Rokinon

Rokinon 12mm T3.1 Cine DS Fisheye Lens Canon EF

Name: Rokinon 12mm T3.1 Cine DS Fisheye Lens Canon EF
Brand: Rokinon
SKU: 12mm T3.1

Capture stunning ultra-wide fisheye footage with the Rokinon 12mm T3.1 Cine DS lens, built for smooth cinematic control on Canon EF mounts.

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Overview

The Rokinon 12mm T3.1 Full Frame Cine DS Fisheye Lens is purpose-built for digital cinematography on Canon EF mount cameras. Its optical formula incorporates three extra-low dispersion elements and two aspherical elements to control chromatic aberration and distortion artifacts, while Nano Coating and Ultra Multi Coating work together to minimize flare and ghosting. The inner focusing system keeps the front element stationary during focus pulls, a practical advantage when using matte boxes or clip-on filters. At T3.1, the lens provides a workable maximum aperture for a range of shooting conditions, from well-lit exteriors to moderately dim interiors.

Designed with cinema workflows in mind, the lens features industry-standard geared rings for both focus and aperture, enabling compatibility with wireless follow-focus systems and lens control motors. The de-clicked aperture ring allows smooth, stepless iris transitions during takes. Its 180-degree fisheye field of view makes it particularly suited for action sequences, immersive POV shots, and creative establishing shots in confined spaces. The bundle rounds out the package with a petal-shaped lens hood, a protective carrying case, a flex tripod, and front and rear lens caps.

Key Features

This Rokinon Cine DS 12mm T3.1 Ultra Wide Cine Fisheye Lens is compatible with Canon EOS EF Full Frame DSLR Cameras comes with a 1-year Rokinon Seller Warranty & features aperture range of T3.1-T22

Features Rokinon's Nano crystal coating, ultra multi-coating & a removable Petal Shaped Hood

Produces an Extreme Ultra-Wide 180 Degree Diagonal Fisheye View. Has De-Clicked (Uncoupled) and Geared Aperture and Focus Rings with Unified Cine DS Lens System focus gear and aperture gear positions

Extra low dispersion and aspherical lens elements reduce aberrations for sharp, color-accurate imaging

This bundle also contains : Soft & protective Lens Case, Spider Tripod, Cap Keeper

Specifications

Focal Length

12mm

Maximum Aperture

T3.1

Format Coverage

Full Frame

Lens Mount

Canon EF

Optical Design

3 Extra-Low Dispersion Elements, 2 Aspherical Elements

Coatings

Nano Coating + Ultra Multi Coating

Focusing

Manual, Inner Focusing System (IF)

Bundle Includes

Petal Shaped Lens Hood, Protective Lens Case, Spider Flex Tripod, Front & Rear Lens Caps, Cap Keeper

Pros & Cons

👍 Pros

Full-frame fisheye design produces dramatic 180-degree ultra-wide perspectives ideal for creative cinematography.
Cinema-standard geared focus and aperture rings allow precise, repeatable adjustments with follow-focus systems.
Nano Coating plus Ultra Multi Coating reduces flare and ghosting in challenging lighting conditions.
Inner focusing system prevents the front element from rotating, keeping polarizers and other front-mounted accessories stable.
Bundle includes lens hood, protective case, and tripod, adding value out of the box.

👎 Cons

Fully manual focus and aperture control requires more skill and slower setup compared to autofocus lenses.
Heavy barrel distortion is inherent to the fisheye design and requires post-processing correction if a rectilinear look is desired.
T3.1 maximum aperture is not especially fast for low-light cinematography compared to wider-aperture primes.
Lack of electronic contacts means no EXIF data is recorded to the camera body.

Frequently Asked Questions

Does the Rokinon 12mm T3.1 Cine DS Fisheye have a de-clicked aperture ring?

Yes, the Cine DS series features a de-clicked aperture ring with standard cinema gearing, allowing smooth and silent aperture adjustments during video recording.

What lens mount does this Rokinon 12mm fisheye use?

This version is designed for Canon EF mount cameras. It is not adaptable to other mounts without a third-party adapter.

Is this a full-frame or crop-sensor lens?

This is a full-frame fisheye lens. It can also be used on APS-C crop-sensor Canon bodies, though the fisheye distortion effect will be less pronounced.

Does this lens support autofocus?

No, this is a fully manual lens. Both focus and aperture are controlled manually via the lens barrel rings, which is standard for cine-style lenses.

What is the difference between T-stop and F-stop on this lens?

T-stop measures actual light transmission through the lens, accounting for light lost in the glass elements. A T3.1 rating gives cinematographers a more accurate exposure reading than an equivalent f-stop number.