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

Mamiya-Sekor 75mm f/5.6 (Press)

Mamiya · Mamiya Press · 1969

single source, unconfirmed

Also known as: Mamiya Press 75mm f/5.6 · Mamiya Press 75mm f5.6 · Mamiya-Sekor 75mm f/5.6 · Mamiya Sekor 75mm f5.6 Universal · Mamiya Universal 75mm f5.6 · Mamiya Sekor P 75mm · Sekor 75/5.6 · マミヤプレス 75mm · マミヤ セコール 75mm F5.6 · セコールP 75mm F5.6

Variants & identification

Variant Mount Years Serial ranges Production
Mamiya-Sekor 75mm f/5.6 (black barrel, press-focus shutter) · Seiko #0, B and 1s–1/500, M-X sync; press-focus lever holds the blades open Mamiya Press 1969 — —
  1. Element and group counts, minimum aperture, filter size, hood and shutter-arresting method are from the later Mamiya Universal manual's table (p.46), the only Mamiya document consulted that lists the 75. Its angle-of-view cells print 61°, 68° and 77° with the asterisk of the Polaroid format on the 77°; English Wikipedia reads them as 61° on 6×7, 68° on 6×9 and 77° on the Polaroid pack.
  2. Closest focus of 1.0 m is Japanese Wikipedia's figure; English Wikipedia gives 3.5 ft (1.1 m), which is the first column of the Universal manual's depth-of-field table in feet (p.49). No maker document states it as a specification.
  3. Weight of 650 g is English Wikipedia's and camera-wiki's figure; no Mamiya document consulted gives a weight for the 75.
  4. Year: the 75 is not in the 1969 Universal manual or the Universal Lenses booklet (print code 69AA) and is in the later Universal manual, which carries no date. 1969 is the Universal's year and a floor, not a launch date; no source dates the lens. English Wikipedia says the 75, 127 and 150 for the Polaroid 600 SE share their optics with the Press lenses, and Emulsive's 600 SE review lists the 75 as that camera's wide angle, but the 600 SE's own date is not given by any source consulted.
  5. The 75 is listed only in the later Universal manual and so gets the Seiko #0 name that manual uses; camera-wiki says the Seikosha-S was on the chrome lenses and the Seiko #0 on the later ones, and the 75 exists only as a black lens.
How to tell them apart (expand)
  • One version: black barrel, 72 mm filter thread and clamp-on hood shared with the 50 and the 100mm f/2.8, minimum aperture f/45
  • Press-focus lever holds the blades open for ground-glass focusing after cocking, as on the black 100s, 127 and 150; no time lever
  • Rangefinder coupled; framed with its own optical finder on the accessory shoe, or with the optical viewfinder Model P when shooting the Polaroid pack format (later Universal manual)
  • Cannot be mounted on the extension rings, with the 250mm f/5 the only other lens so excluded (later Universal manual)
  • A 75mm f/5.6 on a Polaroid 600 SE is the same glass in a different mount and does not fit a Mamiya body (English Wikipedia)

Mamiya-Sekor 75mm f/5.6 (black barrel, press-focus shutter):

  • Black-finished barrel only, 72 mm filter thread, clamp-on hood; the later Universal manual lists no chrome version
  • Full-size focusing ring rather than a tab, aperture to f/45, press-focus lever on the shutter (Camera Reflections; Universal manual p.47)
  • Engraved Mamiya-Sekor 1:5.6 f=75mm; sold with its own optical finder for the accessory shoe, and used with the Model P finder on the Polaroid pack format

Specifications

Formula
7 elements in 4 groups, Super-Angulon type (later Universal manual for the counts; English Wikipedia and camera-wiki for the type)
Construction
7 elements / 4 groups
Aperture range
f/5.6–f/45
Shutter
Seiko #0 leaf shutter in the lens: B and 1s–1/500, cocked by a lever on the barrel, M-X flash sync at every speed; a press-focus lever holds the blades open for the focusing screen
Min. focus
1 m
Weight
650 g
Filter
72 mm
Years manufactured
1969
Country
Japan

What reviewers say

Optical formula — 7 elements in 4 groups, Super-Angulon type (later Universal manual for the counts; English Wikipedia and camera-wiki for the type)

History

The 75mm f/5.6 is the late wide angle of the Mamiya Press, the one Mamiya designed to cover the Polaroid pack frame that the Universal’s Polaroid holder puts behind the lens. The later Universal manual, the only Mamiya document consulted that lists it, gives 7 elements in 4 groups with a cross-section of a symmetrical wide angle with thick outer menisci, the Super-Angulon form that English Wikipedia and camera-wiki both name; the same table prints its angles of view as 61°, 68° and 77°, the last marked as the Polaroid format, which Wikipedia reads as 61° on 6×7 and 68° on 6×9. The aperture runs to f/45, two stops past the 50 and the 65, the filter thread is 72 mm with a clamp-on hood, and the weight is 650 g by the Wikipedia figure. The manual says only the 75 and the 127 cover the Polaroid pack, that the 75 uses its own optical finder on the shoe and the Model P finder when shooting Polaroid, and that it and the 250mm f/5 are the two lenses that cannot be mounted on the extension rings.

There is one version, black. The lens is absent from the 1969 Universal manual and from the Universal Lenses booklet of the same year, whose table runs from the 50 to the 250mm f/8 without it, and present in the later Universal manual, which carries no date; so the year on this page is the Universal’s own, a floor and not a launch date. Its shutter is the Seiko #0, B and 1 to 1/500 second with M and X sync at every speed, and the blades are held open for the ground glass by a press-focus lever, the method of the black lenses. The same glass, in a different mount, is the wide-angle of the Polaroid 600 SE that Mamiya built for Polaroid, where it is one of three lenses with the 127 and the 150; English Wikipedia says the three share their optical design with their Press counterparts and fit nothing else, so a 75 from a 600 SE will not mount on a Mamiya body. Japanese Wikipedia lists the Mamiya lens as the Sekor P 75mm f/5.6, which is worth knowing when searching Japanese listings.

Greg at Camera Reflections, who shot it beside the 50, 65 and 100, calls it the best-handling wide of the range: a full focusing ring instead of a tab, coverage well past 6×9, low distortion and vignetting from the Super-Angulon layout, and a lever that opens the blades for the ground glass without going to B. Brian Saculles’s Emulsive review of the 600 SE names the 75 as that camera’s wide angle and gives no verdict on it. That is the whole of the reviewing consulted: nobody indexed here has compared the 75 with the 65 on film, and the Rangefinderforum thread on whether it is any good could not be read from this container.

When buying, check for the finder, which is specific to the 75 and often missing, and ask which mount the lens is in, since 600 SE lenses turn up described as Mamiya Press lenses and do not fit. Run the shutter through its speeds, pull the press-focus lever after cocking and make sure it returns and closes the blades, and look through the front group for haze, which the large front element makes easy to see. No list price in yen or dollars was found for the 75, no production figures, no serial-number scheme, no launch year and no weight from Mamiya; the weight is Wikipedia’s.

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 75mm f/5.6 (Press)
Mamiya Press body with the 75mm f/5.6 and its optical finder — Zebrio (Brian Scott Peterson), via Wikimedia Commons (CC BY-SA 2.0)
Sample photo taken with the Mamiya-Sekor 75mm f/5.6 (Press)
The 75mm f/5.6 with finder, hood, filter and pouch — Zebrio, via Wikimedia Commons (CC BY-SA 2.0)

Sample photo wanted — shot with a Mamiya-Sekor 75mm f/5.6 (Press)? We'd love to feature it (with credit).

Live listings

Asking price, USD: a median of $300 across 19 fixed-price listings on 2026-09-21 (middle half $240–$340). First day tracked.

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

Show 23 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 50mm f/6.3 (Press) · Mamiya-Sekor 65mm f/6.3 (Press) · Mamiya-Sekor 90mm f/3.5 (Press) · Mamiya-Sekor 100mm f/2.8 (Press) · Mamiya-Sekor 100mm f/3.5 (Press) · Mamiya-Sekor 127mm f/4.7 (Press) · Mamiya-Sekor 150mm f/5.6 (Press) · Mamiya-Sekor 250mm f/5 (Press)

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.