ARRI Signature Prime 12mm T1.8 Cinema Lens
The ARRI 12mm T1.8 is a 12mm f/1.8 cinema lens designed for Other mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

ARRI Signature Prime 12mm T1.8 Cinema Lens
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Lens Overview — ARRI 12mm T1.8
Key Features — ARRI 12mm T1.8
12mm Wide-Angle Prime: A fixed 12mm focal length designed for expansive wide-angle coverage, suited to establishing shots and immersive environmental storytelling.
T1.8 Maximum Aperture: A fast T1.8 stop provides strong light-gathering capability, giving cinematographers control over exposure and depth of field in low-light conditions.
Large-Format Coverage: Designed to cover large-format cinema sensors, making it compatible with cameras like the ARRI ALEXA LF and ALEXA 65.
LPL Mount: Uses ARRI's LPL (Large Positive Lock) mount, the native mount for the Signature Prime series and ALEXA LF/Mini LF systems.
Manual Focus Design: Built for professional cinema workflows where dedicated focus pullers operate the lens via follow-focus systems for precise, repeatable pulls.
Signature Optical Rendering: Part of ARRI's Signature Prime family, the lens is tuned to deliver a characteristic organic look with natural bokeh and smooth tonal transitions.
Lens Specifications — ARRI 12mm T1.8
| Spec | Detail |
|---|---|
| Use Cases | Video / Cinematography |
| Lens Type | Cine |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 12mm |
| Maximum Aperture | f/1.8 |
| Camera System | Cinema / Video |
| Lens Mount | Other |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Weight | 2.6kg |
Description — ARRI 12mm T1.8
The ARRI Signature Prime 12mm is a professional wide-angle cinema prime designed for the most demanding production environments. Built around the PL Mount, it integrates seamlessly into professional cinema camera setups and supports the full-frame and large-format sensor configurations increasingly common in modern production. The lens delivers a maximum aperture of T1.8, providing impressive light transmission that gives directors of photography real flexibility in low-light conditions and meaningful depth-of-field control.
As a manual focus prime with no image stabilization, it is engineered for use with follow-focus systems and skilled camera operators rather than automated or handheld workflows. The 12mm focal length places it firmly in wide-angle territory, making it a strong choice for expansive visual storytelling, architectural interiors, and immersive scene-setting work. With a weight of 2.6kg, this lens is built for a rigged cinema package.
The full-frame coverage ensures no compromise when paired with large-format cinema cameras, making it a capable and purposeful tool for high-end film and television production.
Pros — ARRI 12mm T1.8
- ✓Wide maximum aperture of T1.8 allows strong light collection in low-light production environments
- ✓Full-frame lens format provides coverage for large-format cinema sensors
- ✓PL Mount ensures compatibility across a wide range of professional cinema and video cameras
Cons — ARRI 12mm T1.8
- ✗No autofocus capability, requiring dedicated focus operating on set
- ✗At 2.6kg, the lens is relatively heavy and demands a properly rigged camera setup
- ✗No image stabilization, which is expected for a cinema prime but worth noting for handheld applications
Reviews — ARRI 12mm T1.8
Videos — ARRI 12mm T1.8
ARRI Signature Primes Tech Talk: 4 things you have to know — ARRIChannel