Helios-123 50mm f/1.4

Arsenal · Nikon F · 1990 · Seven elements in six groups

via machine translation — corrections welcome our own finding

Also known as: Helios-123 · Helios 123 · Helios-123N · Helios 123N · MC Helios-123 · MC Helios-123N · Helios-123N 50mm f/1.4 · Helios-123 1.4/50 · Гелиос-123 · Гелиос-123Н · МС Гелиос-123 · Arsat H 1:1.4 50mm · Arsat H 50mm f/1.4 · Arsat N 50mm f/1.4 · Arsat-H 1.4/50 · Arsat-N 1.4/50 · Arsat 50mm 1:1.4 H · Arsat 50mm f/1.4 · Arsat 50mm 1.4 · Arsat 50mm 1:1,4 · Arsat 1,4/50

Variants & identification

Variant	Mount	Years	Serial ranges	Production
MC Helios-123 (Cyrillic engraving)	Nikon F (Arsenal 'Н' bayonet of the Kiev-17/19/20)	1990	#900006, and a second lens whose number reads as #900012, both in the photographs on Abramov's page; the 90 prefix is 1990 by the Soviet year-first convention	A trial batch of 30, 'according to the information available' (Abramov); no other figure read
ARSAT H 1:1.4 50mm	Nikon F (Arsenal 'Н' bayonet of the Kiev-17/19/20)	—	#9500419 — 1995, the lens Arkadiy Shapoval reviewed for Radojuva in 2012	—

How many were made is unsettled. Abramov records a trial batch of 30 'according to the information available' and does not mention the Arsat name. Shapoval's Arsat lens is numbered 9500419, a 1995 lens by its prefix, and Digital Camera Watch listed the ARSAT-N 1.4/50 as a current Arsenal product in December 2005. The 30 may describe the Soviet-era Helios-123 alone; no source read says how many Arsat lenses followed.
The specification. Abramov gives 7 elements in 6 groups, a 49° field, 0.45 m and 0.27 kg. Shapoval gives f/1.4–16, 7/6, 270 g, 0.45 m and a 52mm filter for his Arsat; the AllPhotoLenses catalogue gives the same figures with six blades and 63 mm long. Kamerastore's 2026 listing of an Arsat gives seven blades and 272 g. The blade count differs between examples and is not entered above.
The year. No source read gives a launch year. The entry files the lens at 1990 from the 90 prefix of the serial numbers on the Soviet-engraved lenses Abramov photographs; the Kiev-181 it was planned for dates from 1993.
The camera. Abramov names the Kiev-181, which was never series-produced. Shapoval says the Arsat 1:1.4 was the standard lens of Kiev cameras without naming a model; the Kiev-19 and Kiev-19M were the Nikon-mount Kievs in production in the 1990s. English Wikipedia's Kiev (brand) article lists a 'Helios-123N 50mm f/2.0'; that aperture is wrong for this lens, and the line may confuse it with the Helios-81N.
Prices. The 2005 figures in Digital Camera Watch (about US$125 in Ukraine, about ¥20,000 in Japan) are retail prices of a lens still being made, not a launch list price. In November 2026 Kamerastore offered an Arsat 50mm f1.4 at €375, a dealer asking price, with its focusing grip replaced.
Fit on Nikon bodies. Digital Camera Watch warns that Soviet-era Arsenal lenses in this mount are only an approximation of Nikon AI and can jam on film Nikons with instant stop-down metering, such as the FA, F-301 and F4, while later Arsenal lenses approximate AI-S and avoid the problem. A reader on Radojuva's page found that some 'Н' lenses have lost the small limiting screw in the mount and jam if turned the wrong way when being removed.

How to tell them apart (expand)

Arsenal's f/1.4 standard lens for its Nikon-mount Kiev SLRs; not the Volna-4 1.4/50, which Abramov records only in trial batches, nor the f/1.2 Volna-8N
52mm filter thread, 270 g, focusing to 0.45 m; the focusing ring turns through almost 180° and the whole optical block moves (Shapoval)
Arsenal 'Н' bayonet, a near copy of Nikon F; Shapoval calls it AI-S type, while Digital Camera Watch says Soviet-era Arsenal lenses only approximate AI and later ones AI-S. It fits a Nikon without an adapter

MC Helios-123 (Cyrillic engraving):

Front ring engraved 'МС ГЕЛИОС-123 1.4/50' in Cyrillic, with 'МС' in orange and the Arsenal logo, a triangle inside a circle
'50 MM' in orange on the barrel; distance scale in metres only
One of the lenses on Abramov's page shows a six-sided aperture opening

ARSAT H 1:1.4 50mm:

Front ring engraved 'ARSAT H' and '1:1.4' in Latin capitals, with '50mm' and the Arsenal logo
Serial number and 'MADE IN UKRAINE' on the barrel
The 'H' is the Cyrillic letter Н, the Latin N: the same lens is written 'Arsat H' and 'Arsat N' by sellers, and Digital Camera Watch listed it as 'ARSAT-N 1.4/50'
The '1:1.4' is what separates it from the Arsat H 1:2 50mm, which is the Helios-81N under its later name

MC Helios-123 (Cyrillic engraving): Abramov describes the Helios-123 as an Arsenal lens planned as the standard lens of the Kiev-181, a simplified, cheaper Kiev-18 that was planned for 1993 and never series-produced, and records that a trial batch of 30 was made. His photographs show the Soviet-style engraving with the Arsenal logo and an aperture ring with a second, smaller row of f-numbers for the body's meter, as on Nikon AI lenses. Sellers and catalogues often write the name with an N ('Helios-123N'), as Radojuva does, though the front ring Abramov shows carries no letter after the number.
ARSAT H 1:1.4 50mm: Shapoval states that the MC Helios-123N 1.4/50 and the Arsat 50mm 1:1,4 H are one lens under two names, the Arsat being the later, after Arsenal began selling its production under the Arsat name after the break-up of the Soviet Union (possibly for other reasons too, he adds). His lens had a seven-bladed aperture, and he notes he had seen six-bladed ones elsewhere. Digital Camera Watch (Maruhashi Kaoru, 22 December 2005) listed the ARSAT-N 1.4/50 among Arsenal's lenses still in production, though not made continuously, at about US$125 in Ukraine and about ¥20,000 in Japan. No source read gives a first year for the Arsat name on this lens.

Specifications

Formula: Seven elements in six groups
Construction: 7 elements / 6 groups
Aperture range: f/1.4–f/16
Min. focus: 0.45 m
Weight: 270 g
Filter: 52 mm
Years manufactured: 1990
Country: Ukraine
Coating: Multicoated (MC)

What reviewers say

Arkadiy Shapoval (Radojuva), Arsat #9500419 (blog) — Soft from spherical aberration and with heavy chromatic aberration at f/1.4, sharp only from f/2.8 and very sharp at f/4–8; normal colour, almost no distortion and smooth bokeh without the Helios-81N's swirl. He liked it and valued its f/1.4 speed on a Nikon without an adapter, but thought image quality could have been better (perhaps his copy), and for an inexpensive Soviet 50mm for Nikon he pointed readers to the Helios-81N instead. via machine translation — corrections welcome

Optical Ratings

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

Chromatic aberration: Strong at f/1.4
Spherical aberration: Soft to f/2.8
Distortion: Very low

History

The Helios-123 is Arsenal’s 50mm f/1.4 for the Nikon-mount Kiev SLRs, the f/1.4 standard lens the Kyiv factory offered for them; the Volna-4 1.4/50 was made, by Abramov’s account, only in trial batches. It has seven elements in six groups, focuses to 0.45 m, takes 52mm filters and weighs 270 g. The mount is Arsenal’s ‘Н’ bayonet, a close copy of the Nikon F, so the lens fits a Nikon without an adapter; Shapoval calls it AI-S type, while Digital Camera Watch says Soviet-era Arsenal lenses only approximate Nikon AI.

It began as a small Soviet project. Abramov records it as the planned standard lens of the Kiev-181, a cheaper Kiev-18 with no provision for a motor drive that was planned for 1993 and never series-produced, and says that a trial batch of 30 lenses was made. The lenses he photographs carry the Soviet-style engraving ‘МС ГЕЛИОС-123 1.4/50’ and serial numbers beginning 90, which reads as 1990. After the Soviet Union broke up, Arsenal sold its production under the Arsat name, and the lens continued as the ARSAT H 1:1.4 50mm. Arkadiy Shapoval, reviewing #9500419 for Radojuva, states that it is the same lens under a later name. Digital Camera Watch still listed it as a current Arsenal product in December 2005, at about US$125 in Ukraine. The trial batch of 30 cannot be squared with an Arsat lens numbered in 1995 and still sold in 2005 unless the 30 covers only the Soviet-engraved lenses. No source read gives a total.

There are two versions, and the engraving tells them apart. The Soviet lens has the Cyrillic name and an orange ‘МС’ on the front ring. The Arsat has ‘ARSAT H’ and ‘1:1.4’ in Latin capitals, with the serial number and ‘MADE IN UKRAINE’ on the barrel. The ‘H’ is the Cyrillic Н, a Latin N, so sellers write both ‘Arsat H’ and ‘Arsat N’. A buyer should look for the ‘1:1.4’, because the Arsat H 1:2 50mm is a different lens, the Helios-81N. Blade counts vary: Shapoval’s lens has seven blades and he had seen six-bladed ones, and one of the lenses on Abramov’s page shows six.

On a modern Nikon the diaphragm stays open for viewing and closes at the moment of exposure, with the aperture set on the lens ring. Shapoval found the lens soft at f/1.4 from spherical aberration, with strong colour fringing that clears by f/2.8, and very sharp from f/4 to f/8, with low distortion and smooth bokeh without the swirl of the Helios-81N. Before fitting it to a film Nikon with instant stop-down metering, such as the FA, F-301 or F4, note Digital Camera Watch’s warning that Soviet-era Arsenal lenses can jam on those bodies and refuse to come off. Also check that the small limiting screw in the mount is present: a Radojuva reader found that ‘Н’ lenses without it can jam when turned the wrong way. Check that the iris closes cleanly and whether the focusing grip is original: the Arsat Kamerastore offered in 2026 had a replaced grip.

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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

More sample photos elsewhere

These photographers keep all rights to their work — enjoy it at the source.

Sample photo wanted — shot with a Helios-123 50mm f/1.4? We'd love to feature it (with credit).

Live listings

MC Helios 123 - 50mm f/1.4 | Rare Soviet Prototype Lens — €8,500.00 · eBay · likely helios-123

Listings updated 2026-11-09. Links go to the shop or marketplace that carries the item.