Rokinon 21mm f/1.4 UMC CS Lens
The Rokinon 21mm f/1.4 is a 21mm f/1.4 lens designed for Sony E, Fujifilm X, Micro Four Thirds, Canon EF-M mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Rokinon 21mm f/1.4 UMC CS Lens
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Lens Overview — Rokinon 21mm f/1.4
Key Features — Rokinon 21mm f/1.4
21mm f/1.4 Prime: A fast wide-angle prime that gathers significant light for low-light shooting and subject separation on APS-C sensors.
APS-C Optimized Design: Optical formula designed specifically for APS-C image circles, keeping the lens compact without engineering for unnecessary full-frame coverage.
Four-Mount Compatibility: Available in Sony E, Fujifilm X, Micro Four Thirds, and Canon EF-M mounts, covering the majority of mirrorless APS-C camera systems.
Manual Focus Only: Dedicated manual focus ring gives photographers direct, tactile control over focus, suited to deliberate shooting styles.
UMC Lens Coatings: Ultra Multi-Coating reduces flare and ghosting, helping maintain contrast and color accuracy when shooting toward light sources.
Lightweight at 275g: Compact enough to pair with small mirrorless bodies without adding meaningful bulk to a travel or street photography kit.
Lens Specifications — Rokinon 21mm f/1.4
| Spec | Detail |
|---|---|
| Use Cases | Landscape, Street, Travel, Night |
| Lens Type | Prime |
| Format | APS-C |
| Zoom/Prime | Prime |
| Focal Length | 21mm |
| Maximum Aperture | f/1.4 |
| Camera System | Mirrorless |
| Lens Mount | Sony E, Fujifilm X, Micro Four Thirds, Canon EF-M |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 58mm |
Description — Rokinon 21mm f/1.4
The Rokinon 21mm f/1.4 UMC CS is a prime lens purpose-built for APS-C mirrorless camera systems, available in Sony E, Fujifilm X, Micro Four Thirds, and Canon EF-M mounts. Its f/1.4 maximum aperture makes it one of the faster options in the wide-angle prime category, well-suited to low-light environments and creative shooting where a shallower depth of field is desirable. The 21mm focal length sits in the wide-angle range, lending itself naturally to street photography, travel, and landscape work.
At just 275g, the lens is compact and lightweight, complementing the portability that makes mirrorless systems attractive in the first place. Focus is manual only, so users should be comfortable with manual focus workflows. The 58mm filter thread allows easy use of standard photographic filters.
With no image stabilization, steady shooting technique becomes important, particularly when shooting at wider apertures in lower light.
Pros — Rokinon 21mm f/1.4
- ✓Fast f/1.4 maximum aperture provides strong light-gathering capability for low-light shooting
- ✓Lightweight at just 275g, keeping overall mirrorless kit weight manageable
- ✓Wide mount compatibility covers Sony E, Fujifilm X, Micro Four Thirds, and Canon EF-M systems
Cons — Rokinon 21mm f/1.4
- ✗Manual focus only — no autofocus, which limits usability in fast-moving or action scenarios
- ✗No image stabilization, requiring steadier technique especially in low light
- ✗APS-C-only format means the lens cannot be used on full-frame mirrorless bodies
Videos — Rokinon 21mm f/1.4
Samyang (Rokinon) 21mm f/1.4 | Image Quality Examination — Dustin Abbott