, with half-stop clicks, kept the same optics at 810 g and 83.5 × 97.2 mm and is the one in the June 1988 brochure. The M series lens, engraved Mamiya Macro M 140mm f/4.5 M/L-A with no Sekor, is a Gauss type of 6 elements in 4 groups, 0.76 m at closest focus, 930 g by the 1999 and 2004 brochures and 870 g without cap by its own booklet. It is missing from the 1988 brochure and present in the February 1999 Pro II brochure, and no Mamiya document read here dates it more closely.

Every version documented by Mamiya has a floating ring, and it is the reason the lens has a reputation for inconsistency in the wrong hands. The instruction sheets for the W and the M/L-A describe the same routine: focus with the bellows, read the extension in millimetres from the scale on the side of the body, turn the floating ring to the same figure, then refocus. For distant subjects the ring can sit at infinity; for the auto extension tubes it has its own scales, No. 1 for 77 to 59 cm, No. 2 for 60 to 56 cm, and No. 1 + 2 for life size, which the M/L-A reaches at 15 mm of bellows and the W at 13 mm. The Pro II brochure’s close-up table gives 0.90 to 1.22× with both tubes. Lucain’s Emulsive guide calls this the triple focus and warns that without tubes the lens is a 140 that happens to reach 76 cm rather than a macro.

Reviewers who follow the routine are unanimous about the glass and divided about the use. Christian Bucher, on photographyreview.com, finds distortion, vignetting and flare all but invisible at every aperture and distance and uses the lens for fashion and industrial work; Lucain calls the M/L-A really excellent. MaxKißler on GetDPI describes a very flat field with resolution held into the corners wide open, where the 150mm f/3.5 softens, and rates the 140 the more versatile of the two. The dissent is about character: TMARK and AndreNapier on Luminous Landscape find it too sharp for portraits, and bhmorrow, after two years, judges it excellent in some situations and not a general lens, blaming shallow depth of field and a floating ring that is easy to forget. Mamiya itself recommended it, with the 110, 150, 180 and 210 APO, for the Shift/Tilt Adapter.

Buying one means the RZ system’s checks plus the ring. The Seiko #1 electronic shutter fires only with a working 6 V battery in the body and gives a mechanical 1/400 without one; the lens comes off only when cocked with the mirror down; run it at 8 s and 1/400, work the depth-of-field preview and T levers, and look at the 12 rear contacts. Then turn the floating ring through its travel and check it is not stiff or free-spinning, and confirm the name ring: MACRO Z without W is the 1982 lens, MACRO Z with W the half-stop barrel, MAMIYA MACRO M with M/L-A the six-element lens. The RB67’s Sekor C and K/L 140mm f/4.5 macros mount on an RZ at RBL and sell under nearly the same words; the K/L is engraved with its own shutter-speed ring.

What could not be sourced: a weight for the 1982 barrel, whether the 1982 barrel had the floating ring, the years of the W and the M/L-A beyond the 1988 and 1999 brochures that bracket them, the number of aperture blades, the coating, and a list price in any currency. Japanese Wikipedia, both brochures and the M/L-A booklet agree on 6 elements in 4 groups; Emulsive’s 7 in 4 for that version stands alone. No designer is named anywhere.

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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-Sekor Macro Z 140mm f/4.5 (RZ67)? We'd love to feature it (with credit).

Live listings

Asking price, USD: a median of $270 across 14 fixed-price listings on 2026-09-21 (middle half $250–$310). First day tracked.

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

Show 27 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 2026-09-21. Links go to the shop or marketplace that carries the item.

Related: Mamiya-Sekor Z 110mm f/2.8 W (RZ67) · Mamiya-Sekor Z 127mm f/3.5 W (RZ67) · Mamiya-Sekor Z 150mm f/3.5 W (RZ67) · Mamiya-Sekor Z 180mm f/4.5 W-N (RZ67)

Sources (18)

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.