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

EBC Fujinon-T 100mm f/2.8

Fuji Photo Film · Fujica ST + Fujica X · 1970

single source, unconfirmed

Also known as: Fujinon-T 100mm f/2.8 · EBC Fujinon-T 100mm F2.8 · EBC FUJINON T 1:2.8 f=100mm · Fujica 100mm f2.8 EBC · Fuji Fujinon 100mm 2.8 M42 · X-Fujinon-T 100mm f/2.8 DM · EBC X-FUJINON T 100mm 1:2.8 DM · フジノン 100mm F2.8 · EBC フジノン T 100mm F2.8 · XフジノンT 100mm F2.8 DM

Variants & identification

Variant Mount Years Serial ranges Production
Fujinon-T 100mm f/2.8, single-coated (plain M42, stop-down) Fujica ST 1970–1972 — —
EBC Fujinon-T 100mm f/2.8, multicoated, Fujica M42 with the metering tab Fujica ST 1972–1980 — —
EBC X-Fujinon-T 100mm f/2.8 DM, Fujica X bayonet Fujica X 1979–1985 — —
  1. Fuji's own figures are the X-mount brochure's (5 elements in 4 groups, f/22, 1.0 m, 245 g, 61.5 × 61.5 mm, 49 mm) and the Japanese Wikipedia product list agrees for both mounts. The M42 lens is given 254 g and 1 m by allphotolenses and 280 g, 1.20 m and 30° by the French M42 blog; the Japanese list's single-coated open-aperture lens also says 1.2 m. Whether the early helicoid really stopped at 1.2 m is unresolved; the family field carries Fuji's 1.0 m.
  2. Six aperture blades on allphotolenses and the French M42 blog; no Fuji document consulted states the count. Length and diameter are the brochure's, for the X lens.
  3. No launch price found in any source read; the ST701 manual, ST801 manual and the X brochure carry none.
  4. 1980 as the last M42 year is japb's "≈1970–80 (all versions)" for the line, not a date for this lens.
How to tell them apart (expand)
  • Three engravings in order: FUJINON·T (silver aperture ring, no tab), EBC FUJINON·T (black ring, tab, green EBC), EBC X-FUJINON·T … DM (bayonet, orange mark)
  • 49 mm filter on every version; the small size is what owners remark on first, 'as big as any other legacy 50mm lens'

Fujinon-T 100mm f/2.8, single-coated (plain M42, stop-down):

  • Name ring reads FUJINON·T 1:2.8 f=100mm with no EBC; a plain M42 thread with no coupling tab on the aperture ring, so it stops down to meter on every M42 body (the ST701's own way of working)
  • japb's account of the 1970–72 Fujinon M42 lenses: silver aperture ring and an all-metal knurled focusing ring, single coating
  • One of the six interchangeable lenses in the ST701 manual, with the 200mm f/4.5, 135mm f/3.5, 50mm f/1.4, 35mm f/2.8 and 28mm f/3.5

EBC Fujinon-T 100mm f/2.8, multicoated, Fujica M42 with the metering tab:

  • EBC FUJINON·T engraved on the name ring, the EBC in green (Arkku, M42 Fujinon group); black aperture ring and a rubberised diamond-pattern focusing grip, a ribbed grip on the last lenses (japb)
  • A small tab standing proud of the back of the aperture ring, which couples the ST801/ST901/AZ-1's open-aperture meter; it is often found filed off (camera-wiki, ST801)
  • A locking lever at the mount: the lens is unscrewed only after pressing it (Mike Eckman, ST801)
  • 49 mm filter; the ST801 manual's hood is shared with the 135mm f/3.5

EBC X-Fujinon-T 100mm f/2.8 DM, Fujica X bayonet:

  • Fujica X bayonet, 65° turn, 43.5 mm flange (AX-5 manual); X-FUJINON·T on the name ring with DM after the aperture
  • DM: an orange mark past f/22 on the aperture scale, and on the mount a full-aperture signal pin, an aperture keying lug and an auto/manual groove; the AX-5 manual says lenses without the mark do aperture-priority and manual only
  • Fuji's launch brochure: 5 elements in 4 groups, 24°, f/22, 1.0 m, 61.5 × 61.5 mm, 245 g, 49 mm filter, round screw-in hood

Specifications

Formula
5 elements in 4 groups on every version named in Fuji's own lists
Construction
5 elements / 4 groups
Aperture range
f/2.8–f/22
Diaphragm blades
6
Min. focus
1 m
Dimensions
61.5 × 61.5 mm
Weight
245 g
Filter
49 mm
Years manufactured
1970–1985
Country
Japan
Coating
single-coated Fujinon-T; EBC multicoating (Electron Beam Coating, up to 11 layers on key elements) from 1972

What reviewers say

Optical Ratings

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

Spherical aberration
soft wide open

History

The 100mm f/2.8 is the shortest of the Fujinon-T telephotos and was in the line from the start: the ST701 manual of 1970 lists six interchangeable lenses, and the Fujinon-T F2.8 100mm is one of them, with the 135mm f/3.5 and the 200mm f/4.5 above it. It is a 5-element, 4-group lens with a 49 mm filter, and Fuji’s X-mount brochure gives it 245 g and a barrel 61.5 mm across and 61.5 mm long, which is why every owner who writes about it says the same thing first: it is the size of a standard lens.

The versions follow the line’s three engravings. The first lens reads FUJINON·T, has a silver aperture ring and a metal focusing grip, is single-coated and is a plain M42 lens: it stops down to meter and fits anything with the thread. From late 1972, with the ST801, the lens became the EBC FUJINON·T, multicoated by Fuji’s Electron Beam Coating, with a black aperture ring, a rubber grip and a small tab on the back of the aperture ring that couples the ST801, ST901 and AZ-1 meters at full aperture. The Japanese product list also records a single-coated Fujinon 100mm F2.8 among the open-aperture lenses, with a 1.2 m close focus that the French M42 blog also measured on its lens against Fuji’s 1.0 m; nothing else consulted mentions it. In 1979 the same 5-in-4 lens went into the X bayonet as the EBC X-Fujinon-T 100mm f/2.8 DM, the DM parts (a signal pin, a keying lug and an orange mark on the aperture scale) letting the AX-3 and AX-5 run program and shutter-priority; no source says the glass changed.

Reviewers agree on the rendering and disagree on the sharpness. The French M42 blog finds the EBC coating good from full aperture and the bokeh soft but is let down by the sharpness and the six blades. In the Flickr M42 Fujinon group, one owner found it less sharp at f/2.8 than the 135mm f/2.5 at the same stop, while another thought the reverse; both agree the background is drawn with fine detail rather than blurred away. CharlesSong calls its bokeh the best he has seen on an M42 lens and its colour higher in contrast than a modern Canon 85mm f/1.8. Everyone notes how rarely it turns up.

Buying one: the lens is M42 screw-thread and works on any M42 body, but the EBC lens’s coupling tab can foul some non-Fujica bodies and adapters, stopping the lens screwing home and costing infinity focus; camera-wiki says tabs are often found filed off, and the Flickr thread on the conversion says most mirrorless adapters clear it anyway. The reverse problem exists too: an ordinary M42 lens with a wide flange can foul the Fujica bodies’ coupling. Check the six blades for oil; the tab itself is plastic on at least one lens (Phillloyd, in the Flickr conversion thread), so a filed one leaves no metal scar. On a DM lens check that the aperture ring still clicks into the orange mark. The X bayonet lived six years, so the X lens goes only to an AX or STX body or, with a control-ring adapter, to a mirrorless camera; its 43.5 mm flange rules out DSLRs without corrective glass. The launch price was not found in any source read.

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 EBC Fujinon-T 100mm f/2.8
Fujinon 100mm f/2.8, filed on Commons under X-Fujinon lenses; the uploader's caption is 'The elusive one' (Phil Sangwell) — Phil Sangwell, via Wikimedia Commons (CC BY 2.0)

Sample photo wanted — shot with a EBC Fujinon-T 100mm f/2.8? We'd love to feature it (with credit).

Live listings

Asking price, USD: a median of $220 across 3 fixed-price listings on 2026-09-20 (middle half $190–$220). First day tracked.

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

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 2026-09-20. Links go to the shop or marketplace that carries the item.

Related: EBC Fujinon-T 135mm f/2.5 · EBC Fujinon-T 135mm f/3.5 · EBC Fujinon-T 200mm f/4.5 · EBC Fujinon 50mm f/1.4 · EBC Fujinon Macro 55mm f/3.5 · Fujinon 55mm f/1.8

Sources (20)

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.