ARRI Alexa SXT Studio Camera Body (LDS PL)

ARRI Alexa SXT Studio Camera Body (LDS PL)

ARRI Alexa SXT Studio Camera Body (LDS PL)

B&H # ARK1.0006987 MFR # K1.0006987
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Expected availability: 2-4 weeks

Product Highlights

  • 35mm ARRI ALEV III CMOS Sensor
  • Adjustable, Rotating Mirror Shutter
  • 4K UHD 3840 x 2160 (Up-Sampled 3.2K)
  • Multiple 4/2.8/2.6/2K Anamorphic Modes
  • Built-In Remote Camera & Lens Control
  • 4 x Monitor Outs, 3 x RS/Accessory Ports
  • Wide Color Gamut, Rec 2020 Compatibility
  • Array of ARRIRAW & ProRes Capture Modes
  • Motorized 1.3 Internal ND Filter
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ARRI ALEXA SXT Studio overview

  • 1Description

Enjoy truly cinematic capture using the rotating mirror shutter, and optical viewfinder (available separately) of the ARRI ALEXA SXT Studio Camera Body (LDS PL). This digital cinema camera features also features the built-in, wireless camera and lens control, tilt and roll sensors, fourth monitor-out port, and third RS/accessory connector of the ALEXA SXT Plus. Record in UHD 4K, Cine 4K, 2K, or HD with 16-bit processing for sharp, natural-looking images. The ALEXA SXT Studio provides an array of recording format choices in ARRIRAW and ProRes including 6:5 and 8:9 anamorphic modes (with SUP 3.0). With a base sensitivity of EI 800, and a dynamic range of 14 plus stops, your footage is effectively future-proofed for compatibility with HDR displays. The ALEXA SXT Studio's Wide Color Gamut exceeds current display standards, and is compatible with the Rec 2020 color space. Full-image frame rates of up to 120 fps enable capture for higher-clarity HFR (High Frame Rate) projects.

With a range from 11.2 to 180°, the ALEXA SXT Studio's rotating mirror shutter can be adjusted (along with your frame rate) to create staccato-sharp, or smoothly blurred effects. When used at its standard 180° opening, this shutter produces natural-looking movement without the artifacts sometimes found with electronic rolling shutters.

The separately available OVF-1 optical viewfinder provides comfortable, real-time, delay-free, through-the-lens viewing. The lack of motion blur enables accurate focus judging, and the image is viewable even when the camera is powered down, adding convenience during pre-lights, blocking, and rehearsals. The separately available EVF-1 electronic viewfinder can also be used with the ALEXA SXT Studio (requires an EVA-1 adapter).

The SXT Studio saves time on set, and weight on your rig by enabling you to plug lens motors directly into the camera, no motor control box is needed. The SXT Studio is compatible with ARRI controllers like the WCU-4, as well as with the cmotion hand units. The built-in tilt and roll sensors are viewed as an electronic horizon in the EVF by the operator, and the information is stored in your recording metadata for VFX and shot-matching uses.The ALEXA SXT Studio's improved image-processing system includes the ability to "bake-in" 3D LUTs at capture, a mild noise reduction feature (ANR), and a pixel correction function. ARRIRAW recording is optimized for VFX and archival capture, with uncompressed data available for sculpting with today and tomorrow's latest post-production processing. The look management architecture has been updated with the new ARRI Color Tool (ACT) and ARRI Look File (ALF-2), offering the ability to maintain your look from prep to post with on-set grading. Look files are stored in your recordings' metadata, enabling the automatic application of your on-set look to dailies, proxies, and editing files using popular NLE systems.

User-friendly features include the ability to apply customized settings to each of the ALEXA SXT Studio's outputs (EVF and four monitor outs), enabling the director, DP, DIT, or A.C. to see just the on-screen information they need, in SDR or HDR, in the color space of their choice. Standard and high-speed recording rates are now accessible in the same mode, eliminating the need to switch to a high-speed mode.

The modular ALEXA SXT family includes the flexibility of recording to the current or future media of your choice for each of your projects. Capture options include XR, and SXR capture drives with write speeds of up to 20 Gb/s, SxS PRO and SxS PRO+ cards, and CFast 2.0 cards. Faster in-camera processing speeds, and capture to SXR drives boost the ALEXA SXT Studio's maximum frame rates. RAID 1 (mirroring) capture provides additional data security for ALEXA SXT ProRes files.

The ARRI LDS (lens data system), a motorized, internal 1.3 ND filter, shoulder mount, and 15mm LWS rod support are built into the ALEXA SXT Studio. A 5-pin XLR connector supports 2-channel, 24-bit, 48kHz audio. Choose from separately available Gold or V-mount battery plates, or an AC power supply to power the camera.

Note: A viewfinder, and recording media adapter are not included with the SXT Plus body, and must be ordered separately.

Excellent Image Quality & High Dynamic Range
  • The ALEXA SXT family combines the powerful image processing of the ALEXA 65 with the familiar design of the original ALEXA user interface, producing sharp, natural-looking footage.
  • A base sensitivity of EI 800 with a dynamic range of 14 plus stops effectively future-proofs your output for compatibility with HDR displays.
  • The ALEXA SXT records in a WCG (Wide Color Gamut) exceeding current displays, and compatible with the Rec 2020 color space.
  • Record up to 120 fps for compatibility with HFR (High Frame Rate) display outputs.
SXT Studio Features
  • A rotating, adjustable mirrored shutter gives motion a film-like look without the artifacts of a rolling shutter
  • The separately available optical viewfinder provides real-time, power-free viewing with natural motion
  • Wireless or wired remote lens and camera control
  • Plug-and-play with ARRI Electronic Control System (ECS)
  • Compatible with cmotion cvolution lens control systems
  • Integrated tilt and roll sensors with an EVF-viewable horizon, and stored position metadata
  • Additional (fourth) monitor output (1.5G HD-SDI), and third RS accessory port
Wide Array of Recording Formats
  • Choose from 14 in-camera recording formats, all of which are available in both full-fledged ARRIRAW, and smaller file ProRes options.
  • Format options include 16:9 ProRes 4K UHD, Open Gate ProRes 4K Cine, economical 6:5 ProRes 2K Anamorphic and 6:5 ProRes 4K Cine Anamorphic, the VFX-friendly 4:3 ProRes 2.8K, the high-res Open Gate ProRes 3.4K, and the versatile 16:9 ARRIRAW 3.2K.
Anamorphic Solutions
  • The ALEXA's tall sensor is sized almost exactly the same as 35mm film, enabling anamorphic lenses to maintain their native fields of view.
  • The ALEXA SXT Studio's efficient 6:5 sensor mode is equivalent to 1.194:1 image area, the same as half of the classic 2.39:1 CinemaScope aspect ratio. Use this mode to capture only the image area needed for a 2.39 output, with higher frame rates, higher ProRes resolutions, and fewer steps in post than the earlier 4:3 mode.
  • ALF-2 files are stored in your recording's metadata, enabling your dailies and proxy editing files to display the same look as your master files. Supported systems include DaVinci Resolve, Colorfront OSD, Codex Production Suite, Pomfort Silverstack, and Filmlight Daylight.
Consistent Look Management
  • A new ARRI Color Tool (ACT) and ARRI Look File (ALF-2) enable you to create new looks in-camera. For easy multi-camera coordination, these looks are compatible with ALEXA Mini and AMIRA cameras.
  • Lock in your look on set with the ALEXA SXT's live, on-set grading in Rec 709 or Rec 2020. Compatible third-party systems include Pomfort LiveGrade, Codex Live, Colorfront On-Set Live, Filmlight Prelight, Technicolor DP Lights, and more.
  • The same look management can be automatically applied when using NLE systems such as Avid Media Composer, Apple Final Cut Pro X and Adobe Premiere Pro.
  • Use with the adapter of your choice to record to SxS PRO or SxS PRO+ cards, CFast 2.0 cards, XR or SXR capture drives
  • Multiple control options including Ethernet-based browser control, and compatibility with the optional RCU-4 and WCU-4 control units
  • PL lens mount with LDS (lens data system)
  • A built-in motorized 1.3 ND filter reduces light hitting the sensor, but not light passing through the optical viewfinder
  • Use with separately available Gold or V-mount battery plates
  • Integrated shoulder arch, and 15mm LWS rod support
In the Box
ARRI Alexa SXT Studio Camera Body (LDS PL)
  • LDS PL Lens Mount
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    ARRI ALEXA SXT Studio specs

    Type 35 mm format CMOS
    Color Filter System Bayer pattern
    Active Photo Sites Sensor Mode 16:9
    ARRIRAW 2.8K: 2880 x 1620
    ARRIRAW 3.2K: 3168 x 1782
    16:9 ProRes HD: 2880 x 1620 down-sampled to 1920 x 1080
    16:9 ProRes 2K: 2880 x 1620 down-sampled to 2048 x 1152
    16:9 ProRes 3.2K: 3200 x 1800
    16:9 ProRes 4K UHD: 3200 x 1800 up-sampled to 3840 x 2160

    Sensor Mode 6:5
    6:5 ARRIRAW 2.6K: 2578 x 2160
    6:5 ProRes 2K Anamorphic: 2560 x 2146 down sampled to 2048 x 858
    6:5 ProRes 4K Anamorphic: 2560 x 2146 re-sampled to 4096 x 1716

    Sensor Mode 4:3
    4:3 ARRIRAW 2.8K: 2880 x 2160
    4:3 ProRes 2.8K: 2880 x 2160

    Sensor Mode Open Gate
    Open Gate ARRIRAW 3.4K: 3424 x 2202
    Open Gate ProRes 3.4K: 3424 x 2202
    Open Gate ProRes 4K Cine: 3414 x 2198 up sampled to 4096 x 2636
    Operating Modes Mirror Shutter: On or off, switching takes approximately 3 seconds
    16:9, 6:5, 4:3 or Open Gate sensor modes

    Sensor mode switching takes approximately 60 seconds; all sensor modes are available in ARRIRAW and ProRes.

    Image Processing Internal: 16-bit linear processing in full ALEXA Wide Gamut/Log C color space
    Target Output: Log C, Rec 709 or Rec 2 color spaces
    Lens Mount 54 mm stainless steel LDS PL mount, Super 35-centered
    52.00 mm nominal flange focal depth
    Frame Rates Mirror Shutter Off:
    0.75 - 120 fps

    0.75 - 96 fps

    0.75 - 96 fps

    Open Gate:
    0.75 - 90 fps

    Mirror Shutter On:
    0.75 - 60 fps

    0.75 - 60 fps

    0.75 - 60 fps

    Open Gate:
    0.75 - 60 fps

    All speeds are adjustable with 1/1000 fps precision; some limitations based on recording media or recording format apply.

    Rotating Mirror Shutter 11.2-180.0°
    Shutter Angle Precision: 1/10 °

    At some frame rates mirror shutter needs to be less than 180°

    Electronic Shutter 5-358° up to 60 fps
    5.0° to 356° above 60 fps
    Adjustable Shutter Angle: 1/10° increments
    Built-In Filters Motorized Internal Filter: 1.4 ND Optical low-pass
    Exposure Latitude 14+ stops from EI 160-3200 scyyauswbybqsetsvsyfvqwycccfyfysdtfutv

    As measured with the ARRI Dynamic Range Test Chart (DRTC).

    Exposure Index Number of Stops Above/Below 18% Gray:
    EI 160 +5.2/-9.3
    EI 200 +5.6/-8.9
    EI 400 +6.6/-7.9
    EI 800 +7.8/-6.7
    EI 1600 +8.6/-5.9
    EI 3200 +9.7/-4.8
    White Balance Modes Presets:
    3200 (tungsten)
    4300 (fluorescent)
    5600 (daylight)
    7000 (daylight cool)

    Automatic or Manual:
    2000 to 11,000 Kelvin, adjustable in 100 K steps
    Color Correction Green/Magenta Adjustable Range: -12 to +12 CC

    1 CC corresponds to 035 Kodak CC values or 1/8 Rosco values

    Sound Level <19 dBA

    While recording ProRes 4444 16:9 HD @ 24 fps, ≤ +86°F (+30°C) with a lens attached, fan mode set to Regular, measured 3' (1 m) in front of the lens.

    Audio Input 1 x 5-pin XLR for 2-channel, line level, balanced audio A/D Conversion: 24-bit, 48 kHz
    Audio Recording Uncompressed PCM Audio: ARRIRAW, ProRes, embedded in HD-SDI output

    Only available with same project/sensor speed at 23.976, 24, 25, 29.97 and 30 fps

    Headphone Output Maximum: 2.5 dBm
    Control Interface Transflective Color LCD Screen:
    3" (76.2 mm)
    400 x 240 pixels
    Shutter Mirror Park Buttons: VIEW, GATE
    Recording Codecs 16:9:
    ProRes 4K UHD/3.2K/2K/HD: 4444 XQ, 4444, 422 HQ, 422
    ARRIRAW 3.2K, 2.8K

    ProRes 4K Cine Anamorphic 4444 XQ, 4444, 422 HQ, 422
    ProRes 2K Anamorphic 4444 XQ, 4444, 422 HQ, 422
    ARRIRAW 2.6K

    ProRes 2.8K: 4444 XQ, 4444, 422 HQ, 422
    ARRIRAW 2.8K

    Open Gate:
    ProRes 4K Cine: 4444 XQ, 4444, 422 HQ, 422
    ProRes 3.4K: 4444 XQ, 4444, 422 HQ, 422
    ARRIRAW 3.4K
    Recording Media SxS PRO or SxS PRO+ cards (requires SxS Adapter 2)
    CFast 2.0 cards (requires CFast 2.0 Adapter 2)
    XR Capture Drives (requires XR Adapter)
    SXR Capture Drives (requires SXR Adapter)

    XR Capture Drive Docks require Codex Production Suite to read XR Capture Drives recorded with ALEXA SXT.

    Supported Media SXR Capture Drives 1 TB (CDX-37019)
    SXR Capture Drives 2 TB (CDX-37021)
    XR Capture Drives 512 GB (CDX-3730)
    SxS PRO cards 64 GB (SBP-64A)
    SxS PRO+ cards 64 GB (SBP-64B, SBP-64C, SBP-64D)
    SxS PRO+ cards 128 GB (SBP-128B, SBP-128C, SBP-128D, SBP-128E)
    SxS PRO+ cards 256 GB (SBP-256D, SBP-256E)
    LEXAR Professional 3600x CFast 2.0 cards 256 GB (LC256Cxxxx3600, LC256Cxxxx3600 G2)

    With SXT SUP 2.0 installed.

    Interfaces / Ports
    Connectors Media Slot: 1 x media slot
    Monitor Out 1.5G HD/SD-SDI: 4 x BNC
    Audio In: 1 x XLR, 5-pin analog
    Return/Sync In 1.5G HD-SDI: 1 x BNC
    External Accessory Interface: 1 x 16-pin LEMO
    Battery In: 1 x Fischer 2-pin, 24 V
    Remote Start/Accessory Out: 3 x 3-pin Fischer, 24 V
    Accessory Power Out: 1 x 2-pin LEMO, 12 V
    Timecode In/Out: 1 x 5-pin LEMO
    Headphone Out: 1 x TRS 3.5 mm mini stereo
    EVF: 1 x custom 16-pin LEMO
    Ethernet: 1 x custom 10-pin LEMO with 24 V power
    Lens Data Display (LDD): 1 x 5-pin Fischer
    Lens Control System (LCS): 2 x 5-pin Fischer
    CLM-2, CLM-3, CLM-4 or later FOCUS: 1 x 12-pin Fischer
    CLM-2, CLM-3, CLM-4 or later IRIS: 1 x 12-pin Fischer
    CLM-2, CLM-3, CLM-4 or later ZOOM: 1 x 12-pin Fischer SD Card: 1 x slot

    The BNC connectors may be swapped out without camera disassembly using the K5.72915.0 ALEXA Plus BNC Removal Tool.

    Power Input Inputs: BAT connector, optional battery adapter back or top
    Voltage: 0.5 to 34 VDC
    Approximate Power Draw: 90 W (with optional EVF-1)
    Power Output 12 V Connector: Limited to 12 V, up to 2.2 A

    Input below 24 V is regulated up to 24 V
    Input Above 24 V: Input voltage = output voltage
    RS and EXT Connectors: Combined are limited to 2.2 A

    ETHERNET: Limited to 1.2 A

    The maximum power draw is also limited by the power source.

    Operating Temperature -4 to 113°F (-20 to 45°C)
    Dust and Humidity 95% maximum humidity (non-condensing)
    Splash and dust–proof
    Dimensions (LxWxH) 14.3 x 7.4 x 6.4" (364 x 189 x 163 mm)
    Weight With PL Mount: 18.1 lb (8.2 kg)
    With PL Mount, OVF-1 (not incl.), Handle (not incl.): 22.7 lb (10.3 kg)

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