Arri intriduces a complete range of large format system. Bases on a large format 4k version of the Alexa Sensor, the system comprises Alexa LF Camera, Arri Signature Prime Lenses, LPL lens mount and PL-LPL Adaptor. These system elements have been designed to take full advantage of the enlarged sensor while also offering compatibility with existing lenses, accessories and workflows.
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.
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.
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 | 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 (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 level |
Name | ARRI
SIGNATURE PRIME 18/T1.8 | ARRI
SIGNATURE PRIME 21/T1.8 | ARRI
SIGNATURE PRIME 25/T1.8 | ARRI
SIGNATURE PRIME 29/T1.8 | |||||||
Release | 2018 | 2018 | 2018 | 2018 | |||||||
Lens Mount | LPL | LPL | LPL | LPL | |||||||
MOD from sensor plane (minimum marked distance) | 0.35 m / 14″ | 0.35 m / 14″ | 0.35 m / 14″ | 0.35 m / 14″ | |||||||
MOD from lens front | 0.13 m / 5.1″ | 0.13 m / 5.1“ | 0.13 m / 5.1″ | 0.13 m / 5.1“ | |||||||
Length from flange | 178 mm / 7.01“ | 178 mm / 7.01“ | 178 mm / 7.01“ | 178 mm / 7.01“ | |||||||
Magnification Ratio at MOD (Paraxial) | 1:9.2 | 1:8.2 | 1:7.1 | 1:6.4 | |||||||
Entrance pupil position (related to image plane, in direction to object) | 189.9 mm / 7.48“ | 183.4 mm / 7.22“ | 178.1 mm / 7.01“ | 166.0 mm / 6.54“ | |||||||
Angle of view
H – V – D | 91.4° / 71.0° / 102.6° | 82.8° / 63.0° / 94.0° | 73.0° / 54.4° / 84.0° | 65.2° / 47.8° / 75.8° | |||||||
Front diameter | 114 mm / 4.49“ | 114 mm / 4.49“ | 114 mm / 4.49“ | 114 mm / 4.49“ | |||||||
Maximum housing diameter | 115 mm / 4.53″ | 115 mm / 4.53″ | 115 mm / 4.53″ | 115 mm / 4.53″ | |||||||
Weight (lens only) | 2.0 kg / 4.4lb | 2.1 kg / 4.6lb | 1.9 kg / 4.2lb | 1.8 kg / 4.0lb |
Name | ARRI
SIGNATURE PRIME 35/T1.8 | ARRI
SIGNATURE PRIME 40/T1.8 | ARRI
SIGNATURE PRIME 47/T1.8 | ARRI
SIGNATURE PRIME 58/T1.8 | |||||||
Release | 2018 | 2018 | 2018 | 2018 | |||||||
Lens Mount | LPL | LPL | LPL | LPL | |||||||
MOD from sensor plane (minimum marked distance) | 0.35 m / 14″ | 0.35 m / 14″ | 0.45 m / 18“ | 0.45 m / 18“ | |||||||
MOD from lens front | 0.13 m / 5.1″ | 0.13 m / 5.1“ | 0.23 m / 9.0“ | 0.23 m / 9.0“ | |||||||
Length from flange | 178 mm / 7.01“ | 178 mm / 7.01“ | 178 mm / 7.01“ | 178 mm / 7.01“ | |||||||
Magnification Ratio at MOD (Paraxial) | 1:5.4 | 1:4.8 | 1:6.3 | 1:5.3 | |||||||
Entrance pupil position (related to image plane, in direction to object) | 162.5 mm / 6.40“ | 159.8 mm / 6.29“ | 156.1 mm / 6.15“ | 145.4 mm / 5.72“ | |||||||
Angle of view H – V – D for LF Open Gate | 55.4° /40.2° / 65.2° | 49.2° / 35.4° / 58.2° | 42.6° / 30.4° / 50.8° | 34.8° / 24.8° / 41.8° | |||||||
Front diameter | 114 mm / 4.49“ | 114 mm / 4.49“ | 114 mm / 4.49“ | 114 mm / 4.49“ | |||||||
Maximum housing diameter | 115 mm / 4.53″ | 115 mm / 4.53″ | 115 mm / 4.53″ | 115 mm / 4.53″ | |||||||
Weight (lens only) | 1.7 kg / 3.7lb | 1.9 kg / 4.2lb | 1.8 kg / 4.0lb | 2.1 kg / 4.6lb |
Name | ARRI
SIGNATURE PRIME 75/T1.8 | ARRI
SIGNATURE PRIME 95/T1.8 | ARRI
SIGNATURE PRIME 125/T1.8 | ARRI
SIGNATURE PRIME 150/T2.5 | |||||||
Release | 2018 | 2018 | 2018 | 2018 | |||||||
Lens Mount | LPL | LPL | LPL | LPL | |||||||
MOD from sensor plane (minimum marked distance) | 0.65 m / 26“ | 0.85 m / 3‘ 1“ | 1 m / 3‘ 4“ | 1.5 m / 5‘ | |||||||
MOD from lens front | 0.43 m / 16.9“ | 0.63 m / 2‘ 1“ | 0.78 m / 2‘ 7“ | 1.25 m / 4‘ 2“ | |||||||
Length from flange | 178 mm / 7.01“ | 178 mm / 7.01“ | 178 mm / 7.01“ | 208 mm / 8.19“ | |||||||
Magnification Ratio at MOD (Paraxial) | 1:7.2 | 1:7.9 | 1:7.0 | 1:9.0 | |||||||
Entrance pupil position (related to image plane, in direction to object) | 118.6 mm / 4.67“ | 86.6 mm / 3.41“ | 66.3 mm / 2.61“ | 145.4 mm / 5.72“ | |||||||
Angle of view H – V – D for LF Open Gate | 27.6° /19.4° / 33.2° | 21.8° / 15.2° / 26.4° | 16.6° / 11.6° / 20.2° | 13.8° / 9.8° / 16.8° | |||||||
Front diameter | 114 mm / 4.49“ | 114 mm / 4.49“ | 114 mm / 4.49“ | 114 mm / 4.49“ | |||||||
Maximum housing diameter | 115 mm / 4.53″ | 115 mm / 4.53″ | 115 mm / 4.53″ | 135 mm / 5.31“ | |||||||
Weight (lens only) | 1.9 kg / 4.2lb | 2.4 kg/5.3lb | 2.3 kg / 5.1lb | 3.5 kg/7.7lb |
Name | ARRI
SIGNATURE PRIME 200/T2.5 | ARRI
SIGNATURE PRIME 12/T1.8 | ARRI
SIGNATURE PRIME 15/T1.8 | ARRI
SIGNATURE PRIME 280/T2.8 | |||||||
Release | 2018 | 2019 | 2019 | 2019 | |||||||
Lens Mount | LPL | LPL | LPL | LPL | |||||||
MOD from sensor plane (minimum marked distance) | 1.8 m / 6‘ | 0.35 m / 14“ | 0.35 m / 14“ | 2.5 m / 8‘ 2“ | |||||||
MOD from lens front | 1.54 m / 5‘ | tbd | tbd | tbd | |||||||
Length from flange | 218 mm / 8.58“ | tbd | tbd | tbd | |||||||
Magnification Ratio at MOD (Paraxial) | 1:8.3 | tbd | tbd | tbd | |||||||
Entrance pupil position (related to image plane, in direction to object) | 48.0 mm / 1.89“ | tbd | tbd | tbd | |||||||
Angle of view H – V – D for LF Open Gate | 10.4° / 7.2° / 12.6° | 113.6° / 93.6° / 123.5° | 101.5° / 80.8° / 112.3° | 7.5° / 5.2° / 9.1° | |||||||
Front diameter | 114 mm / 4.49“ | tbd | tbd | 134 mm / 5.28“ | |||||||
Maximum housing diameter | 135 mm / 5.31“ | tbd | tbd | tbd | |||||||
Weight (lens only) | 3.6 kg/7.9lb | tbd | tbd | 5.5 kg/12.1lb |