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Sigma Cine 20mm T1.5 FF Lens

The Sigma 20mm T1.5 FF is a 20mm f/1.5 lens designed for PL Mount, Canon EF, Sony E, L-Mount mount cameras. Used copies start from $1,319.88 on GearFocus, with buyer protection on every purchase.

Sigma Cine 20mm T1.5 FF Lens

Sigma Cine 20mm T1.5 FF Lens

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Sigma Cine 20mm T1.5 FF High-Speed Prime 017 Canon EF

Condition: Excellent

Product Highlights

  • Wide 20mm focal length
  • Fast T1.5 aperture
  • Cine-style geared rings
  • Full-frame sensor coverage

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Used Sigma 20mm T1.5 FF Listings on GearFocus

Sigma Cine 20mm T1.5 FF High-Speed Prime 017 Canon EF
Sigma Cine 20mm T1.5 FF High-Speed Prime 017 Canon EF

Excellent

$1,319.88

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Lens Overview — Sigma 20mm T1.5 FF

The Sigma Cine 20mm T1.5 FF is a wide-angle prime lens built for professional cinema and video production. Designed around a full-frame image circle, it covers the sensors found in today's high-end cinema and hybrid cameras without any cropping concerns on full-frame platforms. The lens is available in four mount options — PL, Canon EF, Sony E, and L-Mount — giving cinematographers and rental houses genuine flexibility across a broad range of camera systems.

At T1.5, it delivers a fast, calibrated maximum aperture that is well-suited to low-light shooting scenarios and allows for meaningful depth-of-field control in wide-angle work. As a manual-focus design, it fits naturally into a professional cinema workflow where a focus puller operates the lens via a follow focus system, and the absence of autofocus removes any concern about unwanted hunting during a take. The 20mm focal length sits in wide-angle territory, making it a practical choice for establishing shots, tight interior locations, or any situation where a broad field of view is needed.

With full-frame coverage and a T-stop rating rather than an f-stop, this lens speaks directly to the needs of working cinematographers who require consistent, measurable exposure values across a matched lens set.

Key Features — Sigma 20mm T1.5 FF

20mm Full-Frame Prime: Covers full-frame sensors without vignetting, making it suitable for high-end cinema and hybrid cameras at their native sensor size.

T1.5 Maximum Aperture: A calibrated T-stop rating ensures consistent, measurable exposure values across a matched lens set — critical for multi-camera cinema productions.

Four Mount Options: Available in PL, Canon EF, Sony E, and L-Mount, giving cinematographers and rental houses broad compatibility across professional camera systems.

Manual Focus Design: Smooth focus ring built for operation via a follow focus system, with no autofocus mechanism to cause unwanted hunting during a take.

Wide-Angle Field of View: The 20mm focal length suits establishing shots, confined interior locations, and any scenario requiring a broad field of view.

Cinema Lens Matching: Part of Sigma's Cine FF lineup, designed to maintain consistent color rendering, exposure, and front diameter across the set for straightforward pairing with other focal lengths.

Lens Specifications — Sigma 20mm T1.5 FF

Sigma 20mm T1.5 FF full specifications
SpecDetail
Use CasesVideo / Cinematography, Studio, Creative Effects
Lens TypeCine
FormatFull Frame
Zoom/PrimePrime
Focal Length20mm
Maximum Aperturef/1.5
Camera SystemCinema / Video
Lens MountPL Mount, Canon EF, Sony E, L-Mount
AutofocusNo
Focus TypeManual Focus
Image StabilizationNone

Description — Sigma 20mm T1.5 FF

The Sigma Cine 20mm T1.5 FF is a prime wide-angle lens built for cinema and video production on full-frame camera systems. Its T1.5 maximum aperture delivers fast, precisely measured light transmission — a critical feature when matching exposure across a set of cinema primes on a professional production. The 20mm focal length falls in wide-angle territory, offering a broad field of view suited to interiors, environmental storytelling, and dynamic establishing shots.

As a manual focus lens, it integrates seamlessly into standard cinema rigging setups with follow focus systems and lens control motors. Mount compatibility spans PL Mount, Canon EF, Sony E, and L-Mount, allowing this single lens to serve across a diverse range of professional and hybrid cinema cameras. The full-frame image circle ensures edge-to-edge coverage on the largest sensor formats in current use, with no image circle limitations to worry about on full-frame platforms.

Pros — Sigma 20mm T1.5 FF

  • ✓Fast T1.5 maximum aperture provides strong light-gathering capability for cinema work
  • ✓Full-frame image circle covers the largest sensor formats without vignetting
  • ✓Available in four mounts — PL, Canon EF, Sony E, and L-Mount — for broad camera compatibility

Cons — Sigma 20mm T1.5 FF

  • ✗No autofocus capability makes this unsuitable for run-and-gun or solo shooter scenarios requiring AF
  • ✗No image stabilization listed, meaning handheld shooting relies entirely on stabilized rigs or gimbals
  • ✗Filter thread size is not specified, which may complicate filter system planning

Reviews — Sigma 20mm T1.5 FF

Videos — Sigma 20mm T1.5 FF

Sigma 20mm T1.5 Cine Prime - Lens Test  — LensProToGo

Resources & Downloads — Sigma 20mm T1.5 FF

Manuals & Guides

Frequently Asked Questions — Sigma 20mm T1.5 FF

What camera mounts is the Sigma Cine 20mm T1.5 FF available in?+
The lens is available in four mounts: PL Mount, Canon EF, Sony E, and L-Mount. This gives cinematographers the option to use it across a wide range of professional cinema and hybrid camera bodies.
Does this lens support autofocus?+
No. The Sigma Cine 20mm T1.5 FF is a manual-focus-only lens. This is intentional for a cinema context, where focus is typically controlled by a dedicated focus puller using a follow focus system.
Will this lens cover a full-frame sensor?+
Yes. The lens is specified as full-frame format, meaning it is designed to cover the image circle required by full-frame sensors without vignetting or cropping.
What does the T1.5 rating mean compared to an f-stop?+
T-stops are a measured transmission value that accounts for light lost through the optical elements, giving a more accurate exposure reading than calculated f-stops. A T1.5 rating is the actual light transmission of this lens, which is the standard used for cinema lens sets to ensure consistent exposure when cutting between lenses.
Does the lens have image stabilization?+
No. The specifications confirm that image stabilization is not present on this lens. Shooters who need stabilization will need to rely on a stabilized rig, gimbal, or in-body stabilization from the camera body.

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