Samyang / Rokinon 21mm F1.4 ED AS UMC CS

Focal length: 21 mm
Aperture: f/1.4
Weight: 290 g
Filter diameter: 58 mm
Min. focus distance: 28 cm
Length: 67.9 mm

At a Glance

On Fujifilm X-Mount, the 21 mm equals 32 mm on full frame, a moderate wide-angle. It opens very wide at f/1.4 and focuses down to 28 cm. It weighs 290 g and is focused manually only. Street, reportage and everyday photography are natural uses.

Good for

Street
Reportage
Everyday

Worth knowing

No autofocus: focusing is manual only.

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

Technical Specifications

Min. focal length: 21 mm
Max. focal length: 21 mm
Max. aperture (min. zoom): f/1.4
Max. aperture (max. zoom): f/1.4
Min. aperture: f/22
Elements: 8
Groups: 7
Weight: 290 g (0.64 lb)
Filter diameter: 58 mm
Min. focus distance: 28 cm (11.02 in)
Length: 67.9 mm (2.67 in)
Diameter: 64.3 mm (2.53 in)

Manufacturer data: samyanglens.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 21mm F1.4 ED AS UMC CS fit?

The Samyang / Rokinon 21mm F1.4 ED AS UMC CS fits all Fujifilm X-Mount cameras. There its field of view equals 32 mm in full-frame terms (crop factor 1.5).

Fujifilm X-Mount cameras

APS-C:: Fujifilm X-T30 III,Fujifilm X-E5,Fujifilm X-M5,Fujifilm X-T50,Fujifilm X-S20,Fujifilm X-T5,Fujifilm X-H2,Fujifilm X-H2S,Fujifilm X-T30 II,Fujifilm X-E4,Fujifilm X-S10,Fujifilm X-T4,Fujifilm X-T200,Fujifilm X-Pro3,Fujifilm X-A7,Fujifilm X-T30,Fujifilm X-T3,Fujifilm X-T100,Fujifilm X-H1,Fujifilm X-A5,Fujifilm X-E3,Fujifilm X-T20,Fujifilm X-A10,Fujifilm X-A3,Fujifilm X-T2,Fujifilm X-E2S,Fujifilm X-Pro2,Fujifilm X-T1 IR,Fujifilm X-T10,Fujifilm X-A2,Fujifilm X-T1,Fujifilm X-E2,Fujifilm X-A1,Fujifilm X-M1,Fujifilm X-E1,Fujifilm X-Pro1