Industar-61 50mm f/2.8

FED · LTM + M42 · 1958

single source, unconfirmed

Also known as: Industar-61 · Industar 61 · Industar-61 2.8/52 · Industar-61 2.8/53 · Industar-61 2.8/55 · Industar-61 L/D · Industar 61 L/D · Industar-61L/D · Industar 61L/D · Industar-61 LD · Industar 61 LD · Industar 61LD · Industar-61L · Industar 61L · I-61 L/D · I-61 LD · I-61LD · FED Industar-61 · FED Industar 61 · Industar 61 LTM · Industar-61 M39 · Industar-61 L/Z · Industar 61 L/Z · Industar-61L/Z · Industar 61 LZ · Industar-61 L/Z MC · Индустар-61 · Индустар-61 Л/Д · Индустар-61Л · Индустар-61 Л/З · И-61 · И-61Л/Д

Variants & identification

Variant Mount Years Serial ranges Production
GOI prototype (OB-197), Leica thread LTM 1958–1960 62010 — Leitz Photographica Auction 37 (21 November 2020), lot 490, 'GOI f. M39 Industar-61 2.8/50mm prototype', dated 1962 by Leitz; condition A; estimate €1,400–1,600, starting price €700, sold for €4,320 including premium 'Very few samples' (sovietcams); no figure published
FED Industar-61 2.8/52, 'Panda' LTM 1962–1965 #000104 — sovietcams' earliest recorded production lens, six digits with no year in front (PT4710, 1962–1964)
#6496741 — 1964, the same lens with the year prefix (PT4715, 1964–1965)
No figure published; sovietcams calls it easy to find
Industar-61 2.8/52 made by MMZ (Belarus) LTM 1964–1964 #400420 — sovietcams' earliest recorded example (R. Teterev collection); #400451 illustrated 'Only very few samples are known to exist in collections' (sovietcams)
Industar-61 2.8/50, solid barrel (LZOS) LTM 1964–1967 #64073 — sovietcams' earliest recorded example (I. Stolyar collection) 'Very limited batches' (sovietcams)
Industar-61L 2.8/50 (LZOS by sovietcams; GOI by Leitz) LTM 1964–1967 #64193 — sovietcams' earliest recorded example (private collection); #64279 illustrated
64829 (engraved №64829) — Leitz Photographica Auction 49, lot 455, 'GOI f. M39 Industar-61L 2.8/50mm', dated 1964 by Leitz, condition A-; estimate €5,000–6,000, starting price €2,400; to be offered on 28 November 2026 at Wetzlar, with no bids recorded on 9 November 2026
'Very limited batches' (sovietcams); 'very limited batches' (Leitz lot 455)
FED Industar-61 2.8/52, 'Zebra' LTM 1965 #6519988 — 1965, sovietcams' earliest recorded example (PT4735, 1965–1972)
#2116852 — October 1972 by sovietcams, on the one-digit year code (PT4740)
8xxxxxx — the code sovietcams dates to 1973–1975, 'unconfirmed' (PT4745)
#8672344 — the later barrel with a cored triangle on the distance index (PT4750)
#8750565 — engraved 5,3cm instead of 5,2cm (PT4755)
No figure published; sovietcams calls it very common
FED И-61Л/Д, black, Cyrillic engraving LTM — #8963155 — sovietcams' earliest recorded 5,3cm lens (PT4760)
#9488737 — sovietcams' illustrated 5,3cm lens
#8306858 — sovietcams' earliest recorded 5,5cm lens (PT4765, eBay 2016); #8445917 illustrated
No figure published; sovietcams calls it very common
FED Industar-61L/D, Latin engraving, new FED logo LTM — #8692501 — sovietcams' earliest recorded example (PT4770), which would be 1986 on sovietcams' statement that the first two digits give the year No figure published
FED Industar-61 L/D 2.8/55 prototype for the FED-6 TTL (1992) LTM 1992–1992 #9200001 — sovietcams' earliest recorded example (B. Parkinson collection); #9200008 (I. Stolyar collection) illustrated
9200009 — Leitz Photographica Auction 47 (22 November 2025, Vienna), lot 491, 'FED f. M39 Industar-61 L/D 2.8/55mm prototype', dated 1992; estimate €6,000–7,000, starting price €3,000; unsold
A few prototypes (Leitz lot 491); 'even few known samples within this type differ visually' (sovietcams)
Industar-61 L/Z and L/Z MC (LZOS, M42) M42 — — No figure published
  1. Who made the Industar-61L. sovietcams gives the solid-barrelled Industar-61 and Industar-61L of 1964–1967 to LZOS; Leitz Auction 49 titles lot 455, a lens of exactly that description, as GOI. GOI calculated the design (Abramov; sovietcams; Russian Wikipedia) and made the 1958–60 prototypes (sovietcams), and LZOS was a production plant; the lot photographs show no maker's mark on the lens. Neither attribution is documented beyond the assertion.
  2. GOI prototype dates. sovietcams dates the GOI-made samples 1958–1960; Leitz dated its GOI prototype, number 62010, to 1962. Nothing reconciles them.
  3. Lanthanum. Russian Wikipedia, citing Volosov (1978), says both positive elements are of the lanthanum super-heavy crown STK-6, and sovietcams says the glass of all Industar-61 lenses contains lanthanum; Leitz says the L means lanthanum. Kamerastore instead speaks of 'radioactive lanthanum coatings' on the L/D. JAPB measured its L/Z and found nothing above background radiation, and declines to confirm or deny the lanthanum reading of the L.
  4. The M42 lens. This page treats the LZOS L/Z as a mount version of the same design: Abramov and Russian Wikipedia list it among the Industar-61 versions under the one GOI calculation, and no source consulted gives it a different optical formula. Its closest focus (0.3m) is its own; the 1m given for the family is the rangefinder lenses'.
  5. Versions recorded but not tabled. Russian Wikipedia and Abramov also list a KMZ Industar-61-З for M39 Zenits, a KMZ Industar-61M in M42 with an A-M switch, an Industar-61A with an aspheric front surface that Abramov says was not mass-produced, and lenses for the FED-10 and FED-11 Atlas, on which the two disagree: Russian Wikipedia has a bayonet lens for the FED-10 and a fixed lens on the FED-11, Abramov a fixed lens on the FED-10 and a 'formally fixed' bayonet lens on the FED-11. No physical example or primary source for them was found, and they are left out of the table.
  6. End date. No source gives one for the regular lens. The latest dated version is the 1992 prototype; JAPB's family dates read '1971–≈?'.
  7. Aperture blades. Kamerastore, JAPB and Howard Hurd count six on the FED and LZOS L/Z lenses; Russian Wikipedia gives the LZOS Industar-61 L in Leica thread twelve, and Leitz's rear photograph of lot 455 shows a diaphragm of far more than six blades.
How to tell them apart (expand)
  • A four-element, three-group Tessar type; the barrel engraving reads 5cm, 5,2cm, 5,3cm or 5,5cm according to version, for a calculated focal length of 52.42mm (Russian Wikipedia; Abramov)
  • Named Industar-61, И-61, Индустар-61 or Industar-61L/D on the faceplate. The Industar-26M, Industar-22, Industar-50 and Industar-50-2 are other 50mm Tessar types for the same cameras, with designs of their own
  • Letters after the number: Л/L lanthanum glass, Д/D rangefinder version, З/Z SLR version, МС/MC multi-coated (Russian Wikipedia)

GOI prototype (OB-197), Leica thread:

  • Factory designation OB-197; focal length 5.2cm, aperture f/2.8 to f/22, focusing from 1m (sovietcams, from the 1963 GOI catalogue)
  • Rangefinder-coupled M39 mount (Leitz lot 490); sovietcams calls it Zorki (M39) mount

FED Industar-61 2.8/52, 'Panda':

  • Focal length 5.2cm; aperture f/2.8 to f/22, the scale without click stops (sovietcams)
  • Focusing scale in metres: 1-1.4-2-2.8-4-5.6-8-11-22 and infinity (sovietcams)

Industar-61 2.8/52 made by MMZ (Belarus):

  • Almost identical to the FED Panda: 5.2cm, f/2.8 to f/22, the same metre scale 1-1.4-2-2.8-4-5.6-8-11-22 (sovietcams)
  • Six-digit serial beginning 400, which carries no year

Industar-61 2.8/50, solid barrel (LZOS):

  • 'Industar-61' and '2.8/50' on the faceplate, with no L; a solid barrel unlike any FED lens (sovietcams)
  • Focal length 5cm, aperture f/2.8 to f/16; focusing scale in metres 1-1.1-1.2-1.3-1.5-1.7-2-2.5-3-4-6-12 and infinity (sovietcams)
  • Five-digit serial whose first two digits are the year (sovietcams)

Industar-61L 2.8/50 (LZOS by sovietcams; GOI by Leitz):

  • Faceplate engraved 'ИНДУСТАР-61Л 2,8/50' in Cyrillic, and the number '№64829' on the front of the bezel (Leitz lot 455 photographs); no maker's logo shows in those photographs
  • Chrome barrel with a knurled aperture ring scaled 2,8-4-5,6-8-11-16 and a red dot index, a depth-of-field scale, and a distance scale in metres to 1m (Leitz lot photographs); 'identical' to the LZOS Industar-61 without the L apart from the name (sovietcams)
  • Rangefinder-coupled M39 mount (Leitz)

FED Industar-61 2.8/52, 'Zebra':

  • Old FED logo on the faceplate; focal length 5,2cm, aperture f/2.8 to f/16 with click stops (sovietcams)
  • Focusing scale in metres 1-1.1-1.2-1.3-1.5-1.7-2-2.5-3-4-5-7-10-20 and infinity (sovietcams)
  • A white triangle on the distance index, later a cored triangle; the last of these lenses are marked 5,3cm (sovietcams)

FED И-61Л/Д, black, Cyrillic engraving:

  • Black barrel with 'И-61Л/Д' on the faceplate and the old FED logo (sovietcams)
  • Engraved 5,3cm (PT4760) or, from 1980, 5,5cm (PT4765); aperture f/2.8 to f/16 with click stops (sovietcams)
  • Takes 40.5mm filters; six aperture blades (Kamerastore)

FED Industar-61L/D, Latin engraving, new FED logo:

  • 'Industar-61L/D' in Latin letters on the faceplate and the new FED logo; otherwise the 5,5cm black lens (sovietcams)

FED Industar-61 L/D 2.8/55 prototype for the FED-6 TTL (1992):

  • A barrel totally different from the regular Industar-61 (sovietcams); seven-digit serial beginning 92

Industar-61 L/Z and L/Z MC (LZOS, M42):

  • 'Л/З' or 'L/Z' after the name, З for the SLR version; 'МС' or 'MC' on the multi-coated lens (Russian Wikipedia)
  • M42 thread; 2.8/50 on the LZOS lens (Abramov). Abramov says the SLR versions have a 'jumping' (automatic) diaphragm and Russian Wikipedia gives one to KMZ's Industar-61M, but JAPB records its own L/Z as a manual, clickless aperture
  • A long helical that focuses to 0.3m without extension tubes (Russian Wikipedia, after Sovetskoe Foto 1985); 29cm, 1:3.4 (JAPB)
  • 49mm filter thread, 214g, six blades (JAPB, measured on its own lens)

Serial-range notes

the first two digits
The general rule, and sovietcams states it for this lens version by version: on the 1964–65 FED Panda, the LZOS lenses, the 1965–72 Zebra and the black L/D from 1980, the first two digits of the serial are the year (#6496741 is 1964, #6519988 is 1965). The LZOS lenses carry it in only five digits: #64073, #64193, #64279 and Leitz's 64829 are all 1964 by this reading, and Leitz dates 64829 to 1964 independently.
#000104, #400420 — six digits with no year
The first FED Panda lenses (sovietcams' earliest #000104) were numbered from zero with no year in front, and the 1964 MMZ lenses run from 400420; neither can be dated from its number.
#2116852 — one digit
From 1972 FED changed the coding so that only the first digit gave the year: 2 for 1972 (sovietcams). #2116852 is an October 1972 lens.
8xxxxxx — the 8-prefix code
sovietcams records a code in which every serial starts with 8, dates it to 1973–1975 'unconfirmed', and says its meaning is unclear. It collides with the two-digit rule: an 8 followed by another digit reads as a year of the 1980s. sovietcams' own numbers do not sort cleanly either way — the 5,3cm black lens has an earliest number #8963155 while the 5,5cm lens that replaced it 'since 1980' has #8306858 — so a FED Industar-61 serial beginning 8 is not safely dated from the number alone.
#92000xx
The 1992 FED-6 TTL prototypes: sovietcams records #9200001 and #9200008, Leitz offered 9200009. Seven digits with the year in front.

Specifications

Formula
Tessar type, four elements in three groups (Abramov; sovietcams; Russian Wikipedia)
Designed by
Slyusarev Georgy — calculated the lens at GOI with V. Sokolova (Abramov; Russian Wikipedia, after Volosov 1978) · Sokolova V. — calculated the lens at GOI with G. Slyusarev (Abramov; Russian Wikipedia)
Construction
4 elements / 3 groups
Aperture range
f/2.8
Min. focus
1 m
Filter
40.5 mm (FED И-61Л/Д, black, Cyrillic engraving) · 49 mm (Industar-61 L/Z and L/Z MC (LZOS, M42))
Years manufactured
1958
Country
Soviet Union (FED, Kharkiv, Ukrainian SSR; also LZOS at Lytkarino, MMZ in Belarus and GOI in Leningrad)
Coating
Single-coated; the LZOS Industar-61 L/Z MC is multi-coated (Russian Wikipedia: МС, 'многослойное ахроматическое просветление')

What reviewers say

History

The Industar-61 is a four-element Tessar type calculated at GOI, the State Optical Institute in Leningrad, by G. Slyusarev and V. Sokolova. Russian Wikipedia, after Volosov, says both positive elements are of the lanthanum crown STK-6, glass that gave the same power with flatter curves, and a 1963 Sovetskoe Foto article quoted there credits the lens with sharpness more even across the frame than the older Industars, whose resolution fell away quickly towards the edges. Its calculated focal length is 52.42mm; barrels are engraved 5cm, 5,2cm, 5,3cm or 5,5cm according to version, which is why sellers list the same lens at four focal lengths.

GOI made a few samples, designated OB-197, in 1958–1960 by sovietcams’ account. FED at Kharkiv put the lens into production in 1962 in place of the Industar-26M on the FED-2, FED-3 and FED-4. The Industar-26M, the folding Industar-22 and the Industar-50 that sit on the same cameras are separate designs and are not covered here. The first FED lens, which collectors call the Panda, stops down to f/22 and has no click stops. MMZ in Belarus made a small batch in 1964. From 1965 the Zebra, with clicks and an f/16 limit, became the common lens of the late 1960s and 1970s, and the black И-61Л/Д of the FED-3, FED-4 and FED-5 followed, engraved first 5,3cm and from 1980 5,5cm. The last regular version has the name in Latin letters and the new FED logo. In 1992 FED made a few prototypes in a quite different barrel for the FED-6 TTL, which never reached production.

Between the Panda and the Zebra sits the rarest production lens: a solid chrome lens engraved 2,8/50, made in very limited batches in 1964–1967, with and without an L after the name. sovietcams gives it to LZOS. Leitz Auction 49 offers one of the L lenses, №64829, on 28 November 2026 as lot 455, titled as a GOI lens, at an estimate of €5,000–6,000 and a starting price of €2,400. It is engraved ИНДУСТАР-61Л 2,8/50, comes with its bakelite rear cap and a keeper still carrying a shop sticker, which Leitz renders as “photo lens Industar-61 for Zorki cameras, price 16 Rubles”, and its number dates it to 1964 by the usual reading. The lot text does not explain the GOI attribution, and nothing on the lens names its maker. For comparison, Leitz sold a GOI prototype, 62010, for €4,320 in November 2020; a 1992 FED prototype, 9200009, failed to sell at an estimate of €6,000–7,000 in November 2025.

LZOS also made the lens in M42 thread for Zenit SLRs as the Industar-61 L/Z, and later the multi-coated L/Z MC. Abramov and Russian Wikipedia treat it as the same GOI calculation in another mount. On the SLR lens a long helical brings closest focus to about 0.3m, against 1m on the rangefinder lenses. KMZ’s Industar-61-З and 61M for Zenits are recorded in the same sources but have not been seen here.

When dating a lens, read the first two digits of the serial as the year, but not without checking. The earliest FED and MMZ lenses carry no year, FED used a one-digit year code in 1972, and an unexplained code starting with 8 makes any FED serial beginning 8 ambiguous.

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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 Industar-61 50mm f/2.8
Industar-61 L/D for rangefinder cameras (Andshel, 2010) — Andshel, via Wikimedia Commons (Public domain (released by the uploader))
Sample photo taken with the Industar-61 50mm f/2.8
Industar-61 L/Z-MC for M42 SLRs (PereslavlFoto, 2009) — PereslavlFoto, via Wikimedia Commons (CC BY-SA 3.0)

Sample photo wanted — shot with a Industar-61 50mm f/2.8? We'd love to feature it (with credit).

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