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Samyang / Rokinon 50mm F1.2 ED AS UMC CS

Micro Four Thirds (MFT/M43)

Samyang / Rokinon 50mm F1.2 ED AS UMC CS

Focal length
50 mm
Aperture
f/1.2
Weight
375 g
Filter diameter
62 mm
Min. focus distance
50 cm
Length
73 mm
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At a Glance

On Micro Four Thirds, the 50 mm focal length becomes a full-frame equivalent of 100 mm, so the lens acts as a short telephoto prime. At f/1.2 the aperture is very wide, allowing a shallow depth of field and short shutter times. Focusing is manual and internal, with a closest focus of 50 cm. It is meant for portraits.

Good for

  • Portraits

Worth knowing

  • No autofocus: focusing is manual only.

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

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Min. focal length
50 mm
Max. focal length
50 mm
Max. aperture (min. zoom)
f/1.2
Max. aperture (max. zoom)
f/1.2
Min. aperture
f/16
Elements
9
Groups
7
Weight
375 g (0.83 lb)
Filter diameter
62 mm
Min. focus distance
50 cm (19.69 in)
Length
73 mm (2.87 in)
Diameter
67.5 mm (2.66 in)

Manufacturer data: rokinon.com

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Samyang / Rokinon 50mm F1.2 ED AS UMC CS fit?

The Samyang / Rokinon 50mm F1.2 ED AS UMC CS fits all Micro Four Thirds cameras. There its field of view equals 100 mm in full-frame terms (crop factor 2).

Micro Four Thirds cameras

Micro Four Thirds:
OM System PEN,OM System OM-3,OM System OM-5 Mark II,Panasonic Lumix G97 (G99M2),Panasonic Lumix GH7,OM System OM-1 Mark II,Panasonic Lumix G9 II,Panasonic Lumix G100D,OM System OM-5,OM System OM-1,Panasonic Lumix GH6,Panasonic Lumix GH5 II,Olympus PEN E-P7,Olympus OM-D E-M10 Mark IV,Olympus OM-D E-M1 Mark III,Panasonic Lumix G100 (G110),Panasonic Lumix BGH1,Olympus PEN E-PL10,Olympus OM-D E-M5 Mark III,Panasonic Lumix G95 (G90, G91),Olympus OM-D E-M1X,Panasonic Lumix GX9,Panasonic Lumix GF10 (GF90, GX880),Olympus PEN E-PL9,Panasonic Lumix GH5S,Blackmagic Pocket Cinema Camera 4K,Panasonic Lumix G9,Olympus OM-D E-M10 Mark III (Mark III S),Panasonic Lumix GF9 (GX850, GX800),Panasonic Lumix GH5,Olympus PEN E-PL8,Olympus OM-D E-M1 Mark II,Panasonic Lumix G85 (G80, G81),Panasonic Lumix GX85 (GX80, GX7 Mark II),Olympus PEN-F,Olympus OM-D E-M10 Mark II,Panasonic Lumix GX8,Panasonic Lumix G7,Panasonic Lumix GF7,Olympus Air A01,Olympus OM-D E-M5 Mark II,Panasonic Lumix GM5,Olympus PEN E-PL7,Panasonic Lumix GH4,Olympus OM-D E-M10,Panasonic Lumix GM1,Olympus OM-D E-M1,Panasonic Lumix GX7,Olympus PEN E-PL6,Olympus PEN E-P5,Panasonic Lumix G6,Panasonic Lumix GF6,Blackmagic Pocket Cinema Camera,Olympus PEN E-PM2,Olympus PEN E-PL5,Panasonic Lumix GH3,Panasonic Lumix G5,Panasonic Lumix GF5,Olympus OM-D E-M5,Blackmagic Cinema Camera (MFT),Panasonic Lumix GX1,Olympus PEN E-PM1,Olympus PEN E-PL3,Olympus PEN E-P3,Panasonic Lumix GF3,Panasonic Lumix G3,Olympus PEN E-PL2,Panasonic Lumix GF2,Panasonic Lumix GH2,Panasonic Lumix G2,Panasonic Lumix G10,Olympus PEN E-PL1 (E-PL1s),Olympus PEN E-P2,Panasonic Lumix GF1,Olympus PEN E-P1,Panasonic Lumix GH1,Panasonic Lumix G1

Samyang / Rokinon 50mm F1.2 ED AS UMC CS compared

Key specs side by side with the most similar Micro Four Thirds lenses.

LensSamyang / Rokinon 50mm F1.2 ED AS UMC CSTTArtisan 50mm f/1.27artisans 50mm F1.2Pergear 50mm F1.2
Focal length50 mm50 mm50 mm50 mm
Max. aperturef/1.2f/1.2f/1.2f/1.2
Weight375 g336 g–360 g
Filter diameter62 mm52 mm55 mm–
Min. focus distance50 cm50 cm70 cm70 cm
Length73 mm60 mm––
Autofocusnononono
Image stabilizationnononono
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Samyang / Rokinon 50mm F1.2 ED AS UMC CS: FAQ

Does the Samyang / Rokinon 50mm F1.2 ED AS UMC CS have autofocus?

No, the Samyang / Rokinon 50mm F1.2 ED AS UMC CS has no autofocus; you focus it manually.

Does the Samyang / Rokinon 50mm F1.2 ED AS UMC CS have image stabilization?

No, the Samyang / Rokinon 50mm F1.2 ED AS UMC CS has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Samyang / Rokinon 50mm F1.2 ED AS UMC CS weigh?

The Samyang / Rokinon 50mm F1.2 ED AS UMC CS weighs 375 g. It is 73 mm long with a diameter of 67.5 mm.

What filter size does the Samyang / Rokinon 50mm F1.2 ED AS UMC CS use?

The Samyang / Rokinon 50mm F1.2 ED AS UMC CS takes 62 mm screw-in filters.

How close can the Samyang / Rokinon 50mm F1.2 ED AS UMC CS focus?

The minimum focus distance of the Samyang / Rokinon 50mm F1.2 ED AS UMC CS is 50 cm, measured from the sensor plane.

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