Arri Alexa LF

Arri Alexa LF

El nuevo sistema de cámara de gran formato de ARRI consiste en la cámara ALEXA LF, las lentes ARRI Signature Prime, la montura para lente LPL y el adaptador PL-to-LPL. Con un sensor ligeramente más grande que el Full Frame, la cámara ALEXA LF graba 4.5K nativos con la mejor calidad de imagen general de ARRI. Esto permite a los cineastas explorar la estética inmersiva de gran formato al tiempo que conservan la colorimetría natural del sensor, los agradables tonos de piel y la sorprendente capacidad de los flujos de trabajo HDR. Los formatos de grabación versátiles, que incluyen ProRes eficientes y ARRIRAW, rueda hasta 150 fps, abarcan todos los requisitos de workflow en el set de rodaje.

Sensor Type

  • Large Format ARRI ALEV III (A2X) CMOS sensor with Bayer pattern color filter array

Sensor Size

  • 36.70 x 25.54 mm ⌀ 44.71 mm

Sensor Frame Rates

  • 0.75 – 150fps

Sensor Active Image Area (photosites)

  • LF Open Gate ProRes 4.5K: 4448 x 3096
  • LF Open Gate ARRIRAW 4.5K: 4448 x 3096
  • LF 16:9 ProRes HD: 3840 x 2160
  • LF 16:9 ProRes 2K: 3840 x 2160
  • LF 16:9 ProRes UHD: 3840 x 2160
  • LF 16:9 ARRIRAW UHD: 3840 x 2160
  • LF 2.39:1 ProRes 4.5K: 4448 x 1856
  • LF 2.39:1 ARRIRAW 4.5K: 4448 x 1856

Sensor Active Image Area (dimensions)

  • LF Open Gate ProRes 4.5K: 36.70 x 25.54 mm
  • LF Open Gate ARRIRAW 4.5K: 36.70 x 25.54 mm
  • LF 16:9 ProRes HD: 31.68 x 17.82 mm
  • LF 16:9 ProRes 2K: 31.68 x 17.82 mm
  • LF 16:9 ProRes UHD: 31.68 x 17.82 mm
  • LF 16:9 ARRIRAW UHD: 31.68 x 17.82 mm
  • LF 2.39:1 ProRes 4.5K: 36.70 x 15.31 mm
  • LF 2.39:1 ARRIRAW 4.5K: 36.70 x 15.31 mm

Recording File Container Size (pixel)

  • LF Open Gate ProRes 4.5K: 4480 x 3096
  • LF Open Gate ARRIRAW 4.5K: 4448 x 3096
  • LF 16:9 ProRes HD: 1920 x 1080
  • LF 16:9 ProRes 2K: 2048 x 1152
  • LF 16:9 ProRes UHD: 3840 x 2160
  • LF 16:9 ARRIRAW UHD: 3840 x 2160
  • LF 2.39:1 ProRes 4.5K: 4480 x 1856
  • LF 2.39:1 ARRIRAW 4.5K: 4448 x 1856

Recording File Image Content (pixel)

  • LF Open Gate ProRes 4.5K: 4448 x 3096
  • LF Open Gate ARRIRAW 4.5K: 4448 x 3096
  • LF 16:9 ProRes HD: 1920 x 1080
  • LF 16:9 ProRes 2K: 2048 x 1152
  • LF 16:9 ProRes UHD: 3840 x 2160
  • LF 16:9 ARRIRAW UHD: 3840 x 2160
  • LF 2.39:1 ProRes 4.5K: 4448 x 1856
  • LF 2.39:1 ARRIRAW 4.5K: 4448 x 1856

Exposure Latitude

  • 14+ stops over the entire sensitivity range from EI 160 to EI 3200 as measured with the ARRI Dynamic Range Test Chart (DRTC-1)

Exposure Index

  • Adjustable from EI 160-3200 in 1/3 stops
  • EI 800 base sensitivity

Shutter

  • Electronic shutter, 5.0°- 358°

Recording Formats

  • ARRIRAW (.ari)
  • ProRes 4444 XQ
  • ProRes 4444
  • ProRes 422 (HQ)
  • ProRes 422

Recording Media

  • SXR Capture DrivesSxS PRO+ Cards

Recording Frame Rates

  • LF Open Gate ProRes 4.5K: 0.75 – 60 fps
  • LF Open Gate ARRIRAW 4.5K: 0.75 – 90 fps
  • LF 16:9 ProRes HD: 0.75 – 60 fps
  • LF 16:9 ProRes 2K: 0.75 – 60 fps
  • LF 16:9 ProRes UHD: 0.75 – 60 fps
  • LF 16:9 ARRIRAW UHD: 0.75 – 90 fps
  • LF 2.39:1 ProRes 4.5K: 0.75 – 100 fps
  • LF 2.39:1 ARRIRAW 4.5K: 0.75 – 150 fps

Recording Modes

  • Standard real-time recording
  • No Pre-recording
  • No Intervalometer

Viewfinder Type

  • Electronic Viewfinder EVF-1 with 235 eyepiece
  • Electronic Viewfinder EVF-2 with ARRICAM eyepiece

Viewfinder Technology

  • EVF-1: F-LCOS viewfinder display
  • EVF-2: OLED viewfinder display

Viewfinder Resolution (pixel)

  • EVF-1: 1280 x 784
  • EVF-2: 1920 x 1080

Viewfinder Diopter

  • Adjustable from -5 to +5 diopters

Color Output

  • Rec 709
  • Rec 2020
  • Log C
  • Custom Look (ARRI Look File ALF-2)

Look Control

  • Import of custom 3D LUT
  • ASC CDL parameters (slope, offset, power, saturation)

White Balance

  • Manual and auto white balance, adjustable from 2000K to 11000K in 100K steps
  • Color correction adjustable range from -12 to +12 CC1 CC corresponds to 035 Kodak
  • CC values or 1/8 Rosco values

Filters

  • Manual behind the lens FSND filters: Optical Clear, 0.3, 0.6, 0.9, 1.2, 1.5, 1.8, 2.1, 2.4
  • Fixed optical low pass, UV, IR filter

Image Outputs

  • 1x proprietary signal output for EVF-1/EVF-2 viewfinder
  • 4x MON OUT: 1,5G (SMPTE ST292-1) and 6G (SMPTE ST2081-10)uncompressed HD video with embedded audio and metadata

Lens Squeeze Factors

  • 1.00
  • 1.25
  • 1.30
  • 1.50
  • 1.65
  • 1.80
  • 2.00

Exposure and Focus Tools

  • False Color
  • Peaking
  • Zoom

Audio Input

  • 1x XLR 5pin balanced stereo line in(Line input max. level +24dBu correlating to 0dBFS)

Audio Output

  • 3,5mm stereo headphone jackSDI (embedded)

Audio Recording

  • 2 channel linear PCM, 24 bit 48 kHz

Remote Control Options

  • Web-based remote control from phones, tablets and laptops via WiFi & EthernetWCU-4 hand-unit with control over lens motors and operational parameters via built-in white radio
  • Remote Control Unit RCU-4 via Ethernet

Interfaces

  • 1x LEMO 5pin LTC Timecode In/Out
  • 1x BNC SDI Return In1x LEMO 16pin EXT for accessories and sync
  • 1x LEMO 10pin Ethernet for remote control and sync
  • 1x SD Card (for user setups, look files etc)
  • 3x Fischer 12pin connectors for CLM lens motors
  • 2x Fischer 5pin LCS Lens Control System connectors for hand units

Wireless Interfaces

  • Built-in WiFi module (IEEE 802.11b/g)
  • Built-in White Radio for ARRI lens and camera remote control
  • Built-in Wireless Video System: 1920 x 1080, range 600m (2,000 ft) line of sight, OFDM (Orthogonal Frequency-Division Multiplexing) Bandwidth 40MHz, latency <1ms

Lens Mounts

  • LPL mount
  • PL mount

Flange Focal Depth

  • LPL mount: 44 mm
  • PL mount: 52 mm

Power Input

  • 1x Fischer 2pin BAT connector (18.5-34 V DC)
  • 1x On-board battery interface (19.5-34 V DC)

Power Consumption

  • ca. 120 W (recording ProRes 4444 at 24 fps in LF 16:9 sensor mode onto an SxS PRO+ 256 GB card with EVF-1 and wireless video on but without accessories)
  • ca. 160 W (recording ARRIRAW at 90 fps in LF Open Gate sensor mode onto an SXR Capture Drive 2 TB with EVF-1 and wireless video on but without accessories)

Power Outputs

  • 4x Fischer 3pin 24V RS
  • 1x LEMO 2pin 12V

Power Management

  • Active ORing between BAT connector and on-board battery adapters

Measurements (HxWxL)

  • 158 x 201 x 351 mm (camera body with LPL lens mount)

Weight

  • ~ 7.8 kg(camera body with LPL lens mount)

Operating Temperature

  • -20° C to +45° C @ 95% relative humidity max, non condensing

Storage Temperature

  • -30° C to +70° C

Sound Level

  • < 20 dB(A) at 24fps

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