Arri Alexa LF Camera Body

Based on a large-format 4K version of the ALEXA sensor, the system comprises the ALEXA LF camera, ARRI Signature Prime lenses, LPL lens mount and PL-to-LPL adapter. These system elements have been designed to take full advantage of the enlarged sensor, while also offering compatibility with existing lenses, accessories and workflows.

FC # MFR #K1.0014861

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Arri Alexa LF Camera Body

Overview

Details

Featuring a sensor slightly larger than full frame, ALEXA LF records native 4K with ARRI’s best overall image quality. This allows filmmakers to explore an immersive large-format aesthetic while retaining the sensor’s natural colorimetry, pleasing skin tones and stunning capability for HDR and WCG workflows. Versatile recording formats, including efficient ProRes and uncompressed, unencrypted ARRIRAW up to 150 fps, encompass all on-set workflow requirements.

ALEXA LF has the largest sensor of any full-frame cinema camera on the market. Maintaining the ALEXA family’s optimal pixel size for highest overall image quality results in a 4448 x 3096 picture, which can be recorded in full using the LF Open Gate mode. An LF 16:9 mode maximizes lens options while meeting 4K deliverable standards, and an LF 2.39:1 mode combines a cinematic widescreen image with high frame rates up to 150 fps for sensuous slow motion. All sensor modes offer true 800 ASA sensitivity as well as reduced noise, providing the perfect canvas for modern, subtle lighting techniques.

The new native resolution ultimately makes ALEXA the Netflix-approved production tool. The new cell is based on the same pixel size as Alexa Mini and AMIRA cells. This way, the color and quality of the Arri Alexa cameras are also visible in the new camera.

A crucial element of this new system is the LPL lens mount, optimized for large-format sensors. A wider diameter and shorter flange focal depth allows the ARRI Signature Prime lenses and all future large-format optics to be small and lightweight, with a fast T-stop and pleasing bokeh—a combination of features that would not be possible within the confines of the PL lens mount. The LPL mount will also be available for other ARRI cameras such as the ALEXA Mini, and is being licensed to third-party lens and camera manufacturers.

Accompanying the ALEXA LF camera are 16 large-format ARRI Signature Prime lenses, ranging from 12 mm to 280 mm and fitted with the ARRI LPL mount. While the Signature Primes exemplify state-of-the-art optical precision, they have been designed to render organic, emotionally engaging images, gently softening and texturizing the large format with natural skin tones and creamy bokeh. A fast T-stop of T1.8 facilitates shallow depth of field and the smooth focus fall-off gives subjects heightened presence in the frame.

The ARRI Signature Prime range is the first cine lens series to feature machined magnesium lens barrels, making the optics incredibly lightweight and robust. They are also the first to incorporate ARRI’s next-generation LDS-2 Lens Data System, with high data rates and absolute encoders for fast initializing. LDS-2 extends the possibilities of lens data and is being licensed to other lens and camera manufacturers.

ALEXA LF offers the same tried-and-true, versatile workflows as other ALEXA cameras. Recording at various resolutions is possible in uncompressed, unencrypted ARRIRAW or fast, efficient ProRes. Existing ARRI Look Files can be used with ALEXA LF, and the entire range of ARRI workflow software tools will support ALEXA large-format images. Lens metadata can be recorded from LDS-1, LDS-2 or /i capable lenses.

The Alexa LF has a new LPL mount that is optimized for the LF sensor. The PL-mount can also be used in the camera, but can not reach the corresponding resolution as the LPL-mount.

Features

  • 36.7 x 25.54mm maximum sensor size
  • 4448x3096 maximum capture resolution
  • 150fps possible in 2.39x1 4448x1856 ARRI Raw
  • ALEV IIII Sensor
  • A2X layout
  • Brand new LPL lens mount
  • Ships with LPL to PL adapter
  • 44mm flange focal distance
  • 12mm wider and longer than standard Alexa

Features:

  • 36.7 x 25.54mm maximum sensor size
  • 4448x3096 maximum capture resolution
  • 150fps possible in 2.39x1 4448x1856 ARRI Raw
  • ALEV IIII Sensor
  • A2X layout
  • Brand new LPL lens mount
  • Ships with LPL to PL adapter
  • 44mm flange focal distance
  • 12mm wider and longer than standard Alexa


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