ARRISCAN XT

In hundreds of archives around the world reels of film, some more than a century old, lie deteriorating. ARRI’s new digitizing system, the ARRISCAN XT, can play a key part in saving those films for future generations.

It builds on the achievements of the ARRISCAN and ARRILASER, which in recent years have set industry standards for digital postproduction. In cooperation with archives and restoration specialists worldwide, ARRI has applied this range of cutting-edge technologies for digitizing and remastering old and often damaged and fragile film.
 
ARRI’s ALEXA XT sensor gives the new ARRISCAN XT the best image quality for archive film, and its scanning speed is up to 65% faster than its predecessor. Badly damaged material can be worked on using a computerized intermitted frame-by-frame transport system.

The diffuse, high-power LED illumination of the ARRISCAN XT reduces the visibility of scratches and does not produce any heat at all – essential when working with highly flammable nitrate stock.

The Wet Gate system uses a specially developed liquid to conceal scratches and dust.

Developed by ZEISS in cooperation with ARRI, the ARRISCAN XT’s optics and the variable optical magnification system make sharpness-reducing digital resizing of scans unnecessary, even when scanning unusual frame dimensions or shrunken film material.

The ARRISCAN XT takes on existing, tried and tested film restoration technology to a new level of excellence. It is fully compatible with existing ARRISCANs, meaning restorers will be able to upgrade their equipment on-site with the addition of improved software, new features, and updated hardware.

High tech innovation is the key to the development of ARRI products. ARRI’s new digitizing system, the ARRISCAN XT, can play a key part in saving archive films for future generations. The ARRISCAN XT allows for the treatment of old film with unparalleled dynamic range and resolution.

ALEXA XT CMOS Area Sensor + Optics

  • An ARRI-designed piece of high tech
  • Large 35 mm format CMOS chip
  • 2K oversampling
  • 4K oversampling, using Microscan
  • Distortion-free geometry
  • High dynamic range
  • CDS enhancement, dynamic range enhancement


The ALEXA XT dual gain CMOS area sensor guarantees the best image quality for high density archive film scanning due to its enhanced sensitivity, improved signal to noise ratio, and extended dynamic range. This produces distortion-free scans regardless of the film’s condition, and helps capture more detail from every frame of film. This is vitally important when dealing with historical film, as restorers may not get a second chance to preserve an image.

It is a basic advantage of the area sensor that the complete image is exposed simultaneously. Thus low exposure is sufficient, optical characteristics are equivalent in all directions (in transport direction and across the film from edge to edge), and it is impossible to generate geometric image deformations.

Developed by ZEISS in cooperation with ARRI, the ARRISCAN XT optics – with variable optical magnification – make sharpness-reducing digital resizing of scans unnecessary, even when scanning unusual frame dimensions or shrunken film material.

LED Illumination

  • Stable colorimetry over time
  • RGB + IR
  • No thermal stress for film
  • Closed loop regulation
  • Excellent color separation
  • Long-term stability
  • Uniform illumination via integrating sphere
  • Allows flexible dynamic range enhancement


For its light source the ARRISCAN XT uses an array of LEDs, which are characterized by low power consumption, high efficiency, excellent color separation and long-life durability. LEDs guarantee perfect image quality and low film strain due to the minimum thermal dissipation.

The most common approach in motion picture scanners is to use a traditional white light source as the illumination system, for example xenon or halogen lamps, which evenly cover the color spectrum. For color separation between red, green and blue, filters are utilized. Due to rapid deterioration, white light sources have to be changed regularly to maintain a constant illumination quality. With this approach filtering can only be done close to the sensor, so the film is exposed to unnecessary thermal stress. Any filtering that is needed decreases the efficiency level, because the filters waste a lot of light. ARRI therefore uses LED illumination - RGB plus infrared. These components are more reliable and robust than commonly used white light sources. The narrow band of light emitted by the LEDs doesn't need to be filtered, and the RGB levels can be digitally adjusted to elegantly adjust for the masks of various film stocks. The LED signal is pulsed, giving the advantage that the film is not exposed to a constant light. By turning the LEDs on and off (flashing), the ARRISCAN XT also avoids film dehydration and bleaching.

By stabilizing the LED temperature, a constant color temperature is guaranteed. Dedicated sensors measure the luminous flux and regulate every color channel separately, as and when necessary. An integrating sphere diffuses the light for a first optical scratch concealment.

An additional infrared scan allows for identification of dust and scratches, and the file produced by the infrared scan can be used for scratch removal procedures in postproduction.

Film Transport

Film Safety
The fast and pin-registered film transport of the ARRISCAN XT was developed specially for the classic ARRISCAN.

Designed and manufactured by ARRI, the transport mechanism is a precision system that ensures film safety at all times, and guarantees maximum image steadiness. The exchangeable film gate makes it very easy to switch from 35 mm to 16 mm, to Wet Gates, or the Sprocketless Transport.

The transportation unit is constantly monitored to maximize the safety of potentially irreplaceable film negatives. Benefiting from ARRI's experience in camera design, the ARRISCAN XT film transport is robust and reliable; even shrunken or seriously damaged film can be put through the mechanism in the soft archive mode, and transported with the extra care required.

The safe and cautious treatment of film is another important aspect of the ARRISCAN XT: digital motor control ensures gentle transportation, while failsafe procedures (power down), and mechanical breaks treat the film with maximum caution.

Optical Sound Digitization


The Image to Sound Tools is a unique system designed for ARRISCAN XT to decode and digitize the optical sound on films. The package of specialized software extracts the optical soundtrack, and converts it into digital audio. Scanning parameters are usually selected for the image properties, so the system is equipped with a suite of tools that improves sound quality from scans.

The system’s biggest advantage is its ability to playback audio directly from image files in real time. The audio playback, or looped playback, allows restorers to quickly set the optimum performance parameters for digitization, even when a soundtrack is damaged.

Workflow

  • Application-matched parameters
  • Resolution up to 6K
  • Speed up to 8 fps in 2K resolution
  • Optimized MTF response for high quality images
  • Linux-based
  • Script interface
  • EDL import
  • Keycode reader included
  • Fully controllable film transport speed and mechanical pins
  • Optimized high density print film scanning


The ARRISCAN XT includes a special DIAMANT-Film IR Cleaner with command-line interface for automated post-scan dust and scratch repair, and the associated software license.

With the ARRISCAN XT creative decisions are no longer taken during the scanning process, but subsequent to the scanning process.

Without tying up the scan session, the colorist can take the time to work on a color grading system to tweak and fine tune the colors.

Film Formats
35mm / 16mm
Custom resolutions and optical magnifications covering all standard aperture sizes and aspect ratios including:
- S35 aperture 2perf, 3perf and 4perf
- N35 (academy) aperture 2perf, 3perf and 4perf
- S16 / N16
Film Gates and
Aperture Dimensions
- 35 mm Archive Gate pin, aperture: 28.0 mm x 21.5 mm
- 35 mm Wet Gate pinless, aperture: 34.5 mm x 21.9 mm
- 16 mm Archive Gate pin, aperture: 14.2 mm x 9.1 mm
- 16 mm Wet Gate pin, aperture: 13.2 mm x 10.0 mm
Imaging Device Custom ARRI designed ALEXA XT dual gain CMOS area sensor with multichannel readout. Monochrome sensor with IR masking.
- Highspeed microscan system for sensor positioning
- 3K (3072 x 2160) native sensor resolution
- 6K (6144 x 4320) native resolution using microscanning
Dynamic Range - Dual gain AXT HDR mode: up to 4.0 logarithmic densities
Bit depth - True 16-bit image processing using dual gain AXT HDR mode
- True 16-bit linear file output (per color channel)
Output Resolutions - 3K native 2730 x 2074
- 6K native 5460 x 4148 using microscanning
- 2K 2048 x 1556 downsampled from 3K or 6K
- 4K 4096 x 3112 downsampled from 6K
- Variable customizable resolutions from HD up to 6K
Optical System - High precision Zeiss optics custom designed for ARRISCAN with IR focus compensation, 105mm focal length.
- Adaptor lens for 16mm
- Autofocus system and variable optical magnification
Illumination - High power LEDs (R, G, B, IR), temperature controlled
- Integration sphere providing diffuse and indirect lighting for scratch reduction and uniform illumination of the gate aperture
- Infrared for dust & scratch removal through IR-Cleaner license
Film Transport - Fully computerized intermittent frame-by-frame film transport
- Adjustable parameters for speed, ramping, film tension and pinless scanning
- Sprocket motors for primary film transport and frame positioning
- Sprocketless film transport for 35mm, electronically position controlled
- 2 Film platters, electronically position controlled
- 2 Particle Transfer Rollers (PTR)
Film Registration - Mechanical pin registration, electronically position controlled
- Optical registration and image stabilization
- Pinless scanning, electronically position controlled
Scanning Speed - 7.0 fps @ 3K, 2K resolution, AXT HDR mode *
- 2.2 fps @ 6K, 4K resolution, AXT HDR mode *
- Manually triggered frame-by-frame single step film transport
Shuttle Speed - 35 mm: variable, 0.3 m/s up to 2 m/s, automatic End-of-Reel detection
- 16 mm: variable, 0.3 m/s up to 1 m/s, automatic End-of-Reel detection
- Archive mode: Infinitely adjustable from 0.01 m/s up to 0.3 m/s
Shrinkage - Pin registration – Sprocket Mode: up to 0.4%.
- Pinless – Sprocket Mode: from 0.4% to 3.5%.
- Pinless – Sprocketless Mode: > 3.5%
Downsample Filters - Optimized filter algorithm for print film, intermediate and camera negative film
- User adjustable from crisp to soft (independent for RGB)
File Formats - TIFF 16-bit / DPX 16-bit / DPX 10-bit / Cineon 10-bit
- TIFF 8-bit (proxies only)
File Output Standards - Raw linear sensor output
- Logarithmic conversion for negative film, parameterized for color gains and base offset (Kodak Cineon Standard)
- Custom conversion output LUTs
Color calibration - Status M density, printing density, custom matrix
- ARRISCAN XT print and reversal film scanning mode
Proxies - Independent proxy file output with variable file formats, variable pixel aspect ratios and resolutions, variable frame positioning and magnification, cropping and padding
Keycode Reader - Enables display and storage of KC from 16mm and 35mm film, scanning from KC lists,
automated film calibration selection and splice detection.
Analysis Tools - Full resolution preview scan area (switchable RAW sensor signal and output file including geometry and conversion settings)
- Histogram, X/Y-line profiles, pixel prober, tonal curve and gain editor
- Live scan preview
- Live stabilization histogram
Quality Control - Fast and precise machine and film calibration routines
- Geometry calibration using custom etched high precision glass plate
- ARRI Quality Analysis (AQUAmat) software for system quality check
Workflow - GUI and script-based job management
- Customizable EDL importer
- Keycode based scanning
- Full Reel scanning
- Automatic film calibration selection
- GUI and script-based job management
- Calibration Tools
- ALE / FLEX exporter
- SQL database and XML import / export functions
User Interface
Control
- Multiple GUIs on local touch screen and external PCs via standard network connection
- Interactive job editor
- Fast and automatic grey balance and base calibration
- Archive GUI for safe and gentle film tranpsort, disabling the pin etc.
- Touchpanel: Convenient scanner control directly at the machine. 1024x768 resolution touch screen for display of GUI from host computer.
- Post jobscripts
Archive Software
Features
- Manually triggered frame-by-frame scanning
- Live preview in shuttle mode
- Pinless scanning modes with all ARRISCAN gates
- Variable winding speed
- Slower transport acceleration speed
- Reduction of film tension
- Soft transport step speeds from 200ms to 2s, adjustable on the fly
- Fixed scanning speed for wetgate operation
- Framing correction during job execution
Optical Image
Registration
- Built-In optical image stabilization based on perforation position
- Stabilization live histogram to visually control the correction process
Optical Sound
Decoding System
- Stand-alone Optical Sound Decoding System for 16mm and 35mm variable area and variable density sound tracks
- ARRI certified Hardware & Software (PC, Audio Mixer, Audio Monitors etc.)
- Real-time off-line processing and real-time audio playback from image files with on-the-fly parameter adjustment and
WAV file export.
Infrared-Cleaner - Software license providing an improved RAW IR-Channel
- Linux based ARRI version from HS-Art DustBuster+ running on Host PC
- command-line interface for automated post-scan dust & scratch repair
Sprocketless
Transport
- Scanning of non-standard and severly damaged film material
- Rubber replacement for transport sprockets and loopbuilders to accommodate repaired and badly spliced film.
Wet Gate System - Includes Wet Gate Tower for liquid handling and regulation of compressed air and vacuum
- Modification kit for ARRISCAN to mount wet gates
- Pinless 35mm and 16mm pin-registered wet gate
- Additional wet gate drying unit
Networking & File
Transfer
- Direct connection to SAN via FC (StorNext, CXFS)
- 2-port 1 GBase-T NIC onboard
- 2-port 10 GBase-T NIC with Intel® X550 controller
- 2-port 16 Gbit Fibre Channel (option)
- Direct support of ftp protocol BrightClip enabled
Host PC - Integrated industrial grade Linux workstation
- Operating system: CentOS-7
- 2x USB-3
- NVIDIA Quattro P4000 graphics card
- 24 TB (3x 8TB) SATAIII internal Raid
Remote PC OS - Windows 10 Professional
Physical
Dimensions
- Size: 120 x 70 x 180 cm (L x W x H)
- Weight: approx. 370 kg
Operating
Environment
- Air-conditioned and dust free
- Minimum size: 3m x 3m
Room
Requirements
- Constant temperature 17 - 23 °Celsius (fluctuation +/- 1°)
- 45% to 55% rel. Humidit
Electrical
Requirements
- Input voltage: 110V - 240V switchable
- Frequency: 50Hz/60Hz switchable
Power
Consumption
- Power input: 850 Watt at 230V
  * Pin registered with standard film transport setup.

  • 16 mm Archive Gate Package
    16 mm Gate with higher and wider aperture (14,2 mm x 9,1 mm) and pin registration incl. loop builders (Super16, 16 mm)
  • 16 mm Archive Gate Upgrade
    Upgrade from regular 16 mm Gate to 16 mm Archive Gate
  • Built-In Stabilization
    Software license for electronic image stabilization, when pin-registered scanning is not possible.
  • Sprocketless Set
    Sprocketless transport system including ultrasonic loop monitoring and special loopbuilders
  • Archive Package Dry
    Package containing 35 mm Archive Gate , Sprocketless Set, Built-In Stabilization
  • 16 mm Archive Package
    Package containing 16mm Archive Gate Upgrade, Built-In Stabilization
  • 16 mm and 35 mm Wet Gate System Kodika
    Complete wetgate system including 16 mm and 35 mm wetgate, modification kit for ARRISCAN and ARRI Wet Gate tower for scratch concealment scanning. For scanning with Kodika SES Liquid. Liquid to be purchased separately at supplier
  • Image to Sound Tools
    Unique system designed for ARRISCAN XT. The package of specialized software extracts the optical soundtrack, and converts it into digital audio.
  • IR Cleaner
    Software license to use the ARRISCAN XT raw infrared channel for 3rd party products, including the DIAMANT-Film-IR Cleaner dust-busting application.