Alexa


ALEXA

The Original :

The first camera on the scene remains at the center of the family; it is the keystone of a modular and upgradeable system with exceptional image performance that is simple to operate, reliable in even the most extreme environments and versatile enough to cover a wide range of workflow and budget requirements. Whether your production is destined for the cinema or television, ALEXA will empower you to tell your story in exactly the way you think it should be told, with pictures of breathtaking richness and detail.

The original ALEXA comes with a 16:9 sensor and the original SxS Module that accepts two SxS PRO cards for recording in-camera ProRes or DNxHD. ARRIRAW recording is possible with an external recorder

ALEXA Technical Data :

Camera Type
35 format film-style digital camera with an electronic viewfinder, a 16:9 active sensor area, integrated shoulder arch and receptacles for 15 mm lightweight rods.
Sensor
35 format ALEV III CMOS sensor with Dual Gain Architecture (DGA) & Bayer pattern color filter array
Photosites
2880 x 1620 used for ARRIRAW 16:9
2880 x 1620 down sampled to 1920 x 1080 for HD-SDI,
ProRes HD 16:9 and DNxHD HD 16:9
2868 x 1612 down sampled to 2048 x 1152 for ProRes 2K 16:9
For a pdf with details about the recording areas, surround views and framelines click here
Operating Modes
Regular or High Speed mode. High Speed mode requires license purchase. Switching takes approx. 40 seconds.
Frame Rates
ARRIRAW 0.75 – 60 fps
ProRes HD 0.75 – 120 fps
ProRes 2K 0.75 – 60 fps
DNxHD HD 0.75 – 120 fps
All speeds adjustable with 1/1000 fps precision. To record above 60 fps, the camera needs to be switched to high speed mode (optional license).
For detailed information about frame rates, click here
Shutter
Electronic rolling shutter, 5.0º – 358.0º up to 60 fps; 5.0° to 356° above 60 fps. Shutter angle adjustable with 1/10 degree precision.
Filters
Permanent filters in front of the sensor: optical low pass, UV, IR
Exposure Latitude
Latitude 14+ stops for all sensitivity settings from EI 160 to EI 3200, as measured with the ARRI Dynamic Range Test Chart (DRTC).
For a graphic of how the exposure latitude shifts at different EIs, click here
Exposure Index

Values behind the exposure index are the number of stops above and below 18% grey. These values are for Log C. Rec 709 is the same except for 0.3 stops fewer in the low end at EI 160, 200 and 400.
White Balance
Presets for 3200 (tungsten), 4300 (fluorescent), 5600 (daylight) and 7000 (daylight cool). Automatic calculation or manual white balance for 2000 to 11000 Kelvin, adjustable in 100 K steps
Color Correction
While white balance changes the red/blue hue of the image, color correction changes green/magenta. Adjustable range from -12 to +12 CC. 1 CC corresponds to 035 Kodak CC values or 1/8 Rosco values.
Sound Level
Under 20 db(A) while recording ProRes @ 24 fps and ≤ +30° Celsius (≤ +86° Fahrenheit) with lens attached and fan mode set to ‘Regular’, measured 1 m/3 feet in front of the lens. Silent operation at higher temperatures possible with fan mode set to ‘Rec low’.
Power In
Three possible inputs: BAT connector, optional battery adapter back or optional battery adapter top. All inputs accept 10.5 to 34 V DC. Approx. 85 W power draw for camera and EVF-1 in typical use recording ProRes at 24 fps to an SxS PRO card at room temperature, without accessories. Initial power draw during power up is higher.
Power Out
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 voltage = output voltage. RS and EXT connectors combined are limited to 2.2 A. ETHERNET is limited to 1.2 A. Maximum power draw is also limited by the power source.
Weight
ALEXA body with SxS Module: 6.3 Kg/13.8 lbs.
ALEXA body with SxS Module, electronic viewfinder and handle: 7.7 Kg/16.9 lbs.
Dimensions
Length: 332 mm/12.95”, width: 153 mm/6.02”, height: 158 mm/6.22”.
Dimensional drawings available at www.arri.com/alexa/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.
Lens Mount
ARRI Exchangeable Lens Mount (ELM); ships with Lens Adapter PL Mount, 54 mm stainless steel PL mount, Super 35 centered. 52.00 mm nominal flange focal depth.
Viewfinder
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.
Assistive Displays
For EVF-1 and MON OUT: preset and custom frame lines, user rectangles, surround view, camera status, false color exposure check, peaking focus check, compare stored image with live image, RETURN IN video and optional anamorphic de-squeeze (license key required). For MON OUT additionally: Reel & clip number.
For a graphic of which false color indicates which exposure level, click here
Control
Camera right: Main user interface with a 3″ transflective 400 x 240 pixel LCD color screen, illuminated buttons, button lock and jog wheel. Camera left: Operator interface with illuminated buttons and button lock. Optional accessory Remote Control Unit RCU-4 for cabled remote control via camera ETHERNET connector. Optional accessory Wireless Compact Unit WCU-4 for wireless remote control (UMC-3A required).
In-camera
QuickTime/ProRes or MXF/DNxHD recording onto one or two (Dual Recording) SxS PRO cards.
Recording
All formats include embedded audio, timecode and metadata.
For more details, click here
Recording Outputs
ARRIRAW: 2880 x 1620 (16:9), uncompressed, unencrypted 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 at 23.976, 24, 25, 29.97, 30, 50, 59.94, or 60 fps. Recording other speeds requires a recorder with Variflag support. Legal or extended range signal mapping.
Monitor Output
HD-SDI video: uncompressed 1920 x 1080 (16:9) 4:4:4 RGB or 4:2:2 YCbCr at 23.976, 24, 25, 29.97, 30, 50, 59.94, or 60 fps. Recording other speeds requires a recorder with Variflag support. Legal or extended range signal mapping.
Image Processing
16 bit linear internal image processing in full ALEXA native color space. Target output color spaces for ProRes, DNxHD, REC OUT and MON OUT: Log C or Rec 709. For Rec 709, a customized look can be applied during record and playback with ARRI Look Files. Optional horizontal image mirroring.
Synchronization
Master/Slave mode for precision sync of settings, sensor, processing, HD-SDI outputs and QuickTime/ProRes or MXF/DNxHD recording for 3D applications. PHASE user button for shifting camera phase to move phase artifacts out of frame, i.e. when shooting a CRT monitor or rear screen projector (works in Rec Run TC mode).
Playback
Playback of ProRes or DNxHD from SxS PRO cards visible on EVF-1, MON OUT and REC OUT. Playback audio available over headphone jack and embedded in the MON OUT and REC OUT signal.
Audio
1x XLR 5 pin AUDIO IN for 2 channel, line level, balanced audio. 24 bit/48 kHz A/D conversion. Uncompressed PCM audio recording to ARRIRAW, ProRes, DNxHD and embedded in all HD-SDI outputs. Only available with same project/sensor speed at 23.976, 24, 25, 29.97 and 30 fps. Max of 2.5 dBm output from AUDIO OUT headphones connector.
Connectors
2x slots for SxS PRO cards (SxS)
2x BNC recording out HD-SDI, 1.5G/3G (REC OUT 1 and REC OUT 2)
1x BNC monitoring out HD-SDI, 1.5G (MON OUT)
1x XLR 5-pin analog audio in (AUDIO IN)
1x BNC return video in HD-SDI, 1.5G (RET/SYNC IN)
1x LEMO 16-pin external accessory interface (EXT)
1x Fischer 2-pin 24 V power in (BAT)
2x Fischer 3-pin 24 V remote start and accessory power out (RS)
1x LEMO 2-pin 12 V accessory power out (12 V)
1x LEMO 5-pin timecode in/out (TC)
1x TRS 3.5 mm headphone mini stereo jack (AUDIO OUT)
1x custom LEMO 16-pin electronic viewfinder (EVF)
1x custom LEMO 10-pin Ethernet with 24 V power (ETHERNET)
BNC connectors designed for fast exchange without camera disassembly have been used for ALEXA since approximately mid 2012. These connectors require a special tool.
SD Card
For importing and storing ARRI Look Files, camera set up files, frame line files, feature license keys and user pixel masks. Stores captured stills from the REC OUT image path in ARRIRAW (.ari, 12 bit), TIFF (.tif, 16 bit), DPX (.dpx, 10 bit) or JPEG (.jpg, 8 bit) format (1). Stores log files. Also used for installing Software Update Packets (SUPs).
Upgrades
The Storage Interface Module (SxS Module) can be exchanged for future storage modules (i.e. XR Module). The Electronics Interface Module can be exchanged for future control electronics (i.e. Plus upgrade). Exchangeable Lens Mount (ELM) allows other lenses beyond PL mount lenses to be used. Simple camera software updates via free-of-charge Software Update Packets (SUPs) and payable license keys – Anamorphic De-squeeze, High Speed and DNxHD.

(1) When REC OUT is set to ‘ARRIRAW’, frame grabs are only possible in the .ari format. Frame grabs are not possible during High Speed, 16:9 2K or when the option ‘REC OUT = MON OUT Clone’ is chosen.
Note:Technical data based on Software Update Packet SUP 9.1 (ALEXA Classic).
All data subject to change without notice.


Corporate Office
M/s. Cineom Broadcast India Pvt. Ltd,
Unit 4C, 4th Floor, Goldline Business Centre,
Malad New Link Road,
Malad (W), Mumbai-400064.
Tel No.: +912242109000,
Fax No.: +912228787303,
Email: sales@cineom.com

Back to Top