Rokinon 12mm T3.1 ED AS IF NCS UMC Fisheye Lens
The Rokinon 12mm T3.1 ED AS IF is a 12mm f/3.1 lens designed for Sony E, Canon EF, Nikon F, Micro Four Thirds, Samsung NX, Sony A mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Rokinon 12mm T3.1 ED AS IF NCS UMC Fisheye Lens
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Lens Overview — Rokinon 12mm T3.1 ED AS IF
Key Features — Rokinon 12mm T3.1 ED AS IF
12mm Fisheye Prime: Fixed 12mm focal length delivers a full fisheye perspective with dramatic barrel distortion suited for creative, landscape, and interior work.
T3.1 Maximum Aperture: T-stop rating provides cinema-standard exposure consistency, making this lens practical for hybrid photo and video workflows.
APS-C Format Coverage: Designed specifically for APS-C sensors, delivering the intended fisheye field of view on crop-sensor camera bodies.
Manual Focus Design: Fully manual focus operation gives the shooter precise, hands-on control over focus placement without reliance on autofocus systems.
Multi-Coating (NCS UMC): Nano Crystal and Ultra Multi-Coating help suppress flare and ghosting when shooting in high-contrast or backlit conditions.
ED and AS Elements: Extra-low dispersion and aspherical elements work together to reduce chromatic aberration and improve edge sharpness across the frame.
Lens Specifications — Rokinon 12mm T3.1 ED AS IF
| Spec | Detail |
|---|---|
| Use Cases | Astrophotography, Travel, Video / Cinematography, Creative Effects |
| Lens Type | Fisheye |
| Format | APS-C |
| Zoom/Prime | Prime |
| Focal Length | 12mm |
| Maximum Aperture | f/3.1 |
| Camera System | Mirrorless |
| Lens Mount | Sony E, Canon EF, Nikon F, Micro Four Thirds, Samsung NX, Sony A |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Weight | 570g |
Description — Rokinon 12mm T3.1 ED AS IF
The Rokinon 12mm T3.1 Fisheye is a prime wide-angle lens designed for APS-C mirrorless camera systems, delivering a fixed 12mm focal length with a maximum aperture of T3.1. Operating exclusively in manual focus mode, this lens is built for shooters who want complete control over their image-making process. It weighs in at 570g, offering a solid feel that inspires confidence during use.
The fisheye lens type makes it naturally suited for dramatic wide-angle compositions, creative architectural work, and expansive landscape photography where a distinctive, distortion-driven perspective is desired. With no image stabilization onboard, it pairs best with tripod-mounted or stabilized shooting setups. The lens stands out for its exceptional mount compatibility, available across Sony E, Canon EF, Nikon F, Micro Four Thirds, Samsung NX, and Sony A systems, making it accessible to a wide variety of photographers and videographers.
The T3.1 aperture is calibrated using the cinema-standard T-stop system, ensuring consistent light transmission measurement.
Pros — Rokinon 12mm T3.1 ED AS IF
- ✓Fixed 12mm focal length delivers a dedicated fisheye perspective for creative wide-angle shooting
- ✓T3.1 aperture provides a reliable, cinema-calibrated exposure reference using T-stop measurements
- ✓Exceptionally broad mount compatibility across Sony E, Canon EF, Nikon F, Micro Four Thirds, Samsung NX, and Sony A systems
Cons — Rokinon 12mm T3.1 ED AS IF
- ✗No autofocus — manual focus only, which may limit usability for fast-moving subjects
- ✗No image stabilization, requiring steadier technique or support equipment in low light
- ✗APS-C format coverage limits compatibility with full-frame camera bodies
Videos — Rokinon 12mm T3.1 ED AS IF
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