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

Mamiya 645 AF 210mm f/4

Mamiya · Mamiya 645 AF · 1999

single source, unconfirmed

Also known as: Mamiya AF ULD 210mm f/4 IF · Mamiya 645AF 210mm f4 ULD · Mamiya 645 AF 210mm f/4 · Mamiya AF 210mm F4 IF ULD · Mamiya 210mm f/4 ULD IF AF · Mamiya AF 210mm f/4 D · Phase One 210mm f/4 D · マミヤ AF 210mm F4 IF ULD · マミヤ645AF 210mm F4 · マミヤ AF 210mm F4 D

Variants & identification

Variant Mount Years Serial ranges Production
Mamiya AF ULD 210mm f/4 IF (1999 original) Mamiya 645 AF 1999 — —
Mamiya AF 210mm f/4 D ULD IF Mamiya 645 AF — — —
  1. Element count, angle of view, closest focus, magnification, filter size, dimensions and weight for the original are from Mamiya's 645AF Interchangeable Lenses instruction sheet (cameramanuals.org); the D lens's figures come only from the Wikipedia lens table, which matches Mamiya's figures for the original.
  2. The two Mamiya sheets, Wikipedia, camera-wiki and the Popular Photography test all know one 210mm lens, the ULD IF; Japanese Wikipedia's product list carries an extra AF 210mm F4 IF entry that no other source consulted confirms.
  3. No source consulted gives the aperture blade count, a list price, or the year of the D version.
How to tell them apart (expand)
  • AF ULD 210mm f/4 IF, with or without D, on the name ring; built-in hood; no aperture ring, unlike the manual-focus Sekor C 210mm f/4 of the M645 mount
  • Both versions are 7 elements in 5 groups, focus to 2 m and take 58 mm filters (Mamiya sheet; Wikipedia table)

Mamiya AF ULD 210mm f/4 IF (1999 original):

  • Name ring reads AF ULD 210mm f/4 IF; built-in sliding hood rather than a detachable one; no aperture ring (Mamiya instruction sheet)
  • Mamiya's instruction sheet: 7 elements in 5 groups, 19° angle of view, f/32 minimum, 2.0 m closest focus, 0.13× magnification, 58 mm filter, 141 mm long, 86 mm diameter, 750 g
  • Focus collar slides forward for AUTO FOCUS and back for manual; the 645AFD manual says all the telephoto and zoom lenses switch this way without touching the body's focus mode lever

Mamiya AF 210mm f/4 D ULD IF:

  • D after the aperture on the name ring
  • Wikipedia's lens table gives the D the same 7 elements in 5 groups, 2.0 m closest focus, 58 mm filter and 750 g as the original

Specifications

Formula
7 elements in 5 groups with ULD glass and internal focusing (Mamiya 645AF Interchangeable Lenses instruction sheet)
Construction
7 elements / 5 groups
Aperture range
f/4–f/32
Min. focus
2 m
Dimensions
86 × 141 mm
Weight
750 g
Filter
58 mm
Years manufactured
1999
Country
Japan
Coating
Multicoated: Mamiya America's 2000 lens brochure describes every element as coated with Mamiya's proprietary multicoating; the D lens carries coatings redesigned for digital sensors (dpreview, 2015)

What reviewers say

History

The AF ULD 210mm f/4 IF is the long telephoto of the Mamiya 645AF launch line of 1999, a 19° lens that stands in for a 128mm on 35mm film. Mamiya’s instruction sheet gives seven elements in five groups, one of them of ultra-low-dispersion glass, f/32 minimum, 2 m closest focus at 0.13×, a 58 mm filter thread shared with the 80mm and 150mm, a built-in hood, 141 mm length, 86 mm diameter and 750 g. Focusing is internal, so the length and balance do not change, and the focus collar slides forward for autofocus and back for manual without touching the body’s focus mode lever. Like every lens of the mount it has no aperture ring. It is a different lens from the manual-focus Sekor C 210mm f/4 of the M645 mount and from the Mamiya 7’s N 210mm f/8.

Two versions exist and the name ring sorts them. The original is engraved AF ULD 210mm f/4 IF and appears on both of Mamiya’s 645AF lens sheets and on camera-wiki’s autumn 2008 list. The AF 210mm f/4 D ULD IF followed in the Phase One era: Wikipedia lists it with the same 7/5 construction, 2 m closest focus, 58 mm filter and 750 g, so the change is the D treatment, which Wikipedia glosses as optimisation for digital sensors and which Damien Demolder’s 2015 field test describes as redesigned coatings and an adjusted exit light path behind film-era barrels. Japanese Wikipedia’s product list also carries a plain AF 210mm F4 IF next to the ULD lens; no other source consulted confirms a non-ULD version, and both Mamiya sheets show only the one. No source dates the D.

Popular Photography’s April 2000 bench test is the one hard measurement: centre resolution excellent from f/4 to f/16, with 77 lines/mm wide open, dropping to good at f/22 and f/32, and corners excellent from f/4 to f/11 before falling with diffraction to acceptable at f/32, figures that beat the Contax Sonnar 210mm f/4 at the wider apertures. Michael Reichmann, shooting the 210mm on a Phase One 645 with a digital back in 2009, grouped it with the other Mamiya lenses that all performed very well. The complaints in the reviews are about the bodies’ single centre focus point and poor continuous autofocus rather than the lens, and Spencer Lookabaugh’s remark that autofocus with the longer telephotos is questionable applies here.

When buying, slide the built-in hood to make sure it moves freely and stays put, check the rear electronic contacts for corrosion, and confirm that the focus collar clicks between its two positions and that the body drives the focus smoothly across the range, since the drive coupling carries a long throw on this lens. Listings mix AF, 645AF, AFD and Phase One, and the Zoom AF ULD 105-210mm f/4.5 shares the ULD name.

What remains open: the aperture blade count, list prices, the year of the D version, and whether the plain AF 210mm F4 IF in Japanese Wikipedia’s list ever existed as a separate lens.

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 210mm f/4? We'd love to feature it (with credit).

Live listings

Asking price, USD: a median of $230 across 20 fixed-price listings on 2026-09-21 (middle half $170–$270). First day tracked.

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

Show 14 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 645 AF 35mm f/3.5 · Mamiya 645 AF 45mm f/2.8 · Mamiya 645 AF 80mm f/2.8 · Mamiya 645 AF 120mm f/4 Macro · Mamiya 645 AF 150mm f/3.5

Sources (11)

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.