Mamiya Sekor Zoom AF 75-150mm f/4.5 D Aspherical
Mamiya · Mamiya 645 AF · 2007
Also known as: Mamiya Sekor Zoom AF 75-150mm f/4.5 D Aspherical · Mamiya 75-150mm f4.5 D Aspherical · Mamiya AF 75-150mm F4.5 D · Mamiya 645 AF 75-150mm f/4.5 · Mamiya 645AFD 75-150mm · Mamiya Sekor D 75-150mm · Phase One 75-150mm f/4.5 Zoom AF · Phase One AF 75-150mm f4.5 · マミヤ セコールズーム AF 75-150mm F4.5 D · マミヤ AF 75-150mm F4.5 D · マミヤ645AF 75-150mm
Variants & identification
| Variant | Mount | Years | Serial ranges | Production |
|---|---|---|---|---|
| Mamiya Sekor Zoom AF 75-150mm f/4.5 D Aspherical | Mamiya 645 AF | 2007 | — | — |
- Angle of view, aperture range, closest focus, filter thread, dimensions and weight are from Mamiya Leaf's lens page (archived 2014); dc.watch's 2007 reports give the 1 m closest focus and the 47–93mm equivalent (54–108mm on the ZD). Construction, 11 elements in 10 groups, is from the Japanese and English Wikipedia lists and Mamiya Leaf. Weight: 1,114 g on Mamiya Leaf's page, 1,140 g in the Wikipedia table.
- Prices: ¥378,000 at the April 2007 release (dc.watch, 7 May 2007) and on Mamiya's November 2009 list of prices replaced by open pricing; Japanese prices of the period include tax. No dollar list price was found in a source consulted.
- The Schneider-Kreuznach 75-150mm f/4-5.6 LS (Mamiya Sekor Zoom AF 75-150mm LS f/4) is a leaf-shutter zoom of the 645DF era with the same 11/10 construction and 1 m closest focus but an 86 mm thread and 1,700 g (Mamiya Leaf; Wikipedia); it is a different lens and not on this page.
- The aperture blade count and a discontinuation date are not given by any source consulted. Tony Howell's remark that the lens 'blows [the 55-110] out of the water' rests on his own limited use and the promised full test was not found.
How to tell them apart
- Sekor Zoom AF 75-150mm f/4.5 D Aspherical on the ring, 77 mm thread, no aperture ring; the manual-focus Sekor Zoom C 75-150mm f/4.5 of the M645 mount has an aperture ring and no D
- About 145 mm long, 86 mm across and 1.1 kg, focusing to 1 m; the Schneider 75-150 LS for the 645DF has a leaf shutter, an 86 mm thread and a variable f/4-5.6 aperture
Mamiya Sekor Zoom AF 75-150mm f/4.5 D Aspherical:
- Sekor Zoom AF 75-150mm f/4.5 D Aspherical on the name ring; 77 mm filter thread; no aperture ring; constant f/4.5 to f/32 (Mamiya Leaf; Wikipedia table)
- Mamiya Leaf's figures: 50°–26° angle of view, 1 m closest focus, 145 mm long, 86 mm across, 1,114 g; the Wikipedia table gives 1,140 g
- Only ever sold as a D lens: camera-wiki's autumn 2008 list and Mamiya Leaf's 2014 page carry it as Sekor Zoom AF 75-150mm f/4.5 D; a 75-150 without the D is the manual-focus Sekor Zoom C of the M645 mount
- Mamiya Sekor Zoom AF 75-150mm f/4.5 D Aspherical: The only version. Announced on 22 March 2007 with the Sekor AF 28mm f/4.5 D Aspherical as the first two lenses of the Mamiya Sekor D series for the Mamiya ZD and the 645AFD II, and on sale from 1 April 2007 at ¥378,000 (dc.watch, 22 March and 7 May 2007). Mamiya's notice of 2 May 2007 says some ZD and 645AFD bodies fail to show the aperture with this lens until a free software update is applied at a service centre, that the 645AFD II is already compatible, and that an original 645AF must be converted to AFD specification (¥18,900, or ¥7,350 for the software update) to use it. The November 2009 notice moving the Sekor D lenses to open pricing lists it at ¥378,000 and names the Mamiya ZD, 645AFD III and 645DF as the bodies for the series; Mamiya Leaf still sold it in 2014 beside the Schneider-designed 75-150mm f/4-5.6 LS, and Phase One sold it as the Phase One 75-150mm f/4.5 Zoom AF.
Specifications
- Formula
- 11 elements in 10 groups with aspherical surfaces (Japanese Wikipedia product list; English Wikipedia lens table; Mamiya Leaf)
- Construction
- 11 elements / 10 groups
- Aperture range
- f/4.5–f/32
- Min. focus
- 1 m
- Dimensions
- 86 × 145 mm
- Weight
- 1114 g
- Filter
- 77 mm
- Years manufactured
- 2007
- Country
- Japan
- Coating
- Multicoated; Mamiya America's lens brochure says every element is coated with Mamiya's proprietary multi-coating process, and Damien Demolder's 2015 field test says the D-era lenses carry coatings and an exit light path reworked for digital sensors (dpreview, cited on the AF 80mm page)
- Original price
- ¥378,000 (2007, tax included) (today ¥429,000)
What reviewers say
- Tony Howell, tonyhowell.co.uk (Mamiya 55-110mm lens test, closing remark) (blog) — Having just bought the Phase One-branded 75-150mm D for his 39-megapixel P45 back, he says that in limited use so far it "blows this one out of the water", meaning his 55-110, which "will have to go"; a full test was promised.
History
The Sekor Zoom AF 75-150mm f/4.5 D Aspherical is the short telephoto zoom of Mamiya’s Sekor D series, a 47–93mm equivalent on 6×4.5 film and 54–108mm on the Mamiya ZD’s sensor. Mamiya Digital Imaging announced it on 22 March 2007 with the Sekor AF 28mm f/4.5 D Aspherical as the first two lenses designed for its digital SLR, usable on the 645AFD II film body as well, and it went on sale on 1 April 2007 at ¥378,000. The design is 11 elements in 10 groups with aspherical surfaces, a constant f/4.5 to f/32, 1 m closest focus, a 77 mm thread, and by Mamiya Leaf’s figures a 50°–26° angle of view in a barrel 145 mm long and 86 mm across weighing 1,114 g (Wikipedia’s table says 1,140 g). It was never sold without the D: it replaced nothing in the AF line, the manual-focus Sekor Zoom C 75-150mm f/4.5 of the M645 mount being a different lens on a different mount.
The early D lenses tripped over the older bodies. Mamiya’s notice of May 2007 says some ZD and 645AFD bodies would not show the aperture with this lens until a free software update, that the 645AFD II needed nothing, and that an original 645AF had to be converted to AFD specification, for ¥18,900, before it could use the lens at all. The 645AFD III of April 2008 took the D lenses from the start, Mamiya’s specification page quoting its metering range with a D lens fitted, and the November 2009 notice that moved the Sekor D series to open pricing names the ZD, the 645AFD III and the 645DF as its bodies. The lens outlived the film cameras: Mamiya Leaf still listed it in 2014 as a studio portrait zoom that lets the photographer crop in the camera, next to the Schneider-designed 75-150mm f/4-5.6 LS leaf-shutter zoom, and Phase One sold it as the Phase One 75-150mm f/4.5 Zoom AF.
The one published opinion found is Tony Howell’s, at the foot of his test of the older 55-110mm on a 39-megapixel back: he had just bought the Phase One-branded 75-150 D and said that in limited use it blew the 55-110 out of the water, so the 55-110 would have to go. The full test he promised was not found, so that verdict stands as a first impression from a landscape photographer who shoots at f/8 to f/11 from a tripod.
When buying, check the rear electronic contacts, that the zoom and focus rings run freely, that the distance ring slides cleanly between its autofocus and manual positions, and that the body reports the lens and its aperture; an unconverted 645AF or an un-updated early AFD will not. The LS version has a leaf shutter, a variable aperture and an 86 mm thread and is a different lens; the manual-focus Zoom C 75-150 has an aperture ring and no D.
What remains open: the aperture blade count, a dollar list price, a discontinuation date, and the full test Tony Howell promised.
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 Zoom AF 75-150mm f/4.5 D Aspherical? We'd love to feature it (with credit).
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