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ARRI Alexa LF
Overview
  • Large-format aesthetic with ALEXA image quality
  • Three sensor modes for limitless applications
  • A larger mount for a larger format
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ARRI Alexa LF

MQ Group / MQ Lightings
G/F Lydia Building, #39 Polaris Street,
Bel-Air Village Makati City, Philippines. 1260

Landline:

(+632) 890 - 8858
(+632) 896 - 1471
(+632) 896 - 1455
(+632) 896 - 1379

Mobile:

(+63)9171671168
Chat with us - Viber, Wechat, and Line

Email:

Sales@mqgroup.com.ph
Admin@mqgroup.com.ph
Marketing@mqgroup.com.ph

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Description

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.

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.

 

Additional Information

ALEXA LF technical details

     

Camera Type

 

Large Format (LF) digital camera with electronic viewfinder 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

 

Sound level ≤ 20 db(A) while recording LF Open Gate ProRes 4.5 K 4444 @ 30 fps and ≤ +30° Celsius (≤ +86° Fahrenheit), measured 1 m/3 feet in front of the lens

Power In

 

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

HD (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

3D LUTs available for SDR, HDR PQ and HDR HLG

Playback

 

ARRIRAW or ProRes

Audio

 

1x XLR 5 pin AUDIO IN for 2 channels, line leve

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