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

Mamiya-Sekor Shift Z 75mm f/4.5 W (RZ67)

Mamiya · Mamiya RZ67 · 1993

single source, unconfirmed

Also known as: Mamiya-Sekor Shift Z 75mm f/4.5 W · Mamiya Sekor Z 75mm F4.5 W Shift · Mamiya Sekor Shift Z 75mm f/4.5 · Mamiya RZ67 75mm f/4.5 Shift · Mamiya RZ 75mm 4.5 shift · Shift Z75mm f/4.5W · Mamiya M 75mm f/4.5 L SB · マミヤ セコール シフト Z 75mm F4.5 W · マミヤセコールZ 75mm F4.5 シフト · マミヤ RZ67 75mm F4.5

Variants & identification

Variant Mount Years Serial ranges Production
Mamiya-Sekor Shift Z 75mm f/4.5 W (perspective-control lens, manual shutter cocking) Mamiya RZ67 — — —
Mamiya M 75mm f/4.5 L SB (short barrel, no shift, for the Shift/Tilt Adapter NI701) Mamiya RZ67 (via Shift/Tilt Adapter NI701 or the 27.2 mm Auto Spacer) — — —
  1. The shift and rotation figures are Mamiya's: 20 mm vertically or horizontally, 17 mm diagonally, marked by white lines on the shift scale; rotation about the optical axis with click stops every 10°. The specification box of the shift-lens manual says 360°; the same manual's text says up to 90° right or left, and the 2004 brochure says 360° in 10-degree click stops. Diaphragm automation is kept at every shift.
  2. Manual cocking is stated by Mamiya's shift-lens manual (unlike other lenses for the RZ, the shift lens cannot be cocked with just the cocking lever of the camera body) and repeated by English Wikipedia and analog.cafe. The lever is lowered first, then the lens's cocking ring is turned to the mark; the Winder RZ does not cock it either.
  3. Construction, angle, closest focus, image circle, filter and dimensions are from Mamiya's shift-lens manual and its Mamiya-Sekor Z lens sheet, which agree on everything except weight: the manual prints 1720 g, the sheet and the 2004 brochure 1660 g. The lighter figure, given twice, is used in the spec fields and the disagreement is recorded rather than resolved. The sheet's minimum-focus column is measured from the lens front rim with the bellows fully extended (46 mm); the manual's 42 cm is from the film plane. The sheet's 62° is used; the manual's angle-of-view line is illegible in the scan.
  4. The SB figures are from the 2004 Pro IID brochure alone, whose dimension column for the SB lenses is headed length × diameter.
  5. The launch year is not known. The 1982 RZ67 manual has no shift lens; the shift-lens manual, which refers to the Winder RZ and the PD and AE Prism Finders RZ of the first body, shows it on sale before the Pro II of February 1993, and the Pro II manual counts shift lenses among the system's. 1993 is the earliest dated Mamiya document that names it and is entered as a no-later-than year, not a launch date: single source.
  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.
How to tell them apart (expand)
  • Both versions: RZ bayonet with 12 electrical contacts and a Seiko #1 electronic leaf shutter, 105 mm front filter thread, no hood. A 75mm shift lens with its own shutter-speed ring is the RB67's Mamiya Shift L 75mm f/4.5 S/L, a different lens that mounts on an RZ body with the dial at RBL
  • A shift knob on a stalk, a millimetre shift scale and a rotation scale mean the Shift Z; a plain short barrel marked M 75mm f/4.5 L SB is the adapter lens
  • Not to be confused with the Mamiya M 75mm f/3.5 L, the floating-element wide-angle of the same focal length, which has a 77 mm filter and a floating ring and no shift

Mamiya-Sekor Shift Z 75mm f/4.5 W (perspective-control lens, manual shutter cocking):

  • Engraved MAMIYA-SEKOR SHIFT Z f=75mm 1:4.5 W; a shift control knob on a stalk at the side of the barrel, a millimetre shift scale with white lines at 17 mm, and a rotation scale with 10° click stops¹
  • A shutter cocking ring with a cocked-position mark near the front of the barrel: this is the one RZ lens the body's cocking lever does not cock²
  • Shift-lens manual: 11 elements in 9 groups, f/4.5–32, 42 cm closest focus, 20 mm shift vertically or horizontally, 17 mm diagonally, 124 mm image circle, 105 mm filter, no hood, 152 mm long × 108 mm across, 1720 g³
  • Mamiya-Sekor Z lens sheet: 11 elements in 9 groups, 62°, f/32, 0.6× at full bellows extension (114 mm from the front rim), 36 mm equivalent, 105 mm filter, no hood, 108 × 152 mm, 1660 g³

Mamiya M 75mm f/4.5 L SB (short barrel, no shift, for the Shift/Tilt Adapter NI701):

  • M and SB on the name ring, no shift knob, no shift or rotation scales; a short barrel of 124.5 mm length × 108 mm diameter and 1295 g against the shift lens's 152 mm and 1660 g⁴
  • 2004 Pro IID brochure: 11 elements in 9 groups, 62°, f/45 minimum, 36 mm equivalent, 105 mm filter, no hood; closest focus 576 mm alone (0.24×) or 416 mm with the spacer (0.6×)⁴
  • Will not focus to close range on a bare body: the brochure says it focuses continuously from infinity to close-up only on the Shift/Tilt Adapter or with the 27.2 mm Auto Spacer

Specifications

Formula
Wide-angle with a 124 mm image circle, 11 elements in 9 groups (shift-lens manual; Mamiya-Sekor Z lens sheet)
Construction
11 elements / 9 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; cocked by the lens's own cocking ring after the body lever, not by the lever alone; a mechanical 1/400 works without a battery
Min. focus
0.42 m
Dimensions
108 × 152 mm
Weight
1660 g
Filter
105 mm
Years manufactured
1993
Country
Japan

What reviewers say

Optical formula — Wide-angle with a 124 mm image circle, 11 elements in 9 groups (shift-lens manual; Mamiya-Sekor Z lens sheet)

History

The Shift Z 75mm f/4.5 W is the RZ67’s one perspective-control lens: a moderate wide-angle, 62° across the 6×7 frame or about 36 mm in 35 mm terms, computed with a 124 mm image circle so that it can be moved off-axis. Mamiya’s manual gives 11 elements in 9 groups, f/4.5 to f/32, a closest focus of 42 cm from the film plane, a shift of 20 mm up, down, left or right or 17 mm on a diagonal, and rotation about the optical axis with click stops every 10°, so that the shift can be set in any direction relative to the film. The front takes a 105 mm filter and no hood, because, as the manual says, no hood could be designed that would not vignette when the lens is shifted. Mamiya’s Z lens sheet and the 2004 Pro IID brochure give 108 × 152 mm and 1660 g; the manual prints 1720 g.

The lens differs from every other RZ lens in one mechanical respect. The body’s cocking lever cocks the mirror but not this shutter; after lowering the lever, the photographer turns the cocking ring near the front of the lens as far as it goes, to the mark. Mamiya warns that a partly turned ring leaves the blades open and looking cocked, that a press of the release then lifts the mirror without an exposure, and that the Winder RZ will not cock it either. Analog.cafe’s reviewer describes the same twist of the large ring with an arrow before every shot. The shift knob sits on a stalk at the side of the barrel, and the manual’s advice is to stop down to f/16–32 at full shift at infinity, or f/22–32 close up, to hold the corners; to meter before shifting with the PD or AE prism finders; to bracket; and to use the matte or checker screens, since the rangefinder-spot and microprism aids black out when the lens is shifted.

Only the W barrel is documented. The 1982 RZ67 manual has no shift lens, though it says the RZ’s larger mount and shorter flange make such optics possible; the shift-lens manual belongs to the first Professional body’s era, since it refers to the Winder RZ and the PD and AE Prism Finders RZ; the Pro II manual of 1993 counts shift lenses among the system’s; and the 2004 Pro IID brochure still lists the lens with the same figures. No Mamiya source dates its launch, so the 1993 entered here is a no-later-than year. The brochure also lists a second 75mm f/4.5, the M 75mm f/4.5 L SB: a short-barrel lens of the same construction, angle and filter size, made for the Pro II’s Shift/Tilt Adapter NI701, with no shift mechanism of its own and, on a bare body, no close focus without the 27.2 mm Auto Spacer. It is treated here as a version of the same family on the brochure’s figures, which do not say whether the glass is shared. The RB67’s Mamiya Shift L 75mm f/4.5 S/L has the same 11-in-9 construction but its own shutter-speed ring and is a different lens with its own page, and the RZ’s M 75mm f/3.5 L, a floating-element wide-angle with a 77 mm thread, is a third lens again.

The two reviews found agree. Dmitri at analog.cafe finds the lens high in contrast and free of aberrations into the corners, likes the 0.42 m close focus for two-frame panoramas of small subjects, and sets against that the vignetting to correct after scanning, the 1.66 kg that keeps it on a tripod, and the narrowness of what it is for; he bought his for under $200. Pierre-Gilles Lucain at Emulsive has not used one and says so, calls it a big and heavy specialist tool, and advises anyone who does not need the shift to buy the floating-element 75mm f/3.5 instead. Nothing was found from the other review sites on the list.

Buying advice starts with the shutter. On a body with a good 6 V battery, lower the lever, turn the cocking ring fully to its mark and confirm that the screen is bright before pressing the release, then run 8 s and 1/400 and watch the blades; a lens that fires the mirror on a black screen has an uncocked shutter, not a fault. Work the shift knob through its full 20 mm each way and the rotation through its click stops, which should lock; the manual notes that the lens must be cocked before it is rotated to a position between clicks, or the cocking ring will pull it to the nearest stop. Look through the lens against a light for haze and separation, as with any Sekor of this age, check the 12 rear contacts, and remember that any RB shift lens offered as an RZ lens will have its own speed ring.

What could not be sourced: the launch year, the number of aperture blades, a description of the coating, a list price in yen or dollars, whether the SB lens shares the shift lens’s optics, and the year production ended. 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 wanted — shot with a Mamiya-Sekor Shift Z 75mm f/4.5 W (RZ67)? We'd love to feature it (with credit).

Live listings

Asking price, USD: a median of $400 across 9 fixed-price listings on 2026-09-21 (middle half $300–$450). First day tracked.

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

Show 2 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 Fisheye Z 37mm f/4.5 W (RZ67) · Mamiya-Sekor Z 50mm f/4.5 W (RZ67) · Mamiya-Sekor Z 65mm f/4 W (RZ67) · Mamiya M 75mm f/3.5 L (RZ67) · Mamiya-Sekor Z 90mm f/3.5 W (RZ67)

Sources (13)

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.