Alexa XT


ALEXA XT

The Original – Reloaded :

The ALEXA XT (Xtended Technology) ads a number of significant improvements to the base model ALEXA: in-camera ARRIRAW recording, internal ND filtration, a 4:3 Super 35 sensor, Open Gate sensor mode, integrated CDL capture, LDS PL mount, new viewfinder mounting bracket, included anamorphic de-squeeze and high speed licenses as well as a new, super silent fan. These features will expand on the benefits that have already made ALEXA such an extraordinary success – highest overall image quality and lowest overall production cost through reliability, ergonomics and efficient workflows.

ALEXA XT Technical Data :

Camera Type
35 format film-style digital camera with an electronic viewfinder, an Open Gate/4:3/16:9 switchable active sensor area, built-in filter holder, Lens Data System, integrated shoulder arch and receptacles for 15 mm lightweight rods
Sensor
35 format ALEV III CMOS sensor with Dual Gain Architecture (DGA) and 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
2880 x 2160 used for ARRIRAW 4:3
2868 x 2150 down sampled to 2048 x 1536 for ProRes 2K 4:3
Open Gate
3414 x 2198 used for ARRIRAW Open Gate
For a pdf with details about the recording areas, surround views and framelines click here
Operating Modes
Modes 16:9, 4:3 or Open Gate sensor modes. Switching takes approx. 60 seconds. 16:9 available for ARRIRAW, ProRes and DNxHD recording. 4:3 only available for ARRIRAW and ProRes 2K recording. Open Gate only available for ARRIRAW recording.
Regular or High Speed mode. Switching takes approx. 40 seconds.
Operating Modes
16:9, 4:3 or Open Gate sensor modes. Switching takes approx. 60 seconds. 16:9 available for ARRIRAW, ProRes and DNxHD recording. 4:3 only available for ARRIRAW and ProRes 2K recording. Open Gate only available for ARRIRAW recording.
Regular or High Speed mode. Switching takes approx. 40 seconds.
Frame Rates
ProRes HD 0.75 – 120 fps
ProRes 2K 0.75 – 60 fps
DNxHD HD 0.75 – 120 fps
ARRIRAW 0.75 – 120 fps
ProRes 2K 0.75 – 48 fps
ARRIRAW 0.75 – 90 fps
Open Gate
ARRIRAW 0.75 – 75 fps
Note: some limitations based on recording media or codec settings apply.
For detailed information about frame rates, click here
Frame Rates
ProRes HD 0.75 – 120 fps
ProRes 2K 0.75 – 60 fps
DNxHD HD 0.75 – 120 fps
ARRIRAW 0.75 – 120 fps
ProRes 2K 0.75 – 48 fps
ARRIRAW 0.75 – 90 fps
Open Gate
ARRIRAW 0.75 – 75 fps
Note: some limitations based on recording media or codec settings apply.
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
Built-in Internal Filter Module (IFM-1) filter holder. Accepts one of eight Full Spectrum Neutral Density (FSND) filters, manual insertion/removal. Permanent filters in front of the sensor: optical low pass, UV, IR
Exposure 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 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 19 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. 90 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 XT body with XR Module: 6.6 kg/14.5 lbs.
ALEXA XT body with XR Module, electronic viewfinder and handle: 8.0 kg/17.6 lbs.
Dimensions
Length: 332 mm/12.95”, width: 161 mm/6.33”, 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 with LDS contacts, 54 mm stainless steel PL mount, Super 35 centered. 52.00 mm nominal flange focal depth without FSND filters.
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 anamorphic de-squeeze. 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 Recording
Recording Uncompressed and unencrypted ARRIRAW, compressed and unencrypted QuickTime/ProRes or compressed and unencrypted MXF/DNxHD recording onto XR Capture Drives. With SxS Adapter: QuickTime/ProRes or MXF/DNxHD onto SxS PRO cards. With CFast 2.0 Adapter: QuickTime/ProRes or MXF/DNxHD onto CFast 2.0 cards. All formats include embedded audio, timecode and metadata. ARRIRAW can additionally store an ASC Color Decision List (CDL) from an on-set network connection.
For more details,click here
Recording Outputs
2x 1.5G or 3G REC OUT BNC connectors for uncompressed 1920 x 1080 4:4:4 RGB or 4:2:2 YCbCr HD video 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. Embedded audio, time code, metadata and recording flag. ALEXA XT models do not offer ARRIRAW T-Link output.
Monitor Output
1x MON OUT BNC connector for uncompressed 1.5 G HD-SDI video: 1920 x 1080 (16:9), 4:2:2 YCbCr; legal range HD video at 23.976, 24, 25, 29.97, or 30 fps. Embedded audio, time code, metadata and recording flag.
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 ARRIRAW, ProRes or DNxHD (1) from XR Capture Drive or playback of ProRes or DNxHD (1) from SxS PRO card 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 (1) 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
1x media slot for XR Capture Dive or SxS adapter
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. 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 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 can be exchanged for future storage modules. The Electronics Interface Module (basic and Plus version) can be exchanged for future control electronics. 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 (included), High Speed (included) and DNxHD.
(1) Frame grabs are not possible during High Speed, 16:9 2K, 4:3 2K, Open Gate or when the option ‘REC OUT = MON OUT Clone’ is chosen.
Note: Technical data based on Software Update Packet SUP 9.1 (ALEXA XT/XR). 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

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