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ARRI Ultra Prime 20mm Cinema Lens T1.9 (PL Mount, Measurement in Feet)

The ARRI 20mm T1.9 is a 20mm f/1.9 cinema lens designed for PL Mount mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

ARRI Ultra Prime 20mm Cinema Lens T1.9 (PL Mount, Measurement in Feet)

ARRI Ultra Prime 20mm Cinema Lens T1.9 (PL Mount, Measurement in Feet)

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Lens Overview — ARRI 20mm T1.9

The ARRI Ultra Prime 20mm is a wide-angle cinema prime lens built for professional film and digital cinema production. Designed around the PL Mount standard, it is engineered to cover the Super 35 format, making it compatible with a broad range of cinema and video cameras operating in that format. At its core, the lens opens to a maximum aperture of T1.9, giving cinematographers meaningful light-gathering capability in demanding lighting conditions and allowing for controlled depth-of-field choices on set.

Focus is entirely manual, which is standard practice in professional cinema workflows where a dedicated focus puller manages critical focus operations. The lens weighs 1,180g, placing it in a manageable range for handheld rigs, gimbals, and traditional studio setups alike. A 95mm filter thread accommodates industry-common matte boxes and filter systems without the need for step rings.

As a prime lens with a fixed 20mm focal length, it sits within the wide-angle category, suited to establishing shots, environmental storytelling, and interiors. Image stabilization is not included, consistent with the manual, tripod-and-rig-based workflows this lens is built for. The measurement scale on this particular unit is calibrated in feet, an important detail for focus pullers accustomed to working in imperial units.

Key Features — ARRI 20mm T1.9

20mm Fixed Focal Length: A dedicated wide-angle prime with no zoom mechanics, delivering consistent optical performance suited to establishing shots, interiors, and environmental storytelling.

T1.9 Maximum Aperture: Fast light transmission supports shooting in low-light conditions and gives cinematographers control over depth of field.

PL Mount: Industry-standard cinema lens mount compatible with professional camera systems from ARRI, RED, Sony, and others.

Super 35 Coverage: Designed to cover the Super 35 format, aligning with the dominant sensor size used across professional digital cinema cameras.

Manual Focus Design: Smooth, precise manual focus ring built for repeatable focus pulls by a dedicated focus puller on set.

Feet Focus Scale: Focus markings calibrated in feet, an important practical detail for focus pullers working in imperial units.

Lens Specifications — ARRI 20mm T1.9

ARRI 20mm T1.9 full specifications
SpecDetail
Use CasesVideo / Cinematography
Lens TypeCine
FormatSuper 35
Zoom/PrimePrime
Focal Length20mm
Maximum Aperturef/1.9
Camera SystemCinema / Video
Lens MountPL Mount
AutofocusNo
Focus TypeManual
Image StabilizationNone
Filter Thread95mm

Description — ARRI 20mm T1.9

The ARRI Ultra Prime 20mm T1.9 is a professional cinema prime lens built for demanding production environments. It is mounted with a PL Mount and designed to cover the Super 35 format, matching the sensor size used in a wide range of professional cinema cameras. The lens is classified as a wide-angle prime with a fixed 20mm focal length, making it well suited to expansive establishing shots, interior scenes, and immersive wide compositions.

Its maximum aperture of T1.9 provides solid light transmission, giving cinematographers flexibility in lower-light situations and the ability to work with shallower depth of field when the scene calls for it. Focus operation is entirely manual, in keeping with professional cinema practice. The lens weighs 1,180g, offering a balance between build quality and physical manageability on set.

The 95mm filter thread integrates cleanly with standard matte boxes and filter systems common across professional cinema rigs. The focus scale on this unit is marked in feet, a key specification for focus pullers to confirm before production. Image stabilization is listed as None, consistent with the tripod- and rig-based setups typical in cinema production.

Pros — ARRI 20mm T1.9

  • ✓Fast T1.9 maximum aperture provides strong light-gathering capability for a wide-angle prime
  • ✓PL Mount offers broad compatibility across professional cinema and video camera systems
  • ✓Super 35 format coverage aligns with the dominant sensor size in professional digital cinema

Cons — ARRI 20mm T1.9

  • ✗No image stabilization, requiring stable rigging or support systems for smooth footage
  • ✗Manual focus only means no autofocus capability for run-and-gun or solo operator scenarios
  • ✗At 1,180g, the lens adds meaningful weight to camera rigs, particularly relevant for extended handheld shoots

Videos — ARRI 20mm T1.9

Are the Samyang Cine V-AF Lenses really for filmmakers? [Honest Review] — Brandon Li

Resources & Downloads — ARRI 20mm T1.9

Manuals & Guides

Frequently Asked Questions — ARRI 20mm T1.9

What camera mount does the ARRI Ultra Prime 20mm use?+
This lens uses the PL Mount, a standard widely used across professional cinema cameras designed for the Cinema / Video camera system category. It is not compatible with DSLR or mirrorless mounts without an adapter.
What sensor format does this lens cover?+
The ARRI Ultra Prime 20mm is designed to cover the Super 35 format. Shooters should verify that their camera's active sensor area does not exceed Super 35 coverage to avoid vignetting.
What is the maximum aperture of this lens?+
The lens has a maximum aperture of T1.9. This is a T-stop rating, which measures actual light transmission rather than the theoretical f-stop, making it a more precise figure for exposure calculations in cinema production.
Does this lens have autofocus or image stabilization?+
No. The ARRI Ultra Prime 20mm is a fully manual focus lens with no autofocus and no image stabilization. This is standard for professional cinema lenses, where manual focus pulled by a dedicated operator is the norm.
What filter size does this lens accept?+
The lens has a 95mm filter thread, which is a common front diameter in the Ultra Prime series for standard focal lengths. This makes it straightforward to attach matte boxes and screw-in filters without step rings.
Is the focus scale on this lens marked in feet or meters?+
This specific version of the ARRI Ultra Prime 20mm has its focus markings calibrated in feet, as noted in the product title. Crews working in metric units should confirm this matches their workflow before purchasing.

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