The ARRI ALEXA is a 35 format film-style digital camera with an optical viewfinder, 4:3/16:9 switchable active sensor area, rotating mirror shutter, internal ND1.3/optical clear filter slider and built-in Lens Data System. Electronic viewfinder EVF-1 (not included) can be used instead of optical viewfinder. Can record ARRIRAW onto in-camera XR Capture Drives. Can record QuickTime ProRes 4444, ProRes 422 (HQ), ProRes 422, ProRes 422 (LT) and ProRes 422 (Proxy) files onto in-camera XR Capture Drives or SxS PRO cards (SxS Adapter required). Outputs HD-SDI on BNC connectors. Exposure through electronically controlled physical mirror shutter (0.75 - 48 fps in 4:3 mode, 0.75 - 60 fps in 16:9 mode, 11.2° - 180.0°) or electronic rolling shutter (0.75 - 60 fps, 5.0° - 358.0° or 60 - 120 fps, 5.0° - 356.0°). Real-time wireless lens control and REC support with the ARRI Wireless Remote System (WRS), built-in 3D lens synchronization and motion sensors.
Includes:
K1.71330.0 - ALEXA XT Studio camera body, XR Module, tool set and manual
K2.72034.0 - ProRes Codec Option
K2.72035.0 - QuickTime File Format Option
K2.72018.0 - SD Card
K2.72048.0 - Optical Universal Viewfinder OVF-1
K2.47081.0 - 435 8x Eyepiece
K2.72007.0 - Center Camera Handle (CCH-1)
K2.72076.0 - High Speed License Key
K2.72067.0 - Anamorphic De-squeeze License Key
K2.72094.0 - DNxHD License Key
K2.48838.0 - SxS Adapter
K0.71040.0 - XR Capture Drive Set 4x 512 GB
K2.72021.0 - ALEXA Ethernet/RJ-45 Cable (3.00m/9.8ft) KC 153-S
K2.72031.0 - ALEXA 12V Accessory Cable KC 154-SP-S
K2.72015.0 - Handle Extension Block (HEB-2)
K2.72083.0 - Shoulder Pad (SP-4)
K2.72017.0 - Leveling Block (LB-1)
Note: Docks, on-board battery adapters, any ground glasses or frameglow masks are not included and should be ordered separately.
Lens is not included in the camera set!
| Camera Type | 35 format film-style digital camera with an optical viewfinder, a 4:3/16:9 switchable active sensor area, built-in support for the ARRI Wireless Remote System and the cmotion cvolution lens control system, built-in motorized filter slider, Lens Data System and integrated shoulder arch |
| Sensor | 35 format ALEV III CMOS sensor with Dual Gain Architecture (DGA) and Bayer pattern color filter array. |
| Photo Sites 16:9 | 2880 x 1620 used for ARRIRAW 2880 x 1620 down sampled to 1920 x 1080 for HD-SDI, ProRes HD and DNxHD HD 2868 x 1612 down sampled to 2048 x 1152 for ProRes 2K |
| Photo Sites 4:3 | 2880 x 2160 used for ARRIRAW 2868 x 2150 down sampled to 2048 x 1536 for ProRes 2K For a pdf with details about the recording areas, surround views and framelines click here |
| Operating Modes | Mirror shutter on or off. Switching takes approximately 3 seconds. 16:9 or 4:3 sensor mode. Switching takes approx. 60 seconds. 4:3 output only available for ARRIRAW and ProRes 2K recording. Regular or High Speed mode. Switching takes approx. 40 seconds. High Speed mode is only available for 16:9 sensor mode. |
| Frame Rates 16:9 | Mirror shutter on: 0.75 – 60 fps mirror shutter off: 0.75 – 120 fps 60 fps max when recording 2K ProRes (16:9 and 4:3). 40 fps max when recording ProRes 4444 onto 32 GB SxS PRO cards. All speeds adjustable with 1/1000 fps precision. To record above 60 fps, the camera needs to be switched to high speed mode. |
| Frame Rates 4:3 | Mirror shutter on or off: 0.75 – 48 fps 40 fps max when recording any 4:2:2 ProRes codec onto 32 GB SxS PRO cards. 30 fps max when recording ProRes 4444 onto 32GB SxS PRO cards. All speeds adjustable with 1/1000 fps precision. |
| Shutter | Rotating mirror shutter (11.2º - 180.0º) or electronic rolling shutter (5.0º - 358.0º up to 60 fps; 5.0° to 356° above 60 fps). Shutter angle setting precision: 1/10 degree. At some frame rates mirror shutter needs to be less than 180º. |
| Filter | Sealed behind-the-lens motorized filter mechanism provides optical flat or ND 1.3 (4.3 stops). |
| 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 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. |
| 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 -8 to +8 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 (mirror shutter running on the Studio) 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 on all inputs. When running over 30 fps with mirror shutter on, voltage of 18V or more is recommended. 95 W power draw for camera and OVF-1 in typical use recording 24 fps to SxS PRO cards, mirror shutter on, without accessories. |
| 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 Studio body with XR Module: 8.3 kg/18.3 lbs. ALEXA XT Studio body with XR Module, optical viewfinder and handle: 10.5 kg/23.1 lbs. |
| Dimensions | Length: 402 mm/15.83”, width: 268 mm/10.55”, height: 241 mm/9.49” Dimensional drawings available at www.arri.com/alexa/downloads |
| Environmental | -10° C to +45° C (+14° 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. |
| Viewfinder | Bright, high contrast, optical viewfinder OVF-1 for through-the-lens viewing with low distortion, accurate color fidelity and no delay. Rotates to left and right of camera body and telescopes in/out from the camera body. Automatically keeps an upright image with an optional manual image rotation. Includes a flip in ND 0.6 contrast filter and de-squeeze optics for 2x anamorphic lenses (1.3x de-squeeze module available). Includes Basic Insert Module BIM-1 for RGB frame glow. Compatible with 8x and 10x 435 eyepieces, 435 eyepiece extensions and all ARRIFLEX and ARRICAM heated eyecups. With the optional ARRICAM Eyepiece Adapter AEA-1, the OVF-1 can accept the 8x ARRICAM Studio eyepiece or ARRICAM Studio Viewfinder Extension Medium. Not compatible with ARRICAM Studio Anamorphic Extension at all zoom settings, ARRICAM Studio Viewfinder Zoom Extension at all zoom settings and Lite Universal Eyepiece. ALEXA Studio ground glass and frameglow holder are compatible to the ARRICAM system, but only ALEXA Studio ground glasses and glow masks provide exact alignment of framelines and captured frame. Custom formats are available for order through the online glass composer at: www.arri.com/camera/ground_glass_composer.html The OVF-1 can be replaced with the ALEXA Electronic Viewfinder EVF-1 with an Electronic Viewfinder Adapter EVA-1. The EVF-1 is a high quality, low latency (≤1 frame delay) electronic color viewfinder with a 1280 x 784 F-LCOS micro display. |
| Assistive Displays | For OVF-1: Warning LEDs for REC (recording), BAT (battery low), FULL (XR Capture Drive or SxS PRO card full). For EVF-1 and MON OUT: frame lines, surround view, camera status, false color exposure check, peaking focus check, electronic horizon, compare stored image with live image, RETURN IN video and anamorphic de-squeeze. For MON OUT only: Reel & clip number. For a graphic of which false colors indicate 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. MIRROR PARK buttons: VIEW/GATE. Optional accessory RCU-4 for remote control via camera ETHERNET connector. |
| In-camera Recording | uncompressed and unencrypted ARRIRAW, compressed and unencrypted QuickTime/ProRes or compressed and unencrypted MXF/DNxHD (1) recording onto XR Capture Drives. With SxS Adapter: QuickTime/ProRes or MXF/DNxHD (1) onto SxS PRO cards. All formats include embedded audio, timecode and metadata. |
| 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 | 2x 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. Target color spaces for ProRes, DNxHD (1), REC OUT and MON OUT: Log C and 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. Automated sync of lens settings for 3D applications in Master/Slave 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) 2x BNC monitoring out HD-SDI, 1.5G (MON OUT 1 and MON OUT 2) 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) 3x 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) 1x Fischer 5-pin Lens Data Display (LDD) 2x Fischer 5-pin Lens Control System (LCS) 1x Fischer 12-pin for CLM-2, CLM-3, CLM-4 or later (IRIS) 1x Fischer 12-pin for CLM-2, CLM-3, CLM-4 or later (FOCUS) 1x Fischer 12-pin for CLM-2, CLM-3, CLM-4 or later (ZOOM) 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 custom lens tables for the Lens Data Archive (LDA). Stores captured stills from the REC OUT image path during Regular Speed (not High Speed) in TIFF (.tif, 16 bit), DPX (.dpx, 10 bit) or JPEG (.jpg, 8 bit) format. 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 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 (not available for SUP 8.0 at this time). |
| (1) DNxHD recording not possible with SUP 8.0 (ALEXA XT/XR), planned for SUP 9.0 (ALEXA XT/XR). | |
| Note: Technical data based on Software Update Packet SUP 8.0 (ALEXA XT/XR). All data subject to change without notice. |
