Taking too long? Close loading screen.
#0d0d15

ALEXA LF

Large-format aesthetic with ALEXA image quality

Featuring a sensor slightly larger than full frame, ALEXA LF records native 4.5K 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.

Three sensor modes for limitless applications

ALEXA LF has the largest sensor of any full-frame cinema camera on the market. Maintaining the ALEXA family’s optimal pixel size for best overall image quality results in a 4448 x 3096 picture, which can be recorded in full, up to 90 fps, 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.

LF Open Gate

36.70 x 25.54 mm
4448 x 3096
ø 44.71 mm

LF 16:9

31.68 x 17.82 mm
3840 x 2160
ø 36.35 mm

LF 2.39:1

36.70 x 15.31 mm
4448 x 1856 photo sites
ø 39.76 mm

ARRIRAW 90 fps
ProRes 422 60 fps
ProRes 422 HQ 60 fps
ProRes 4444 60 fps
ProRes 4444 XQ 40 fps
ARRIRAW 90 fps
ProRes 422 60 fps
ProRes 422 HQ 60 fps
ProRes 4444 60 fps
ProRes 4444 XQ 60 fps

 

ARRIRAW 150 fps
ProRes 422 100 fps
ProRes 422 HQ 100 fps
ProRes 4444 100 fps
ProRes 4444 XQ 60 fps

A larger mount for a larger format

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.

ALEXA LF technical details

Camera Type Large Format (LF) digital camera with electronic view finder EVF-1 and built-in radios for ARRI Wireless Remote System, ARRI Wireless Video System and WiFi
Compatibility All current ARRI ALEXA accessories, LPL lenses and PL lenses with PL-to-LPL adapter
Sensor Mode LF Open Gate 36.70 x 25.54 mm

4448 x 3096, ø 44.71 mm

ARRIRAW: 0.75 – 90 fps

ProRes: 0.75 – up to 60 fps

Sensor Mode LF 16:9 31.68 x 17.82 mm

3840 x 2160, ø 36.35 mm

ARRIRAW: 0.75 – 90 fps

ProRes: 0.75 – 60 fps

Sensor Mode LF 2.39:1 36.70 x 15.31 mm

4448 x 1856, ø 39.76 mm

ARRIRAW: 0.75 – 150 fps

ProRes: 0.75 – up to 100 fps

Shutter Electronic rolling shutter, 5.0º – 358.0º
Internal ND Filter One of 8 available Large Format Full Spectrum Neutral Density (LF FSND) filters can be inserted manually in front of the sensor (ND 0.3 to ND 2.4)
Exposure Latitude 14+ stops
Exposure Index EI 800
Sound Level 20 db(A) while recording LF Open Gate ProRes 4.5K 4444 @ 30 fps and ≤ +30° Celsius (≤ +86° Fahrenheit), measured 1 m/3 feet in front of the lens
Power In 11.5 to 34 V DC
Power Out 4x RS (24 V), 1x 12V (12 V), 1x EXT (24 V), 1x ETH (24 V)
Weight (body + LPL) 7.8 kg/17.2 lbs.
Dimensions (body + LPL) L 364 mm/14.33”

W 201 mm/7.91”

H 158 mm/6.22”

Operating Temperature -20° C to +45° C (-4° F to +113° F)
Lens Mount 62 mm LPL mount (LDS-1, LDS-2 & /i)
Flange Focal Depth 44 mm
Recording Codecs ARRIRAW (.ari) QuickTime/ProRes (422, 422 HQ, 4444 & 4444 XQ)
Recording Resolutions 4.5K (sensor modes LF Open Gate and LF 2.39:1)

UHD (sensor mode LF 16:9)

2K 16:9 (in-camera downscale in sensor mode LF 16:9)

HD 16:9 (in-camera downscale in sensor mode LF 16:9

Supported Media SxS PRO+ 256 GB (ProRes)

SXR Capture Drives 1 TB (ARRIRAW or ProRes)

SXR Capture Drives 2 TB (ARRIRAW or ProRes

Monitor Outputs MON OUT 1a, 1b and 2: SDI 6G UHD or SDI 1.5G HD up to 30 fps

MON OUT 3: SDI 1.5 G HD up to 30 fps, also wireless video

Anamorphic de-squeeze for 1.25x, 1.3x, 1.5x, 2x lens squeeze ratios

Image Processing 16 bit linear in ALEXA Wide Gamut/Log C color space

Target output color spaces: Log C, Rec 709 or Rec 2020

Supports ARRI Look File (ALF-2) with CDL values and a 3D LUT

ARRI Look Files available for SDR, HDR PQ and HDR HLG

Playback ARRIRAW or ProRes
Audio 1x XLR 5 pin AUDIO IN for 2 channels, line level

TECH TALK videos

ALEXA LF/ LPL lens mount & PL-to-LPL adapter

This video looks at the new LPL mount and PL-to-LPL adapter, which are designed to give you a very wide range of creative lens options for the ALEXA LF.

ALEXA LF/ Large-format image

A quick look at how the ALEXA LF delivers the same picture quality as other ARRI ALEXAs but with less noise, and new noise reduction options.

ALEXA LF/Sensor

An introduction to the sensor at the heart of the new ALEXA LF – a sensor that is slightly larger than full frame, and that is Netflix compatible in all modes.

ALEXA LF/ Features

In this short film we take you through some of the features of the new ALEXA LF – its user interface, compatibility with existing accessories and monitoring outputs.

ALEXA LF/ Workflow

The ALEXA LF can record onto ARRIRAW or ProRes, and gives the option to record in native resolution, or to ‘down-res’ to HD or 2K as required.

shares
WordPress Video Lightbox