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

Mamiya 645 AF Zoom ULD 105-210mm f/4.5

Mamiya · Mamiya 645 AF · 2001

Also known as: Mamiya Zoom AF ULD 105-210mm f/4.5 · Mamiya 645AF 105-210mm f4.5 ULD · Mamiya 645 AF 105-210mm f/4.5 · Mamiya AF 105-210mm F4.5 ULD · Mamiya 105-210mm f/4.5 AF ULD · Mamiya AF ULD 105-210mm · Mamiya 645AFD 105-210mm · Phase One 105-210mm f/4.5 AF · Phase One AF ULD 105-210mm · マミヤ ズーム AF ULD 105-210mm F4.5 · マミヤ AF 105-210mm F4.5 · マミヤ645AF 105-210mm

Variants & identification

Variant Mount Years Serial ranges Production
Mamiya Zoom AF ULD 105-210mm f/4.5 Mamiya 645 AF 2001 — —
  1. 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, Mamiya Leaf's 2014 page and the Wikipedia table (990 g). Popular Photography measured 106.23–208.56mm and f/4.7 and weighed it at 2 lb 2 5/16 oz.
  2. The 2001 first year is bounded, not announced: the lens is absent from Mamiya's launch-era lens sheet, Mamiya America's brochure printed in February 2001 counts nine lenses then available, 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.
  3. Prices: $2,659 list and about $1,700 street in Popular Photography's October 2002 test; ¥193,000 excluding tax on Mamiya's 645AFD II lens page of 2008. The yen figure is carried as the maker's own price.
  4. The English Wikipedia table lists the lens as '105-210mm f/4.5 AF D ULD zoom' with Mamiya's figures. No other source consulted knows a D version: Mamiya's 2008 page, camera-wiki's autumn 2008 list, the November 2009 Sekor D price list and Mamiya Leaf's 2014 page all carry it without a D. The row is recorded here as unconfirmed rather than as a variant.
  5. The manual-focus Mamiya-Sekor Zoom ULD C 105-210mm f/4.5 of the M645 mount has the same 13-in-11 construction and 58 mm filter but a 1.8 m closest focus, an aperture ring and a different mount; it is a different page.
  6. No source consulted gives the aperture blade count or a discontinuation date.
How to tell them apart (expand)
  • Zoom AF ULD 105-210mm f/4.5 on the ring with no C and no D, no aperture ring, 58 mm thread; a 105-210 marked ULD C with an aperture ring is the manual-focus lens of the M645 mount
  • 158 mm long, 82 mm across and 990 g, 13 elements in 11 groups, focusing to 1.5 m (Mamiya sheet); the manual-focus lens focuses only to 1.8 m
  • The longest of the AF zooms; the 75-150 D is shorter, wider and takes 77 mm filters

Mamiya Zoom AF ULD 105-210mm f/4.5:

  • Name ring reads Zoom AF ULD 105-210mm f/4.5 without a C or a D; no aperture ring; focal lengths engraved at 105, 120, 140, 170 and 210 on the zoom ring at the rear, the wide focusing collar in front (Popular Photography, 2002)
  • Mamiya's instruction sheet: 13 elements in 11 groups, 36°–19° angle of view, f/32 minimum, 150 cm closest focus, 0.09–0.18× magnification, 58 mm filter, bayonet hood, 158 mm long, 82 mm diameter, 990 g
  • Front group moves without rotating for polarisers (Mamiya's 2008 lens page); 58 mm thread where the 55-110 takes 67 mm and the 75-150 D takes 77 mm

Specifications

Formula
13 elements in 11 groups with ULD (ultra-low-dispersion) glass (Mamiya 645AF Interchangeable Lenses instruction sheet; Popular Photography, October 2002)
Construction
13 elements / 11 groups
Aperture range
f/4.5–f/32
Min. focus
1.5 m
Dimensions
82 × 158 mm
Weight
990 g
Filter
58 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
¥193,000 excluding tax (Mamiya's 645AFD II lens page, 2008); $2,659 list in 2002 (Popular Photography) (today ¥216,000)

What reviewers say

Optical Ratings

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

Chromatic aberration
corners, correctable
Distortion
slight pincushion

History

The Zoom AF ULD 105-210mm f/4.5 is the telephoto zoom of the Mamiya 645AF system, a 65–130mm equivalent on 6×4.5 film, and the autofocus counterpart of the manual-focus Zoom ULD C 105-210mm f/4.5 of the M645 mount, with which it shares its 13-in-11 construction and 58 mm thread while focusing closer, to 1.5 m against 1.8 m. Mamiya’s instruction sheet gives a 36°–19° angle of view, a constant f/4.5 to f/32, 0.09–0.18× magnification, a bayonet hood, and 990 g in a barrel 158 mm long and 82 mm across; the ULD in the name is the ultra-low-dispersion glass Mamiya credits with clean, high-contrast images, and the front group moves without rotating so that a polariser keeps its setting. No aperture ring, no motor in the lens.

It was not in the 1999 launch line. Mamiya’s earliest 645AF lens sheet lists five lenses and no zoom; the later sheet adds it with the 35mm, 150mm, MF 120mm macro and 55-110mm, Mamiya America’s brochure of February 2001 counts nine lenses available, the 645AFD manual of December 2001 explains how the AF zooms switch to manual focus, and Popular Photography tested it in October 2002 at a list price of $2,659. It has one version: Mamiya’s 2008 page prices it at ¥193,000 before tax, camera-wiki’s autumn 2008 list and Mamiya Leaf’s 2014 page both carry it as Zoom AF ULD 105-210mm f/4.5 without a D, and the November 2009 Sekor D price list does not include it. Only the English Wikipedia table calls it a D lens, with Mamiya’s own figures, and that row is noted rather than taken as a second version. It outlived the 55-110 in the line and Phase One sold it under its own name.

Reviewers like it better than the 55-110. Popular Photography’s 2002 bench test found centre resolution excellent from f/4.5 to f/22 at every focal length, peaking at 72 lines/mm at f/8 and 105mm, corners excellent to f/11, distortion minimal at the short end and slight pincushion at 210mm, and slides sharp and contrasty except for slight softness at 210mm wide open and at f/32. Tony Howell, on a 39-megapixel back, found good resolution and good corners with the centre at f/8 very close to his 120mm macro, average performance wide open, the long end better than the short, and corner colour fringing that software removes; he gave it 8 out of 10 as a lens he uses a lot at f/8 to f/11 from a tripod, and warned that the depth of field at 210mm on medium format is very shallow.

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 through its 80° travel, and that the body drives focus from 1.5 m to infinity without hunting. A 105-210 marked ULD C with 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 ring decides.

What remains open: the release month, the aperture blade count, a discontinuation date, Mamiya’s own yen price at launch, and whether the Wikipedia D row describes anything Mamiya sold.

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 645 AF Zoom ULD 105-210mm f/4.5? We'd love to feature it (with credit).

Live 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 2026-11-02. Links go to the shop or marketplace that carries the item.

Related: Mamiya 645 AF 150mm f/3.5 · Mamiya 645 AF 210mm f/4 · Mamiya 645 AF APO 300mm f/4.5 IF · Mamiya 645 AF Zoom 55-110mm f/4.5 · Mamiya Sekor Zoom AF 75-150mm f/4.5 D Aspherical · Mamiya-Sekor Zoom C 105-210mm f/4.5 (645)

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.