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Digital Cameras

ARRI ALEXA LF

ARRI ALEXA LF

ARRI ALEXA LF

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specification

include

Sensor Type
ARRI ALEV III (A2X) CMOS sensor with Bayer pattern color filter array
Sensor Maximum Number of Photosites and Size
4448 x 3096
36.70 x 25.54 mm / 1.444 x 1.005"
⌀ 44.71 mm / 1.760"
Sensor Frame Rates
0.75 - 150 fps
Weight
∼7.8 kg / ∼17.2 lbs
(camera body with LPL lens mount)
Photosite Pitch
8.25 μm
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 / 1.445 x 1.006"
LF Open Gate ARRIRAW 4.5K: 36.70 x 25.54 mm / 1.445 x 1.006"
LF 16:9 ProRes HD: 31.68 x 17.82 mm / 1.247 x 0.702"
LF 16:9 ProRes 2K: 31.68 x 17.82 mm / 1.247 x 0.702"
LF 16:9 ProRes UHD: 31.68 x 17.82 mm / 1.247 x 0.702"
LF 16:9 ARRIRAW UHD: 31.68 x 17.82 mm / 1.247 x 0.702"
LF 2.39:1 ProRes 4.5K: 36.70 x 15.31 mm / 1.445 x 0.603"
LF 2.39:1 ARRIRAW 4.5K: 36.70 x 15.31 mm / 1.445 x 0.603"
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
Dynamic Range
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)
Apple ProRes 4444 XQ
Apple ProRes 4444
Apple ProRes 422 HQ
Apple ProRes 422
Recording Media
SXR Capture Drives
SxS 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