Nauticam Sony A6400 Underwater Housing NA-6400


Nauticam NA-6400 Underwater Housing for Sony a6400 Camera 

Nauticam build quality is well known by underwater photographers around the globe. Nauticam has housed more mirrorless cameras, and more Sony E Mount cameras than any other housing manufacturer. Port not included.

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Nauticam NA-6400 Underwater Housing for Sony a6400 Camera (17422)

The Sony a6400 is a great match for this high-quality, aluminum Nauticam NA-6400 housing. Depth rated to 300', Nauticam is known for ergonomics and great user experience. Key controls are placed at the photographer's fingertips. The housing is machined from a solid block of aluminum, then hard anodized making it impervious to salt water corrosion. The housing and accessories are light weight, and easy to assemble. The camera drops in without any control presetting, and lens port changes are effortless.

Sony's A6400 has a high-resolution 24mp sensor with a new Bionz X processor that borrows technology from the flagship A9.  The A6400 can also shoot 4K video downsampled from the full sensor area without the recording time limit of the A6300 and A6500.  Improved autofocus and faster camera response make this Sony mirrorless a standout in the APS-C mirrorless camera field.

Mission Control

The NA-A6400 features integrated ergonomic handles with stainless steel stiffening brackets that provide a solid shooting platform and attachment point for lighting accessories.  The handles can be adjusted outwards to accommodate larger hands or thick gloves.  A large dual-stage trigger is easily reached from the right handle and provides accurate actuation of autofocus and shutter release.  

A thumb lever on the right side of the housing triggers the Magnify control key which can be used to control AF/MF-AEL.  This control can be customized in-camera to lock or activate autofocus.  This back-button autofocus control is a favorite of underwater users as it separates autofocus activation from the shutter release to prevent unwanted refocusing during sequential shots or during video shooting.

A dedicated record button to trigger video recording is within easy reach of the right handle and colored red for easy identification.  Switching between the high-resolution Electronic Viewfinder (EVF) and the LCD display is accomplished with a clearly marked lever to the right of the housing's viewfinder.

The camera is securely mounted on a tray using a knurled thumb screw that attaches it to the tripod mounting hole on the camera.  The LCD can be used in an angled configuration on the tray, making it easier to see underwater and reduce the effects of glare.  The tray locks into place inside the housing, preventing it from falling out when the housing is opened and ensuring proper control alignment.

Flash Trigger

Flash triggering is handled via the A6400's pop-up on-board flash.  A lever on the top of the NA-A6400 can be used to open or close the flash inside the housing, eliminating the need to remember engaging the flash before placing the camera in the housing.  Sea&Sea-style fiber optic cable connectors are built-in to the forward facing edge of the housing above the port.

More Power

To facilitate longer usage, the NA-A6400 can be used with the optional 2500mAh battery pack (PN: 36332) that mounts securely below the camera inside the housing and connects to the camera via USB.

HDMI Output

The NA-A6400 can be used with external monitors such as the SmallHD 502B and the Nauticam NA-502B housing via the Nauticam HDMI 1.4 system.  

Premium Professional Optics and Accessories

A camera system is just that, a system, which means that access to premium optics and accessories can limit the true functionality of even a top-level camera.  Nauticam's line of water-contact optics provide true wide-angle and macro performance.  The innovative bayonet mounting system or single and dual-flip adapters make installation simple.  45º and 180º magnifying viewfinders enhance the usabliity of the camera's electronic viewfinder.


Housing Features
Depth Rating:
100m / 328ft
Construction Material :
Aluminum Alloy
Includes Moisture Alarm System:
Includes Vacuum Seal System:
Electronics pre-installed (requires vacuum valve)
Sync Cord Compatibility :
TTL Converter Installed:
Interchangable Port System:
Compatible Port System:
Cold Shoe Mount :
Includes Tray and/or Handles:
Access to All Camera Controls:
306 × 168 × 100mm / 12 x 6.6 x 3.9in
Weight- Land/Water:
1.6kg (56.4oz) / -0.33kg (-11.6oz)
External Monitor Compatibility :
Optional View Finder Accessories:
180º Straight Viewfinder (32204)45º Viewfinder (32205)
Recommended Accessories:
Battery Pack (36332)M14 Vacuum Valve (25624)M16 Vacuum Valve (25625)


  • Dimensions: 306mm (W) x 168mm (H) x 100mm (D)
  • Weight (in air): 1.6kg
  • Weight (in water): 0.33kg
  • Depth Rating: 100m
  • Port Mount: N85

What's in the box:

  • NA-A6400 Housing
  • 90133 Main O-ring, lubricant and removal tool
  • CR-2032 Battery (for moisture alarm)
  • Set of Allen Keys

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