Sigma 20mm T2.5 Cine Lens
The Sigma 20mm T2.5 is a 20mm f/2.5 cinema lens designed for PL Mount mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma 20mm T2.5 Cine Lens
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Lens Overview — Sigma 20mm T2.5
Key Features — Sigma 20mm T2.5
20mm Full-Frame Prime: Covers full-frame sensors at a 20mm focal length, making it well-suited for wide establishing shots, environmental storytelling, and immersive perspectives.
T2.5 Maximum Aperture: Offers solid light-gathering capability for a wide-angle cine prime, useful in lower-light production environments without sacrificing a workable depth of field.
PL Mount: Industry-standard cinema mount compatible with professional camera systems from ARRI, RED, and other PL-compatible platforms.
Manual Focus Design: Smooth, cinema-style manual focus ring built for repeatable focus pulls when operated with a dedicated follow-focus system.
95mm Front Filter Thread: Large front diameter accommodates standard matte boxes and a wide range of front-mounted filtration solutions commonly used on professional sets.
Part of Sigma Cine Line: Shares consistent housing dimensions, gear positions, and front diameter with other Sigma FF High Speed Prime lenses, simplifying lens swaps mid-production.
Lens Specifications — Sigma 20mm T2.5
| Spec | Detail |
|---|---|
| Use Cases | Studio, Video / Cinematography |
| Lens Type | Cine |
| Format | Full Frame |
| Zoom/Prime | Prime |
| Focal Length | 20mm |
| Maximum Aperture | f/2.5 |
| Camera System | Cinema / Video |
| Lens Mount | PL Mount |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Filter Thread | 95mm |
Description — Sigma 20mm T2.5
The Sigma 20mm T2.5 Cine Lens is a prime wide-angle cinema lens built for full-frame sensor coverage. Featuring a PL Mount, it slots directly into professional cinema camera systems without the need for adapters. The T2.5 maximum aperture delivers reliable light transmission performance, expressed in the calibrated T-stop measurement standard used across the cinema industry.
Designed for fully manual focus operation, it fits naturally into workflows where focus pullers use dedicated follow-focus rigs — the industry norm for scripted productions. The 95mm front filter thread provides broad compatibility with professional matte boxes and filtration accessories. At 1300g, the lens has a substantial build appropriate for a full-frame cine prime.
With no image stabilization, it is best paired with stabilized rigs or camera support systems. The 20mm focal length sits in wide-angle territory, making it a practical choice for wide establishing shots and immersive environmental cinematography on productions using PL-mount cinema cameras.
Pros — Sigma 20mm T2.5
- ✓Full-frame coverage ensures compatibility with large-format cinema cameras (lensFormat: Full Frame)
- ✓PL Mount connection integrates with professional cinema camera ecosystems (mount.lens: PL Mount)
- ✓T2.5 maximum aperture provides solid light-gathering capability for a wide-angle cine prime (maximumAperture: 2.5)
Cons — Sigma 20mm T2.5
- ✗At 1300g, the lens adds considerable weight to a camera rig (weight: 1300g)
- ✗No image stabilization included, requiring external stabilization solutions (imageStabilization: None)
- ✗Single PL Mount option limits compatibility to PL-equipped cinema cameras only (mount.lens: PL Mount)
Reviews — Sigma 20mm T2.5
Videos — Sigma 20mm T2.5
Sigma 20mm T1.5 Cine Prime - Lens Test — LensProToGo