ARRI ALEXA M SPECIFICATIONS Camera Type 35 format film

35 format film-style digital camera with separate camera head and body.
16:9 sensor mode:
2880 x 1620 for ARRIRAW, 2880 x 1620 down sampled to 1920 x 1080 for HD
video, ProRes and DNxHD
4:3 sensor mode:
2880 x 2160 for ARRIRAW, 2880 x 2160 down sampled to 1440 x 1080 (pillar box)
for monitoring in EVF-1 and HD video (MON OUT only)
16:9 or 4:3 sensor mode. 4:3 mode is currently only available for ARRIRAW.
Regular (max. 60 fps) or High Speed mode (max. 120 fps).
Frame Rates 16:9 sensor mode:
ProRes 422 (Proxy), 422 (LT), 422 and 422 (HQ), DNxHD 145 and 220x: 0.75 – 120
fps; ProRes 4444: 0.75 – 60 fps; HD-SDI: 0.75 – 60 fps; ARRIRAW: 0.75 – 60 fps
Sound Level
4:3 sensor mode:
ARRIRAW: 0.75 – 48 fps
Electronic rolling shutter, 0.75 - 60 fps: 5.0º - 358.0º, 60 - 120 fps: 356º. Shutter
angle setting precision: 1/10 degree.
14 stops for all sensitivity settings from EI 160 to EI 3200, as measured with the
ARRI Dynamic Range Test Chart (DRTC)
Values behind the exposure index are the number of stops above and below 18%
grey. These values are for Log C. Rec 709 and DCI P3 are the same except for 0.5
stops fewer in the low end at EI 160, 0.4 stops fewer in the low end at EI 200 and
0.2 stops fewer in the low end at EI 400.
Under 20 db(A) @ 24 fps and ≤ +30° Celsius (≤ +86° Fahrenheit) with lens
attached, measured 1 m/3 feet in front of the lens.
Power In
Three inputs at the camera body: BAT connector, battery adapter back and
battery adapter top. All accept 10.5 to 34 V DC. 85 W power draw for body in
typical use recording to SxS PRO cards, without accessories. 40W power draw
for head in typical use without accessories. A minimum of 15V power input to
the body is required to power the camera head from the body through a
standard SMPTE 311M hybrid fiber cable up to 50 meters, without
accessories. The camera head has one 10.5 to 34 V DC power input that can
be used to power the head independently from the camera body.
Power Out
Several outputs at the camera body: 12 V connector: limited to 12 V, up to
2.2 A. RS, EXT and ETHERNET: input below 24 V is regulated up to 24 V, above
24 V: input = output voltage. Both RS and EXT connectors combined: up to 2.2
A. ETHERNET: up to 1.2 A. Maximum power draw is also limited by the power
source. The camera head offers two RS connectors and one ETHERNET
connector, with the same specifics as on the camera body.
ALEXA camera body + SxS Module: 5.5 kg/12.1 lbs; ALEXA camera head: 2.9
kg/6.4 lbs
Body: Length: 323mm, width: 153mm, height: 158mm; Head: Length:
212mm, width: 129mm, height: 149mm More detailed drawings can be found
in the ALEXA Dimensions PDF on our Downloads
Environmental -20° C to +45° C (-4° F to +113° F) @ 95% humidity max, non condensing.
Splash and dust proof through sealed electronics. System cooling through
radiator/single fan on camera head and body.
Lens Mount
ARRI Exchangeable Lens Mount (ELM); ships with Lens Adapter PL Mount
with LDS contacts, 54 mm stainless steel PL mount, Super 35 centered.
Low latency (≤1 frame delay) electronic color viewfinder ARRI EVF-1 with
1280 x 784 F-LCOS micro display (image: 1280 x 720, status bars: 1280 x 32
above and 1280 x 32 below image) and ARRI LED illumination, both
temperature controlled. Image can be flipped for use of viewfinder on
camera left or right. Viewfinder Mounting Bracket allows movement of
viewfinder forward/backwards, left/right, up/down, 360 degree-rotation and
placement on camera left or right. EVF-1 controls: viewfinder and basic
camera settings, ZOOM button (2.25x pixel to pixel magnification), EXP
button (false color exposure check) and jog wheel.
Camera body right: main user interface with 3” transflective 400 x 240 pixel
LCD color screen, illuminated buttons, button lock and jog wheel. Camera
head back: REC button and POWER button (POWER button is active when
head is run by local power supply through the head’ s BAT input).
Records Apple QuickTime files with ProRes encoding or MXF files with DNxHD
encoding onto either one or two (Dual Recording) SxS PRO cards. All codecs
legal range with embedded audio, timecode and metadata.
2x 1.5 G or 3G REC OUT BNC connectors on the camera body for ARRIRAW TOutputs
Link or HD-SDI video. Both with embedded audio, timecode, metadata and
optional recording flag.
ARRIRAW 2880 x 1620 (16:9), 2880 x 2160 (4:3) uncompressed 12 bit log
without white balance or exposure index processing applied. Requires an
ARRIRAW T-Link certified recorder.
HD-SDI video: uncompressed 1920 x 1080 (16:9) 4:4:4 RGB or 4:2:2 YCbCr; both
legal or extended range. Recording frame rates other than HD standard (23.976,
24, 25, 29.97, 30, 50, 59.94, 60 fps) requires a recorder with Variflag support.
Slots for SxS PRO cards (SxS), Camera body
2x BNC recording out HD-SDI, 1.5G/3G (REC-OUT 1/2), Camera body
1x BNC monitoring out HD-SDI, 1.5G (MON OUT), Camera body
1x XLR 5 pin audio in (AUDIO IN), Camera body
1x BNC return signal HD-SDI, 1.5G (RET/SYNC IN), Camera body
1x LEMO 16 pin external accessories (EXT), Camera body
1x Fischer 2 pin 24 V power in (BAT), Camera body
2x Fischer 3 pin 24 V remote start and accessory power out (RS), Camera body
1x LEMO 2 pin 12 V accessory power out (12 V), Camera body
1x LEMO 5 pin timecode in/out (TC), Camera body
1x TRS 3.5 mm headphone mini stereo jack out (AUDIO OUT), Camera body
2x LEMO 10 pin Ethernet with 24 V power (ETHERNET), Camera body
1x LEMO SMPTE 304M hybrid fiber connector (Optical Link), Camera body
1x LEMO SMPTE 304M hybrid fiber connector (Optical Link), Camera head
1x LEMO custom 16 pin electronic viewfinder (EVF), Camera head
1x Fischer 2 pin 24 V power in (BAT), Camera head
2x Fischer 3 pin 24 V remote start and accessory power out (RS), Camera head
1x LEMO 10 pin Ethernet with 24 V power (ETHERNET), Camera head
SD Card
For importing ARRI Look Files, camera set up files, frame line files and feature
license keys. Stores captured stills from the REC OUT image path during Regular
Speed (not High Speed) in ARRIRAW (.ari, 12 bit), TIFF (.tif, 16 bit), DPX (.dpx, 10
bit) and JPEG (.jpg, 8 bit) format as well as log files. Also used for software
For complete specifications visit:
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