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The Phantom Flex4K produces highly detailed 4K imaging at 1,000 fps. The CineMag recording media enhances workflow capabilities. The Flex4K has been designed specifically for professional cinema applications.

  • 938 fps at 4096 x 2304
  • Super 35mm Color Sensor:
    • ISO 250
    • Rec. EI 800 - 1000
  • 64GB or 128 GB RAM

The Phantom Flex4K delivers low noise, high resolution 4K imaging at super 35mm format. The full- size images are delivered via 9.4 Gpx throughput in the Cine Raw file format. With up to 1,000 fps in 4K the images are compatible with major color grading and video editing applications and support standard sync-sound frame rates.

Lens mount options increase the operator flexibility and are interchangeable between PL, Canon EF (with electronic control), and Nikon F. The ability to change mounts encourages shot variety and decreases workflow difficulty between shots.

The Flex4K features a complete on-camera control interface view a menu system. 100% un-tethered operation is possible through battery mounts and remote-control options.

Key Features:

  • 3G-SDI Video Outputs
    • Dual-link 4K
    • Dual-SDI support
  • Battery Mounts Available:
    • V-Lock
    • Gold mount
    • Hawk Woods Reel Power
  • On-Camera Menu System
  • Remote Control options
  • CineStation IV includes 10Gb Ethernet
  • Cine Raw file format

What’s in the box?

  • Power supply with XLR extender
  • Ethernet Cable
  • Flex4K MiniBOB
  • Sturdy Pelican Case
  • 1 license of Glue Tools Séance for Mac
*Printed Manual and PCC Software CD available upon request. 
Resolution FPS
4096 x 2304 938
4096 x 2160 1,000
2048 x 1152 1,900
1920 x 1080* 1,977
1280 x 720* 2,932

*The Flex4K records at 4096 and 2048 width only. These are cropped resolutions that do not affect changes in frame rate.
Common resolutions and frame-rates, other resolutions available.
Short Description
  • The Phantom Flex4K digital cinema camera records up to 1,000 fps at 4K resolution, provides exceptional image quality and offers production-friendly features like auxiliary power outputs and a full-featured on-camera control interface.
  • 9 Gpx/second.
  • Max speed at full resolution of 4096 x 2304 is 938 fps
  • At 4096 x 2160 max speed is 1000 fps
  • At 2048 x 1080 max speed is 1977 fps
Sensor Specifications
  • CMOS sensor
  • 4096 x 2304 pixels
  • 6.75 µm pixel size
  • 27.6 mm x 15.5 mm
  • Super-35mm; 31.7mm diagonal
  • Super-16mm format at 1920 x 1080
  • Base ISO Color 200D; 250T
  • Exposure index range 250-1250
  • Recommended EI 800-1000 Color
  • Base ISO Monochrome 800D; 2000T
  • 12-bit
  • Exposure time (shutter speed): 5μs to 1/frame rate
  • Can be set in degrees or microseconds (μs)
  • 1-millisecond progressive scan (aka rolling) shutter
  • 64 or 128GB high-speed internal RAM
  • CineMag V (2TB, 8TB), CineMag IV, CineMag IV PRO for non-volatile storage (1TB, 2TB)
Record Times
  • 5 seconds at 1000 fps, 4096 x 2160 resolution and into 64 GB of internal memory
  • 2TB CineMag IV holds 2 hours of 4K Cine raw playback at 24p
  • 2TB CineMag IV holds over 4 hours of 4K ProRes HQ playback at 30p
Special Features
  • Three main 3G HD-SDI outputs, supporting dual-link 4K video and simultaneous live monitoring / playback
  • HD-SDI can switch between Rec709 and Log
  • Supports both HD-SDI and component based viewfinders
  • Standard internal mechanical shutter for automatic/remote Current Session Reference (CSR)
  • Secondary IP address
  • Segment memory for multi-cine acquisition
  • Field-based firmware upgrade capable
  • Several mounting holes for accessories on camera body
  • Programmable trigger location (pre/post trigger recording)
  • Trigger from camera body or via software
  • Hardware trigger via Sync port
  • Trigger inputs also available on 3-pin accessory ports
Timing and Synchronization
  • Frame synchronization to internal or external clock (FSYNC)
  • Genlock sync available through HD-SDI return signal
  • IRIG in/out (modulated or unmodulated)
  • SMPTE time code support
  • 4x 3G HD-SDI output BNCs (one reserved for viewfinder)
  • 1x 3G HD-SDI return BNC, supports Genlock
  • Sync connector for Trigger, time code, F-sync, AES/EBU Audio (via MiniBob or Capture cable)
  • Remote (RCU) port
  • Component viewfinder port
  • Four Aux ports for power and trigger
  • (2x 12VDC and 2x 24V)
  • Gb Ethernet for both control and data
  • 10Gb Ethernet on CineStation IV
Camera Control
  • Phantom Camera Control (PCC)
  • On-Camera Controls
  • Remote Control Unit (RCU), connects direct to camera
  • SDK available
Video Out
  • Three main 3G HD-SDI, supports dual-link 4K video or 3x scaled 1080p outputs.
  • Additional HD-SDI reserved for viewfinder
  • Component viewfinder port
  • Video outputs switchable between Rec709 & Log
  • PL-mount standard
  • Nikon F/G mount optional
  • Canon EOS optional
Video Processing
  • Brightness
  • Gain
  • Gamma
  • Saturation
  • Color temperature
  • Color matrix
  • Tone curve
  • Log mode
  • Image flip and rotate in PCC
  • Crop & Scale
Motion Analysis
  • Basic measurements via Phantom Application:
  • Distance
  • Speed
  • Acceleration
  • Angles and Angular Speed
  • Manual and Automatic point collection for target tracking
  • Compatible with 3rd party solutions
Supported File Formats
  • Cine raw and Apple ProRes 422 HQ CineMag recording
  • PCC Cine file conversion to: Cine Compressed, Cine RAW, AVI, h.264 mp4, Apple ProRes .mov, Multipage TIFF, MXF PAL, MXF NTSC, Uncompressed QuickTime, Windows BMP, OS/2 BMP, PCX, TGA, TIFF, LEAD, JPEG, JTIF, RAW, DNG, DPX
  • 100 - 240 VAC, 280 Watt power supply included
  • Optional 26V Hawk-Woods and 12V V-Lock Anton-Bauer backs are available for battery power
Mechanical Specifications
  • Size (without lens or viewfinder): 12 x 6 x 8 in. (L x W x H); 30.5 x 35.5 x 20.3 cm.
  • Weight (without lens or viewfinder): 13 lbs; 5.9 kg
Environmental Specifications
  • Temperature: -20° - +50° C
  • Phantom SDK
Ships Standard With
  • Power supply
  • Ethernet cable
  • Phantom PCC software
  • 1 license of Mac-based Glue Tools Séance and Cine Toolkit for download and file conversion
  • Getting Started guide
  • Case
Popular Accessories
  • CineMag V
  • CineStation IV
  • Riser for Arri baseplates
  • Spare Cable Kit
  • Battery Mounts
  • Viewfinder
Pickle Switch, 6' (2m) Cable

Pickle Switch, 6' (2m) Cable

Pickle Switch. Connect to the Trigger port on camera or Capture cable, breakout box or Mini-BOB for manually triggering a camera with the press of a button.
Canon EF Mount for Flex4K cameras

Canon EF Mount

Canon EF Lens mount with electronic focus and aperture controls for EOS lenses. Control the lens from PCC.  Includes shims for backfocus and case. 
Battery mounts for Flex4K

Battery Mounts for Flex4K

Battery backs for Phantom Flex4K cameras only
V-Lock mount is manufactured by BLUESHAPE exclusively for the Phantom Flex4K, AB is a standard Gold-mount from Anton Bauer.

Field install kits include mounting plate and screws.

Accepts high-capacity 14.4V batteries
Riser for Phantom Flex, Flex4K and vXX1 Cameras

Riser for Flex, Flex4K and vXX1 Cameras

This Riser brings your Phantom camera to the correct height for standard Arri 19mm Baseplates (BP-8, BP-9), and features through holes for lightweight 15mm rods to support a wide variety of cine-style accessories.
Phantom CineStation IV

Phantom CineStation IV

Download station for CineMag IV and CineMag V recording media.  Includes Gb and 10Gb Ethernet network support standard.

Activate ProRes recording using the CineMag menu on the Flex4K or in the Flash Memory menu in PCC.  Select between Cine Raw (Packed 10) and ProRes 422 HQ as format options.

Hardware:  CineMag IV and CineMag IV-PRO mags are required for ProRes recording.  The newer CineMag V does not support this feature.

Resolution:  When working with ProRes, the camera must be set to full sensor resolution 4096 x 2304 (however - when using CMIV-PRO 2048 x 1152 is also available). ProRes files can be saved to the CineMag as 4K or scaled 2K resolution.  The CineMag IV will not support any other resolutions to record when set to ProRes.  In LOOP mode, you can still capture to RAM at other resolutions, but the recording will default to RAW when saved to the CineMag.

Frame rates and save times:  In Run/Stop (RS) mode the camera will allow up to 30 fps direct to a CineMag IV, and 120 fps with a CineMag IV-PRO.  2K ProRes recording at higher frame rates is also available on the CineMag IV-PRO.

In LOOP mode, the camera will allow up to 938 fps to RAM, before the file is saved to the CineMag.  Saving in ProRes HQ mode takes about 3 times longer to the CineMag IV than saving RAW.  CineMag IV-PRO mags are much faster, and actually the save time is equal to saving RAW.  The files in the mag are about 2.5X smaller than the un-interpolated RAW files, and take that much shorter to save from the camera or CineStation IV.  

Over 5 hours of 24 fps ProRes HQ footage can be stored on a 2TB CineMag IV.

Video playback from the camera body:  The camera body will allow for HDSDI video playback of the ProRes files, however it’s a little different than working with RAW.  The camera must load the files for playback, which takes about 5 seconds.  During this 5 second “switchover” the word “loading” is on the camera menu. This process will happen automatically each time a ProRes file is recorded into the mag or playback is initiated.

Also unique to ProRes playback are the supported video formats.  1080p, 1080psf and 4Kp video modes allow for playback at ZOOM: fit and ZOOM: 1 settings.   1080psf playback actually switches to 1080p during ProRes playback, then switches back to psf for live monitoring and RAW playback.   

Not supported are 1080i, 720p modes, anamorphic settings and larger zoom settings. 

Vision Research chose to enable ProRes 422 HQ as the initial format, based on the inherent quality and compression value when compared to Cine Raw files.  We feel that if higher quality is required, then Cine RAW is a better option.  And lower quality formats are more likely used in addition to the Cine RAW, which are better left to be converted outside of the camera.

We do not have plans to add other ProRes formats at this time.
A record time calculator can be found in the 'Support / Resources & Tools' section of our website, as well as in the "Phantom Tools" iOS App, which lets you estimate the maximum frame rate and record time at any given resolution.  With the Flex4K selected, choose the appropriate CineMag and memory size in order to simulate recording directly to that CineMag.

The most obvious difference is the pixel resolution: The original Phantom Flex (aka Flex 2K), has a 2.5K sensor and the Flex4K has a full 4K sensor. There are many other differences, which we have tried to capture here:

Recording media

The Flex (2K) uses the CineMag or CineMag II non-volatile magazines. These mount to the top of the camera.

The Flex4K is compatible with CineMag IV and V. These mount in the side camera enclosure of the Flex4K, and are not compatible with the earlier cameras. 

In both cases, Raw Cine files are transferred from RAM (or recorded directly) at speeds over 800 Mpx/second.  The CineMag IV (and CineMag IV-PRO) includes the option for ProRes recording to save space and increase total record time.

Image properties

The Flex (2K) has a maximum resolution of 2560 x 1600 on a super 35mm CMOS sensor. The pixel size is 10 microns. The Flex4K is also super-35mm but with a full resolution of 4096 x 2304 and with  6.75 micron pixels.

The dynamic range is higher, and the overall noise level of the Flex4K is significantly lower than the Flex (2K).

The base sensitivity of the Flex4K is ISO 250T, and the exposure index can extend the image up to over 1000 (ISO equivalent) without significant loss of image quality. The Flex (2K) has a base sensitivity of ISO 1000T, but we don’t recommend pushing the exposure index on that camera in order to maintain the optimum image quality.

Another difference is that the Flex4K has a progressive scan shutter (with less than 1ms scan time), and the Flex (2K) has a global shutter.

Regarding color processing, the Flex4K operates from the newer Phantom protocol, which lets you set the white balance in Kelvin as opposed to RGB gains like previous Phantom cameras.  Powerful image processing controls like tone curves and color matrix are also possible with the Flex4K.

On-camera controls

The Flex (2K) has basic controls on the left side of the camera. The camera needs to be connected to a viewfinder or monitor to see the menu and settings change.

The Flex4K has similar controls on the left side, but on the right side there is a new full menu system that lets you control every setup and control parameter of the camera. This full menu is displayed on a built-in LCD screen.

Power & battery control

The Flex (2K) has two 24-volt power inputs. One can be used as the main AC power (220 watt power supply), and the other can be connected to a stand battery to use as a battery backup. OR, power the camera with a stand battery (like the Anton Bauer VCLX series)

The Flex4K has one 24-volt power input, and three standard battery backs are available that support Hawk-Woods, V-Lock and AB-Gold mount batteries. When using 14.4 volts only high-capacity batteries are recommended.    

Video features

The Flex (2K) has two 1.5G HD-SDI outputs and one component video signal, and they all output an identical scaled 1080p or 720p output.  The two outputs can work together to provide a 4:4:4 1080p signal. 

The Flex4K has three main HDSDI outputs that can output at either 1.5G or 3G, and an additional SDI for viewfinder. Two of the outputs can be used together for a dual-link 4K signal.  The camera can be set to continuously monitor the live feed where 2 of the outputs play back what was captured to camera RAM or the CineMag IV.  The cameras outputs can also switch between Rec709 and Phantom LOG mode for monitoring purposes. 

The record time is completely dependent on the camera’s resolution, frame rate, and the size of memory that is being recorded to.  At the camera’s maximum resolution and frame rate the camera will capture 10 seconds of video to 128GB of RAM. 

Visit our Record Time Calculator.

The camera body weighs in at 14 lbs (6.3kg) and the size is 11.5 x 5. x 7.9 in (LxWxH); 29.2 x 14 x 20cm.  It is roughly the size of the original Flex.

Download the Flex4K Mechanical Drawing

We test the ISO of every Phantom camera model to the industry standard ISO 12232. We use the SAT method which we believe is the best method for determining a sensor's sensitivity. The SAT method does not use gain to boost sensitivity. When using gain to increase sensitivity, you also boost the noise level. A gain adjustment to boost sensitivity is available on all Phantom cameras using image processing tools, if increased noise can be tolerated.

Per the spec, we will often publish both a Daylight (D) and a Tungsten (T) value because the source of illumination has a significant bearing on the result, particularly with monochrome sensors. When T or D is not specified, it can be assumed that the value published is the Daylight variant.

Please note that most modern Phantom cameras include Exposure Index control, which will boost the apparent ISO through the use of pre-defined tone curves that get applied to the raw images. The exposure index (EI) range is specified by Vision Research per camera model to ensure optimal image quality throughout the range.
We do not manufacturer specialized enclosures such as underwater housings directly. There are manufacturers of underwater housings on the market compatible with Phantom cameras. Here are a few examples:

Gates has a specialized housing for the Flex4K: https://www.gateshousings.com/flex-4k/

Nauticam has an underwater housing for the Phantom VEO (all S-model VEO) https://www.nauticam.com/

Prevco is a subsea engineering consultancy and manufacturer specializing in submersible pressure vessels, instrumentation housings, junction boxes, vent plugs, pressure relief valves and other accessories, also compatible with Phantom cameras

If you supply underwater housings or know of another supplier, please let us know so we can add to this list.
Most Phantom cameras come with a fixed amount of high-speed dynamic RAM. When the camera is in the pre-trigger mode (you've pressed "Capture" in the user interface), the camera is continuously recording images into that memory. When it gets to the end of memory, it cycles back to the beginning and continues recording, constantly overwriting itself – until the camera is triggered. This behavior is called "circular buffer recording".

What you end up actually saving in memory is a function of how you've set up your trigger. It can be set so that only frames that occur after the trigger are saved (100% post trigger). In this mode, once the trigger is pressed any images already in memory are overwritten and you record until memory is full, then it stops. If you set the trigger to stop the recording (0% post trigger) and save all frames up to the time of the trigger, the camera will simply stop recording upon the trigger and all the frames in memory before the trigger will be saved. Finally, you can set the trigger anywhere in the middle, for example having 90% of the recorded movie be what happens prior to the trigger and 10% after the trigger.
Yes you can!  Information on discontinued Phantom cameras is archived. Information on most legacy products can be found in the ‘Support by Model’ section at www.phantomhighspeed.com/support
The Phantom RCU is a legacy solution for Flex, Miro and v-Series models. The Bluetooth dongle that was designed for the RCU also works with the handheld PCU from AbelCine, which is also compatible with most modern Phantom cameras. The Bluetooth dongle is needed for wireless connectivity with the RCU or PCU and connects to Phantom cameras with a “Remote port” (v-Series, UHS and Flex cameras). Note that Miro and VEO camera models do not have a ‘Remote’ port directly on the camera body. However, VEO cameras can be connected using the CAMEO VEObob accessory.
There are two third-party solutions that Vision Research recommends highly because they work for ALL Phantom cameras over their Ethernet connection:
  • The Semote handheld remote controller includes a handheld unit and camera unit to transmit the signal. This device provides a connection up to approximately 30 meters.

  • The iPhantom app works on any Apple IOS device, and connects to any Phantom camera that has a WiFi router attached to the camera. This is particularly great for VEO S-model cameras (with firmware after version 106), because those cameras include a USB port for a USB WiFi dongle available from Vision Research.

We offer hands-on training for Phantom cameras at our Wayne, New Jersey facility. The two-day class has both lecture and labs for the best learning experience. This class is targeted at applications where the cameras will be used for scientific and engineering applications.
On-site training is available.

For customers outside of North America, who prefer local training, most of our International Sales Partners offer training courses tailored to your needs.

If your application is TV or Motion Picture production, consider training courses targeted at those applications from AbelCine, or other Phantom resellers around the world who focus on the "entertainment" market.
Yes. Look in the General Support Documents page for the CE Declarations here: phantomhighspeed.com/support
Vision Research welcomes slow motion videos from our industrial users as well as our entertainment customers. Submission is easy. Send us an email (phantom@ametek.com ) that explains what you’d like to share. In the body of the email give us all the details about your shoot, equipment used, workflow and anything else you think we need to know. We will send you a permission to use form to complete. This form gives us permission to use your footage and tells us how to credit your work. Once we get the completed form, we’ll work with you to get the footage (we prefer the original cine file). Then, we’ll post your high speed video in the Gallery and on our YouTube channel. Slow motion videos in our Gallery are rotated on a weekly basis and randomly chosen for inclusion into the Gallery.
Vision Research sends out a monthly newsletter that includes product announcements, featured projects and other news. Fill out a Contact form to be added to our email list! http://www.phantomhighspeed.com/Contact-Us/Contact-Form
All Phantom v-Series cameras with the Airborne option (these are no longer shipping) are classified as ECCN 7A994.

All Phantom Miro Airborne and Miro Airborne HD cameras (these are no longer shipping) are classified as ECCN 9A991D.

Any Phantom camera with the FAST option installed (typically this gives you frame rates >= 1,000,000 fps and/or digital exposures < 1 microsecond) such as the Phantom v611, v711, VEO 710 and the Ultrahigh-speed 10, 11, and 12 Series are classified as ECCN 6A003 and are export controlled.

Cameras with ECCN 6A003 can only be exported to these countries with no license required (NLR):
Australia, Austria, Belgium, Bulgaria, Canada, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Japan, Latvia, Luxembourg, Netherlands, New Zealand, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Turkey, United Kingdom.

All other countries require an export license.

All other Phantom cameras are classified as ECCN EAR99.

Flex4K captures the Raku process

Frame rates range from 250 - 1000 fps. Footage captures the ancient pottery process of Raku, featured work created by the staff of YayClay! of Philadelphia PA

Flex4K Left

Flex 4K Left

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Flex 4K Right

Flex 4K Right

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Flex4K With Accessories

Flex 4K with Accessories

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Flex4K CineMag

Flex 4K with CineMag

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