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ARRI Signature Prime 40mm T1.8 Cinema Lens

The ARRI 40mm T1.8 is a 40mm f/1.8 cinema lens designed for LPL, PL Mount mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

ARRI Signature Prime 40mm T1.8 Cinema Lens

ARRI Signature Prime 40mm T1.8 Cinema Lens

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Lens Overview — ARRI 40mm T1.8

The ARRI Signature Prime 40mm is a manual-focus cinema lens built around a PL Mount interface and designed to cover a Full Frame image format. Operating in the standard focal length range, this 40mm prime offers a maximum aperture of T1.8, making it well-suited for low-light cinematography and achieving shallow depth of field. As a prime lens, it delivers a fixed focal length with no zoom capability, which is the standard choice on professional cinema sets where optical consistency and image quality take priority.

The lens is classified under ARRI's Cinema / Video camera system ecosystem, confirming its intent as a dedicated motion picture tool rather than a stills hybrid. Weighing in at 1.9 kg, it carries a solid but manageable heft for a full-frame cinema prime. Focus is entirely manual, which aligns with professional cinema workflows where a dedicated focus puller operates the lens independently from the camera operator.

With no image stabilization, this lens relies on the production's rigging and support systems for steady imagery. The PL Mount is an industry-standard cinema mount, ensuring broad compatibility across professional cinema camera bodies that accept PL glass.

Key Features — ARRI 40mm T1.8

LPL / PL Mount Interface: Ships with PL mount; the ARRI Signature Prime series also supports LPL mount, ensuring compatibility across professional cinema camera platforms.

T1.8 Maximum Aperture: Wide maximum aperture allows for shallow depth of field and effective performance in low-light cinematography conditions.

Large-Format Coverage: Image circle designed for ARRI Large Format sensors (ALEXA LF, ALEXA Mini LF), covering sensors larger than traditional Super 35.

40mm Fixed Focal Length: Standard focal length offers a natural field of view well suited to dialogue scenes, close-ups, and general narrative work.

Manual Focus Design: Smooth, precise focus ring is built for repeatable focus pulls by a dedicated focus puller on professional cinema sets.

Consistent Front Diameter: Signature Primes share a uniform 95mm front diameter across the set, allowing accessories and matte boxes to remain unchanged between lenses.

Lens Specifications — ARRI 40mm T1.8

ARRI 40mm T1.8 full specifications
SpecDetail
Use CasesVideo / Cinematography
Lens TypeCine
FormatFull Frame
Zoom/PrimePrime
Focal Length40mm
Maximum Aperturef/1.8
Camera SystemCinema / Video
Lens MountLPL, PL Mount
AutofocusNo
Focus TypeManual
Image StabilizationNone
Weight1.9kg

Description — ARRI 40mm T1.8

The ARRI Signature Prime 40mm T1.8 is a dedicated cinema prime lens built for professional motion picture production. It features a PL Mount, the industry-standard cinema lens interface, and is designed to cover a Full Frame image format. With a maximum aperture of T1.8, this lens performs in demanding lighting conditions and allows cinematographers to work with a shallow depth of field when needed.

Focus is manual only, in keeping with professional cinema workflows where a focus puller handles lens operation. The lens falls within the standard focal length range at a fixed 40mm, making it a versatile option for narrative filmmaking, documentary work, and commercial production. Weighing 1.9 kg, it is a substantial but workable lens for handheld and rigged setups alike.

Image stabilization is not included, so on-set support systems are essential. This lens is purpose-built for the Cinema / Video camera system ecosystem, reinforcing its role as a professional production tool.

Pros — ARRI 40mm T1.8

  • ✓Wide maximum aperture of T1.8 supports low-light shooting and shallow depth of field
  • ✓Full Frame lens format provides coverage for large-format sensor cameras
  • ✓PL Mount is a widely adopted industry-standard cinema mount

Cons — ARRI 40mm T1.8

  • ✗No image stabilization — production must rely on external support rigs
  • ✗No autofocus capability, which limits solo-operator run-and-gun workflows
  • ✗No filter thread size specified, which may complicate on-set filtration planning

Videos — ARRI 40mm T1.8

The Most Popular Cinema Lenses: Zeiss, Canon, Cooke, Arri, Angénieux — In Depth Cine

Resources & Downloads — ARRI 40mm T1.8

Manuals & Guides

Frequently Asked Questions — ARRI 40mm T1.8

What camera mount does the ARRI Signature Prime 40mm T1.8 use?+
This lens uses a PL Mount, which is the standard cinema lens mount found on a wide range of professional cinema cameras. PL Mount is the only mount listed in the specifications for this lens.
Does this lens support autofocus?+
No. The ARRI Signature Prime 40mm T1.8 is a manual focus lens only. Autofocus is not available, which is consistent with professional cinema lens design where focus is controlled by a dedicated focus puller.
What sensor size does the 40mm T1.8 cover?+
According to the specifications, this lens has a Full Frame lens format, meaning it is designed to cover full-frame sensors. It is categorized under the Cinema / Video camera system.
What is the maximum aperture of this lens?+
The maximum aperture is T1.8, measured in the T-stop scale used for cinema lenses. This wide aperture supports shooting in lower light conditions and achieving significant background separation.
Does the ARRI Signature Prime 40mm T1.8 have image stabilization?+
No. The specifications explicitly list image stabilization as None. Stable footage will depend on the camera support system and rigging used on set.
How much does this lens weigh?+
The lens weighs 1.9 kg according to the specifications. This is a standard weight range for a professional full-frame cinema prime lens.

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