Lomo OKC Standard Speed 18mm T3

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The slowest of the wides at about T3. Soviet cine primes ("OKC" is the Cyrillic spelling of OKS). Limited coatings give a soft, lower-contrast image with colourful flares; sample variation is large and sets are usually assembled from mixed production years (sources date them anywhere from the 1950s to the 1980s). They cover Super 35; front diameter depends on the housing (80, 85 and 95mm are all found), so it is omitted.

Key specs

Focal length

18 mm

Max aperture

T3

Mount

OCT-19 (Lomo / Konvas), PL

Image circle

Super 35

Close focus

0.51 m

Weight

680 g

Field of view by sensor

Full frame

90° horizontal · frames like 18 mm on full frame

Super 35

69.3° horizontal · frames like 26 mm on full frame

Micro Four Thirds

51.3° horizontal · frames like 37.5 mm on full frame

What it goes on

Originals are in the Soviet OCT-19 (or older OCT-18) mount; OCT-19 converts to PL with a simple adapter or a hard PL conversion, and adapts directly to mirrorless mounts via RafCamera-style adapters. Full rehousings are offered by GL Optics and others, which also standardises the otherwise mismatched fronts.

• PL camerasNativeALEXA 265, ALEXA 35, PYXIS 12K, PYXIS 6K +15 more
• Sony E camerasWith adapterRonin 4D-6K, Ronin 4D-8K, Alpha 1 II, Alpha 7 IV +13 more

  Wooden Camera E to PL · Vocas PL to E · Metabones PL-E. Solid and common. Support the lens — the E-mount is not built to carry a heavy cine zoom on its own.

• Canon RF camerasWith adapterEOS C400, EOS C50, EOS C70, EOS C80 +10 more

  Wooden Camera RF to PL · Canon PL-RF (C400 / C80) · Kipon PL-RF. Common; use lens support with heavy glass.

• L-Mount camerasWith adapterCinema Camera 6K, PYXIS 12K, PYXIS 6K, Ronin 4D-6K +6 more

  Leitz L-PL · Wooden Camera L to PL · Sigma MC-31. Common; use lens support with heavy glass.

• Micro Four Thirds camerasWith adapterMicro Studio Camera 4K G2, Pocket Cinema Camera 4K, Lumix BGH1, Lumix GH6 +1 more

  Wooden Camera MFT to PL · MTF PL to MFT. Works, with a 2x crop on Super 35 glass relative to full frame.

• LPL camerasWith adapterALEXA 265, ALEXA 35, ALEXA Mini LF, URSA Cine 17K 65

  ARRI PL-to-LPL Adapter. ARRI's own adapter, passes LDS / Cooke /i lens data.

• Nikon Z camerasWith adapterKOMODO-X 6K S35, V-RAPTOR [X] 8K VV, V-RAPTOR XE

  Wooden Camera Z to PL · Kipon PL-NIK Z. Common; use lens support with heavy glass.

• Canon EF camerasWith adapter· by flange mathsALEXA 265, ALEXA 35, ALEXA Mini LF, Pocket Cinema Camera 6K G2 +14 more

  17 mm of room for a plain ring. Check rear-element and mirror clearance before buying.

• Leica M camerasWith adapter· by flange mathsALEXA 265, ALEXA 35, ALEXA Mini LF, Ronin 4D-6K +1 more

  33.2 mm of room for a plain ring. Check rear-element and mirror clearance before buying.

• B4 (2/3") camerasWith adapter· by flange mathsURSA Broadcast G2, URSA Mini Pro 4.6K G2, AJ-CX4000

  13 mm of room for a plain ring. Check rear-element and mirror clearance before buying.

• Nikon F camerasWith adapter· by flange mathsURSA Mini Pro 12K, URSA Mini Pro 12K OLPF, URSA Mini Pro 4.6K G2

  14.5 mm of room for a plain ring. Check rear-element and mirror clearance before buying.

See every camera this lens fits →

Sources: keslowcamera.com, rule.com, rgbrental.com