Rokinon 12mm T3.1 ED AS IF NCS UMC Cine DS Fisheye Lens
The Rokinon 12mm T3.1 ED AS IF NCS UMC is a 12mm f/3.1 lens designed for Canon EF, Nikon F, Sony E, Micro Four Thirds mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Rokinon 12mm T3.1 ED AS IF NCS UMC Cine DS Fisheye Lens
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Lens Overview — Rokinon 12mm T3.1 ED AS IF NCS UMC
Key Features — Rokinon 12mm T3.1 ED AS IF NCS UMC
12mm Fisheye Prime: Fixed 12mm focal length delivers a dramatic, immersive field of view suited to creative and cinematic ultra-wide shooting.
T3.1 Maximum Aperture: T-stop rating reflects actual light transmission rather than theoretical f-stop values, ensuring consistent exposure matching across a multi-lens cinema kit.
APS-C / Super 35 Coverage: Designed to cover APS-C and Super 35 sensors. Full-frame coverage is not confirmed for this fisheye design and has been corrected from the previous listing.
Cine DS Manual Focus: Smooth, geared manual focus ring with industry-standard spacing is optimized for follow-focus systems and precise focus pulls on set.
Declicked Aperture Ring: Smooth, stepless aperture control allows for clean, silent exposure adjustments during live takes — a key requirement in video production.
Four-Mount Availability: Available in Canon EF, Nikon F, Sony E, and Micro Four Thirds mounts, providing broad compatibility across popular cinema and mirrorless systems.
Lens Specifications — Rokinon 12mm T3.1 ED AS IF NCS UMC
| Spec | Detail |
|---|---|
| Use Cases | Documentary, Real Estate, Video / Cinematography, Creative Effects |
| Lens Type | Fisheye |
| Format | APS-C |
| Zoom/Prime | Prime |
| Focal Length | 12mm |
| Maximum Aperture | f/3.1 |
| Camera System | Cinema / Video |
| Lens Mount | Canon EF, Nikon F, Sony E, Micro Four Thirds |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Weight | 525g |
Description — Rokinon 12mm T3.1 ED AS IF NCS UMC
The Rokinon 12mm T3.1 Cine DS Fisheye is a prime fisheye lens categorized as an ultra-wide-angle optic, purpose-built for cinema and video production. With a fixed 12mm focal length and a maximum aperture of T3.1, it delivers a consistent, measured light transmission value that is essential for maintaining exposure uniformity across a multi-lens film shoot. The lens carries a full-frame image circle, ensuring broad sensor coverage, and is offered in Canon EF, Nikon F, Sony E, and Micro Four Thirds mount configurations to suit a variety of camera platforms.
Focus is entirely manual, with no autofocus system, which fits naturally into professional cinema setups that rely on dedicated focus pullers and follow focus systems. There is no image stabilization, so stable mounting or careful handheld technique is recommended. The lens weighs 525g, striking a practical balance for rig-based shooting.
One notable consideration is the absence of a filter thread, which means standard screw-on filtration is not an option and shooters will need to explore alternative filtration methods. For cinematographers and photographers seeking a dedicated fisheye prime with cinema-grade manual controls and wide mount compatibility, this lens offers a focused and well-defined feature set.
Pros — Rokinon 12mm T3.1 ED AS IF NCS UMC
- ✓T3.1 maximum aperture uses absolute T-stop measurement for consistent, reliable exposure matching across lenses
- ✓Full-frame coverage (lensFormat: Full Frame) provides broad sensor compatibility
- ✓Available in four mount options — Canon EF, Nikon F, Sony E, and Micro Four Thirds — for wide system compatibility
Cons — Rokinon 12mm T3.1 ED AS IF NCS UMC
- ✗No autofocus (autoFocus: false) — fully manual focus only, which may limit use in spontaneous or fast-moving shooting situations
- ✗No image stabilization (imageStabilization: None) — requires stable support or steady hands for clean footage
- ✗No filter thread (filterThreadSize: null) — standard screw-on filters cannot be attached, complicating filtration workflows
Videos — Rokinon 12mm T3.1 ED AS IF NCS UMC
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