Can the Sony PXW-FX9 shoot 4K at 120fps?

The Sony PXW-FX9 supports high frame rates in S&Q mode, but 4K/120fps is not supported. It can record up to 120fps in 1920x1080 resolution when the imager scan mode is set to FF 2K or S35 2K.

What memory cards does the Sony PXW-FX9 use?

The Sony PXW-FX9 uses XQD memory cards for primary video recording. It also features a UTILITY SD/MS card slot used for proxy recording, saving/loading settings, and software updates.

Does the Sony PXW-FX9 have built-in ND filters?

Yes, the Sony PXW-FX9 features an internal variable ND filter system. It can be set to preset values (1/4, 1/16, 1/64) or used in variable mode to adjust transmittance linearly from 1/4ND to 1/128ND.

Can I use A-mount lenses on the Sony PXW-FX9?

Yes, you can use A-mount lenses by attaching an optional lens mount adaptor (such as the LA-EA3 or LA-EA4). Note that when using A-mount lenses, the iris is set manually and focus is set to MF.

How do I update the firmware on the Sony PXW-FX9?

Firmware updates are performed by setting the camcorder to mass storage mode and following the procedure supplied with the update software. You can check the current version in the Maintenance > Version menu.

What is the maximum clip duration on the Sony PXW-FX9?

The maximum duration for a single continuous recording is 6 hours. If the recording time exceeds this, a new clip is created automatically.

Does the Sony PXW-FX9 support simultaneous recording to two cards?

Yes, the Sony PXW-FX9 supports 2-slot simultaneous recording (Simul Rec). This can be enabled in the Project menu, though it is not supported in S&Q Motion or Picture Cache Rec modes.

Can I power the Sony PXW-FX9 via the XDCA-FX9 extension unit?

Yes, when the XDCA-FX9 is attached, you can attach a V-shoe battery or connect an external power supply to the extension unit. The standard camcorder battery pack cannot be attached when the extension unit is in use.

Sony

FX9

Name: Sony FX9
Brand: Sony
Price: 10999 USD
Availability: InStock

A full-frame cinema camera, it features a 6K Exmor R sensor that can capture stunning 4K imagery with over 15 stops of dynamic range. Designed for documentary, corporate, and event production, its standout feature is the Dual Base ISO and electronic variable ND filter, offering exceptional flexibility in various lighting conditions.

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Technical specifications

Sensor: Full-Frame CMOS
Sensor Size: 35.7 x 18.8 mm
Mount: Sony E
Max Resolution: 4096 x 2160
Max Frame Rate: 120 fps
Codec: XAVC-I, XAVC-L, MPEG HD422
Dynamic Range: 15 Stops
ISO Range: ISO 800–102400
Log / Gamma: HDR-HLG, S Cinetone, Sony S-Log 3, Standard

Autofocus: Fast Hybrid AF
Stabilization: Supplies Stabilization Metadata
ND Filter: 2–6 stop (3-position wheel)
Ports: 1x BNC (12G-SDI), 1x BNC (3G-SDI), 1x HDMI 2.0, 2x XLR 3-Pin Mic/Line (+48 V Phantom Power), 1x 1/8" / 3.5 mm TRS Stereo Headphone, 1x Barrel (18 to 20.5VDC), 1x BNC (Genlock) Data, 1x BNC (Timecode) Data Input/Output, 1x 2.5 mm Sub-Mini (LANC) Control, 1x Micro-USB (USB 3.2 / 3.1 Gen 1) Data
Battery: Sony BP-U Series
Weight: 4800g
Dimensions: 146 x 142.5 x 229 mm
MSRP: $10,999

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Field guide

Overview

The Sony PXW-FX9 is a powerhouse full-frame camcorder that sits at the intersection of cinema-style production and broadcast-ready reliability. Designed for cinematographers who need the shallow depth-of-field and high dynamic range of a full-frame sensor without sacrificing the ergonomic, run-and-gun features of a traditional ENG camera, the FX9 is a direct competitor to high-end cinema cameras in the documentary and corporate space. It is a versatile workhorse that bridges the gap between the FS7 legacy and modern full-frame aesthetics.

What sets the FX9 apart is its sophisticated sensor and autofocus system. It features a 35mm full-frame CMOS sensor capable of 15+ stops of dynamic range, paired with a hybrid autofocus system that combines phase detection and contrast AF for high-speed, high-accuracy tracking. The manual reveals a deep level of control, including dual base ISO settings, a variable ND filter system that allows for seamless exposure adjustments without changing aperture or shutter speed, and extensive network capabilities for file transfer and remote control.

This camera is an ideal choice for documentary filmmakers, interview-based productions, and corporate videographers who require a reliable, all-in-one solution. Its modular design, which supports the XDCA-FX9 extension unit, makes it equally capable for multi-camera broadcast setups or solo-operator field work where speed and image quality are paramount.

Pros & Cons

Pros

Full-frame 35mm sensor provides a cinematic look with 15+ stops of dynamic range, offering significant latitude for color grading.
Built-in variable ND filter (1/4ND to 1/128ND) allows for precise exposure control without affecting depth of field, essential for run-and-gun shooting.
Hybrid autofocus system with phase detection and face tracking provides reliable performance, even for solo operators.
Dual base ISO settings (ISO 800/4000 in Cine EI mode) provide excellent low-light performance without excessive noise.
Extensive network connectivity, including LAN and Wi-Fi, supports file transfer and remote control via the Content Browser Mobile app.

Cons

4K/HD sub-recording and other special modes like S&Q Motion are mutually exclusive, limiting the ability to record proxies or high frame rates simultaneously.
The camera requires a specific, proprietary XDCA-FX9 extension unit for advanced features like V-shoe battery support and wired LAN, increasing the total cost and weight.
The internal cooling fan, while necessary, can be a point of failure; if it stops, the camera must be powered down to prevent overheating.
The menu system is deep and complex, requiring significant time to master for quick on-set adjustments.
The camera does not support the digital audio interface of the XLR-K3M, limiting the integration of some newer Sony audio accessories.

Best Settings

Narrative Filmmaking

Shooting Mode: Cine EI
Base ISO: 800 (for normal light) or 4000 (for low light)
Codec: XAVC-I
Gamma: S-Log3
Monitor LUT: S-Log3 to 709(800%) for monitoring
Why: Cine EI mode provides the most latitude for post-production color grading and ensures the sensor is used at its optimal dynamic range.

Documentary / Run-and-Gun

Shooting Mode: Custom
Base Sensitivity: Low (for normal light) or High (for low light)
Codec: XAVC-L
Autofocus: Face Priority AF
ND Filter: Variable (Auto)
Why: Custom mode allows for quick adjustments on the fly, and the variable ND filter ensures consistent exposure without needing to stop down the lens.

Interview & Talking Head

Shooting Mode: Custom
White Balance: Preset (5600K or 3200K)
Audio: Manual level control (CH1/CH2)
Focus: Flexible Spot (AF)
Why: Manual audio control is critical for clean dialogue, and Flexible Spot AF ensures the subject's eyes remain sharp throughout the interview.

Slow Motion

Shooting Mode: Custom
S&Q Motion: On
Frame Rate: 60fps or 120fps (depending on resolution)
Note: Audio is not recorded in S&Q mode, and autofocus/auto-iris are disabled.

Common Issues

Recording Fails to Start

What's happening: Pressing the record button does not trigger recording.
Why: The XQD card may be full, or the card requires restoration due to a previous error.
Fix: Check the remaining capacity in the viewfinder. If the card needs restoration, follow the on-screen prompt to restore it via the TC/Media menu.
Prevention: Regularly check media capacity and format cards using the camera's internal formatting tool before important shoots.

Audio Distortion or High Noise

What's happening: Recorded audio is either distorted or has a high noise floor.
Why: The audio input levels are set incorrectly (too high or too low).
Fix: Adjust the physical AUDIO LEVEL dials on the side of the camera. Ensure the input reference levels (INPUT MIC Reference) are correctly matched to your microphone.
Prevention: Always perform a sound check and monitor levels using headphones during the shoot.

ND Filter Stuck

What's happening: The ND filter does not move when the switch is toggled.
Why: Mechanical failure or obstruction.
Fix: Use the manual override procedure: remove the round cap on the bottom, insert a 2.4mm screwdriver, and turn counterclockwise to move the filter to the Clear position.
Prevention: Do not use the manual override during normal operation; consult a Sony service center if the filter fails repeatedly.

Camera Won't Power On

What's happening: The camera fails to turn on when the power switch is toggled.
Why: Battery is exhausted or not properly seated.
Fix: Ensure the battery is locked into the attachment. If using AC power, check the connection to the DC IN connector.
Prevention: Always charge batteries fully before use and ensure the power switch is in the 'Off' position before connecting power sources.

FAQ

Can the Sony PXW-FX9 shoot 4K at 120fps?: The Sony PXW-FX9 supports high frame rates in S&Q mode, but 4K/120fps is not supported. It can record up to 120fps in 1920x1080 resolution when the imager scan mode is set to FF 2K or S35 2K.
What memory cards does the Sony PXW-FX9 use?: The Sony PXW-FX9 uses XQD memory cards for primary video recording. It also features a UTILITY SD/MS card slot used for proxy recording, saving/loading settings, and software updates.
Does the Sony PXW-FX9 have built-in ND filters?: Yes, the Sony PXW-FX9 features an internal variable ND filter system. It can be set to preset values (1/4, 1/16, 1/64) or used in variable mode to adjust transmittance linearly from 1/4ND to 1/128ND.
Can I use A-mount lenses on the Sony PXW-FX9?: Yes, you can use A-mount lenses by attaching an optional lens mount adaptor (such as the LA-EA3 or LA-EA4). Note that when using A-mount lenses, the iris is set manually and focus is set to MF.
How do I update the firmware on the Sony PXW-FX9?: Firmware updates are performed by setting the camcorder to mass storage mode and following the procedure supplied with the update software. You can check the current version in the Maintenance > Version menu.
What is the maximum clip duration on the Sony PXW-FX9?: The maximum duration for a single continuous recording is 6 hours. If the recording time exceeds this, a new clip is created automatically.
Does the Sony PXW-FX9 support simultaneous recording to two cards?: Yes, the Sony PXW-FX9 supports 2-slot simultaneous recording (Simul Rec). This can be enabled in the Project menu, though it is not supported in S&Q Motion or Picture Cache Rec modes.
Can I power the Sony PXW-FX9 via the XDCA-FX9 extension unit?: Yes, when the XDCA-FX9 is attached, you can attach a V-shoe battery or connect an external power supply to the extension unit. The standard camcorder battery pack cannot be attached when the extension unit is in use.