Mamiya 645 AF Zoom 55-110mm f/4.5
Mamiya · Mamiya 645 AF · 2001
Also known as: Mamiya Zoom AF 55-110mm f/4.5 · Mamiya 645AF 55-110mm f4.5 · Mamiya 645 AF 55-110mm f/4.5 · Mamiya AF 55-110mm F4.5 · Mamiya 55-110mm f/4.5 AF · Mamiya 645AFD 55-110mm · Phase One 55-110mm f/4.5 AF · Phase One AF 55-110mm · マミヤ ズーム AF 55-110mm F4.5 · マミヤ AF 55-110mm F4.5 · マミヤ645AF 55-110mm
Variants & identification
| Variant | Mount | Years | Serial ranges | Production |
|---|---|---|---|---|
| Mamiya Zoom AF 55-110mm f/4.5 | Mamiya 645 AF | 2001 | — | — |
- Optical construction, angle of view, minimum aperture, closest focus, magnification, filter size, hood, dimensions and weight are from Mamiya's later 645AF Interchangeable Lenses instruction sheet (cameramanuals.org) and agree with Mamiya Digital Imaging's 645AFD II lens page of 2008 and the Wikipedia table (870 g). Popular Photography measured 56.70–112.03mm and f/4.70–4.50 and weighed it at 1 lb 14¾ oz.
- The 2001 first year is bounded, not announced: the lens is absent from Mamiya's launch-era lens sheet (five lenses), Mamiya America's brochure printed in February 2001 counts nine lenses then available for the 645AF, the 645AFD manual of the December 2001 body refers to the AF zoom lenses, and Popular Photography's test appeared in October 2002. No source consulted names a release month.
- Prices: $2,659 list and about $2,000 street in Popular Photography's October 2002 test; ¥180,000 excluding tax on Mamiya's 645AFD II lens page of 2008. The yen figure is carried as the maker's own price; the dollar figure is the same list price Popular Photography printed for the 105-210mm.
- The manual-focus Mamiya-Sekor Zoom C 55-110mm f/4.5 N of the M645 mount has the same 11-in-10 construction, 1.5 m closest focus and 67 mm filter (Japanese Wikipedia) but an aperture ring and a different mount; it is a different page, and a 55-110 marked N is that lens.
- No source consulted gives the aperture blade count or a discontinuation date.
How to tell them apart
- Zoom AF 55-110mm f/4.5 on the ring with no N and no D, no aperture ring, 67 mm thread; a 55-110 with an N on the ring and an aperture ring is the manual-focus Zoom C of the M645 mount
- 110 mm long, 86.5 mm across and 870 g, 11 elements in 10 groups, focusing to 1.5 m (Mamiya sheet)
- The shortest and lightest of the three original AF zooms; the 45-90 D of 2008 is wider, heavier and focuses to 0.5 m
Mamiya Zoom AF 55-110mm f/4.5:
- Name ring reads Zoom AF 55-110mm f/4.5 without an N or a D; no aperture ring; focal lengths engraved at 55, 75, 90 and 110 on the zoom ring at the rear of the barrel, the wide focusing collar in front of it (Popular Photography, 2002)
- Mamiya's instruction sheet: 11 elements in 10 groups, 65°–35° angle of view, f/32 minimum, 150 cm closest focus, 0.04–0.08× magnification, 67 mm filter, bayonet hood, 110 mm long, 86.5 mm diameter, 870 g
- Front barrel moves without rotating so that a polarising filter keeps its setting (Mamiya's 2008 lens page); petal-shaped bayonet hood
- Mamiya Zoom AF 55-110mm f/4.5: The only version. Not on Mamiya's earliest 645AF lens sheet of the 1999 launch, but present on the later sheet with the 35mm, 150mm, MF 120mm macro and 105-210mm zoom; the 645AFD instruction manual of the December 2001 body describes how the Mamiya 645 AF telephoto and zoom lenses switch to manual focus, and Popular Photography published its bench test in October 2002 with a list price of $2,659. Mamiya's 2008 lens page sells it at ¥180,000 before tax; camera-wiki's autumn 2008 list carries it as Zoom AF 55-110mm f/4.5 and the English Wikipedia table as the one AF zoom without a D. Mamiya Leaf's 2014 page no longer lists it. Phase One sold it under its own name while it lasted.
Specifications
- Formula
- 11 elements in 10 groups (Mamiya 645AF Interchangeable Lenses instruction sheet; Popular Photography, October 2002)
- Construction
- 11 elements / 10 groups
- Aperture range
- f/4.5–f/32
- Min. focus
- 1.5 m
- Dimensions
- 86.5 × 110 mm
- Weight
- 870 g
- Filter
- 67 mm
- Years manufactured
- 2001
- Country
- Japan
- Coating
- Multicoated: Mamiya America's lens brochure describes every element as coated with Mamiya's proprietary multi-coating process
- Original price
- ¥180,000 excluding tax (Mamiya's 645AFD II lens page, 2008); $2,659 list in 2002 (Popular Photography) (today ¥202,000)
What reviewers say
- Popular Photography, October 2002 ('Topnotch optical trio for Mamiya's 645AF', reprinted at ianbfoto.com) (blog) — Bench test with the 35mm and 105-210mm: centre and corner resolution excellent from f/4.5 to f/22 at 55, 75 and 110mm (49 to 61 lines/mm centre), very good to good at f/32; light falloff gone by f/8, flare very well controlled, noticeable barrel distortion at 55mm (1.25%) and minimal pincushion at 110mm; autofocus swift but moderately noisy. The verdict on the three: "an outstanding group of lenses".
- Tony Howell, tonyhowell.co.uk (Mamiya 55-110mm lens test) (blog) — On a Phase One 645AF with a 39-megapixel P45 back: good resolution, average corners, best at f/8 where the centre nearly matches his 120mm macro, fairly poor and "milky" wide open, better at 110mm than at 55mm, colour fringing in the corners at every aperture that software removes. 6 out of 10, "could be much better"; fine on film or smaller sensors, primes recommended for large ones.
History
The Zoom AF 55-110mm f/4.5 is the standard zoom of the Mamiya 645AF system, a 34–68mm equivalent on 6×4.5 film, and the autofocus counterpart of the manual-focus Zoom C 55-110mm f/4.5 N of the M645 mount, with which it shares its 11-in-10 construction, 1.5 m closest focus and 67 mm thread by Japanese Wikipedia. Mamiya’s instruction sheet gives a 65°–35° angle of view, a constant f/4.5 to f/32, 0.04–0.08× magnification, a bayonet petal hood, and 870 g in a barrel 110 mm long and 86.5 mm across; the front group moves without rotating, so a polariser keeps its setting. Like every lens on the AF bayonet it has no aperture ring and no motor of its own.
It was not in the 1999 launch line. Mamiya’s earliest 645AF lens sheet lists five lenses and no zoom; the later sheet adds the 35mm, the 150mm, the MF 120mm macro and the two zooms, Mamiya America’s brochure printed in February 2001 counts nine lenses available, and the manual of the 645AFD, the body of December 2001, explains how the AF zoom lenses switch to manual focus, so 2001 is the latest it can have arrived and the first year this page gives. Popular Photography’s bench test appeared in October 2002 at a list price of $2,659. It has one version: camera-wiki’s autumn 2008 list and the Wikipedia table both carry it without a D at a time when the 75-150 and several primes had D versions, and Mamiya’s 2008 page prices it at ¥180,000 before tax. By 2014 Mamiya Leaf’s page no longer listed it, the 45-90mm D and 75-150mm D having taken over its range.
The two reviews found disagree about how good it is, and the sensor explains the gap. Popular Photography’s 2002 test on film rated centre and corner resolution excellent from f/4.5 to f/22 at every focal length, with light falloff gone by f/8, flare well controlled, noticeable barrel distortion at 55mm and almost none at 110mm, and called the three lenses tested an outstanding group. Tony Howell, shooting a 39-megapixel back a decade later, found it fairly poor and milky wide open, best at f/8 where the centre nearly matched his 120mm macro, better at the long end than the short, with colour fringing in the corners at every aperture that software removes; he gave it 6 out of 10, a useful range that could be much better, and later replaced it with the 75-150mm D. On film at f/8 to f/11 the lens does the work of a 55, an 80 and a 110; on a large sensor its corners show.
When buying, check the rear electronic contacts, that the focusing collar slides cleanly between its autofocus and manual positions, that the zoom ring runs without stiffness, and that the body drives focus smoothly from 1.5 m to infinity. A 55-110 with an N on the ring and an aperture ring is the manual-focus lens, which fits the AF bodies only with stop-down metering; sellers write AF, 645AF, AFD and Phase One interchangeably, so the name ring decides.
What remains open: the release month, the aperture blade count, a discontinuation date, and Mamiya’s own yen price at launch.
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 645 AF Zoom 55-110mm f/4.5? We'd love to feature it (with credit).
Live listings
- Mamiya 55-110mm f4.5 AF
- 【ほぼ未使用】Mamiya 645 AF 55-110mm f/4.5 Zoom Lens for 645 AFD マミヤ レンズ #447
- 【動作良好美品★】Mamiya 645 AF Zoom AF 55-110mm F4.5 レンズ 中判カメラ用 #M12889
- 【中古】Mamiya マミヤ 645 ZOOM AF 55-110mm f/4.5
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 2026-11-02. Links go to the shop or marketplace that carries the item.