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ARRI Alexa LF Basic Camera Set
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.
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.
visit arri.com for more information or technical data.
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.
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.
visit arri.com for more information or technical data.
| 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 ARRIRAW: 0.75 - 90 fps ProRes: 0.75 – 60 fps 3840 x 2160, ø 36.35 mm |
| 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 | 44mm |
| 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 |
Includes:
K1.0014861 Alexa LF camera body
K2.0008429 SXR Adapter
K2.0006338 SxS Adapter 2
K2.72018.0 SD Card
K2.72008.0 Electronic Viewfinder EVF-1
K2.74001.0 Viewfinder Mounting Bracket VMB-3
K2.72012.0 Viewfinder Cable Short (0.35m/1.2ft) KC 150-S
K2.72007.0 Centre Camera Handle (CCH-1)
K2.0016936 PL-to-LPL Adapter
KK.0015010 Wireless Video Receiver WVR-1
K1.0014861 Alexa LF camera body
K2.0008429 SXR Adapter
K2.0006338 SxS Adapter 2
K2.72018.0 SD Card
K2.72008.0 Electronic Viewfinder EVF-1
K2.74001.0 Viewfinder Mounting Bracket VMB-3
K2.72012.0 Viewfinder Cable Short (0.35m/1.2ft) KC 150-S
K2.72007.0 Centre Camera Handle (CCH-1)
K2.0016936 PL-to-LPL Adapter
KK.0015010 Wireless Video Receiver WVR-1