Sony A9II, A7RIV - Nauticam NA-a2020 Housing (with HDMI 2.0 support) - 17427
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Sony A9II, A7RIV - Nauticam NA-a2020 Housing (with HDMI 2.0 support) - 17427

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  • Product SKU: NAU-17427
$5,852.50

NA-a2020 Housing for Sony A9II/A7RIV Camera (with HDMI 2.0 support)

Sony has been at the forefront of the mirrorless evolution, offering cameras with specifications that are truly geared towards meeting the disparate needs of today's image makers while maintaining a similar, if not almost identical form factor.  With the a7R IV, Sony introduced the highest resolution full frame mirrorless camera to date and with the a9 II it took speed image quality to another level.  Luckily, for those wishing to take their cameras underwater, the a7R IV and the a9 II have extremely similar body size and control placement.  For this reason, Nauticam is offering the NA-α2020 housing that offer full support for both cameras in the same housing without modification.

Introducing NA-α2020

The Sony a7R IV and Sony A9 II Cameras

While both the a7R IV and the a9 II feature the same size sensor and body, they are two very different cameras.  With the NA-α2020 Underwater Housing, you now can choose the right camera for the job while using the same housing, lenses and ports.  Both cameras share 5-axis in-body stabilization (IBIS) providing up to 5.5 stops of stabilization and the ability to record 4K video either from the full sensor width or a Super35 crop at up to 30p to dual UHS-II SD card slots.  

Both cameras are capable of clean HDMI video output up to UHD 4K 4:2:2 8-bit at up to 25p.

The Sony a7R IV Camera

The Sony a7R IV is the company's fourth generation, high-resolution full-frame mirrorless camera. The 61.0-megapixel full-frame Exmor R CMOS sensor combined with BIONZ X imaging engine delivers unprecedented resolution, fine gradation, and low noise. Relative to previous generations, it promises more robust build quality, refined controls, the company's latest autofocus.

The a7R IV also received a serious upgrade from a7R III to its electronic viewfinder (EVF) in a 1.6x bump in resolution to an impressive 5.76-million-dots of UXGA OLED display, the highest of any mirrorless full-frame camera.  

Sony Alpha a7R IV Key Specifications

  • 61MP BSI CMOS full-frame sensor
  • Fast Hybrid AF with tracking 
  • 10 fps burst shooting (12-bit Raw mode) with AF Tracking
  • 5.76M dot OLED viewfinder
  • 4K video from full sensor width (sub-sampled) or oversampled from Super35 crop
  • S-Log 2, S-Log 3 and 'HLG' video modes (8-bit only)

The Sony a9 II Camera

The a9 II is the flagship full-frame mirrorless camera in Sony's lineup and features a 24.2MP Exmor RS BSI CMOS sensor.  The original a9 set the bar for high speed shooting with an incredible 20fps without EVF blackout, a trait passed on to the a9 II.  It's 693 phase-detection pints cover over 93% of the sensor's surface which, combined with the BIONZ X processor leads to fast and accurate autofocus, even while tracking.  Placing only 24.2 megapixels on the sensor, the a9 II prioritizes dynamic range and excellent low-light sensitivity over resolution.  

Sony Alpha a9 II Key Specifications

  • 24.2MP BSI CMOS full-frame sensor
  • 20fps continuous shooting without EVF blackout
  • Fast Hybrid AF with Tracking
  • 3.69M dot OLED viewfinder
  • 4K video from full sensor width (sub-sampled) or oversampled from Super35 crop

The Nauticam NA-α2020 Underwater Housing

Nauticam has supported the Sony Alpha full-frame line since the original a7 with professional grade aluminum housings that offer intuitive access to all the controls and functions of the cameras.  As the cameras have evolved, so have the Nauticam housings.  The Nauticam NA-α2020 takes our commitment to the Sony full-frame mirrorless line to another level by delivering the first housing that will support both the a9 II and the a7R II with full access to all controls without modification or restriction.

Integrated DSLR-housing styled handles with ergonomic rubberized grips and stainless steel stiffening brackets add stability and accessory mounting points.  The NA-α2020 also features dual rear thumb-levers that are easily reached from the handle that access three of the most-used controls on the rear of the camera.  The right lever actuates the AF-ON and RECORD buttons while the left lever is mapped to the PLAY button.  

Atop the housing on the left side are controls specific to the a9II in the form of a MODE dial and FOCUS mode lever.  The C1, C2 buttons as well as the EV compensation dial also have direct access from the top of the housing.  The C3, which is typically assigned to control switching between the EVF and the LCD screen is easily reachable on the rear of the housing from the left handle.

Accessory Ports

The NA-α2020 has both and M24 port at the front of the housing for both HDMI 1.4 and HDMI 2.0 connectivity (see sidebar for recommendations) as well as an M14 at the rear for the optional Vacuum Valve (25624).  The housing comes with electronics pre-installed for Nauticam's Vacuum Check and Leak Detection system.  This monitoring system provides constant updates on the water tight and safe-to-dive status of the housing. A simple color coded LED lighting system lets the user know that the vacuum is solid, or that the housing is losing vacuum. Leak detection is built into the same circuit, so if there is water intrusion, an audible and visual indication will occur. The Nauticam system is temperature compensated, eliminating false alarms caused by a change in outside temperature, or from a camera heating up on an action packed dive.

Premium Professional Optics

Nauticam's wide range of ports and in-house corrective optics are the perfect compliment to the NA-α2020's inherent flexibility.  Built around the N100 Port System, the NA-α2020 supports a wide variety of Sony FE mount lenses, as well as EF mount lenses via adapters.  In addition, there are several options available to use the groundbreaking WACP and WACP-2 wide-angle corrective lenses as well as the more compact and in-water removable WWL-1.  

For example, With the Sony SEL1635GM FE 16-35mm F2.8 GM, the WACP 2 brings the original 105º field-of-view to an impressive 128º with sharper corners, an ~0" minimum focus distance and a more natural looking image than would be provided by a standard glass dome port.

Flash Triggering

Both fiber-optic and electrical strobe triggering options are available.  The Nauticam Universal Fiber Optical cables attach to the built-in bulkheads atop the housing and feature modular connections for both Sea&Sea-style bushings and INON threaded connections.  Triggering is achieved using the optional Nauticam Mini Flash Trigger for Sony (26302) which uses LEDs powered by an on-board coin-cell battery to generate a manual signal that is transmitter via the optical cables to compatible strobes.

NA-a2020 Housing for Sony A9II/A7RIV Camera (with HDMI 2.0 support)

Sony has been at the forefront of the mirrorless evolution, offering cameras with specifications that are truly geared towards meeting the disparate needs of today's image makers while maintaining a similar, if not almost identical form factor.  With the a7R IV, Sony introduced the highest resolution full frame mirrorless camera to date and with the a9 II it took speed image quality to another level.  Luckily, for those wishing to take their cameras underwater, the a7R IV and the a9 II have extremely similar body size and control placement.  For this reason, Nauticam is offering the NA-α2020 housing that offer full support for both cameras in the same housing without modification.

Introducing NA-α2020

The Sony a7R IV and Sony A9 II Cameras

While both the a7R IV and the a9 II feature the same size sensor and body, they are two very different cameras.  With the NA-α2020 Underwater Housing, you now can choose the right camera for the job while using the same housing, lenses and ports.  Both cameras share 5-axis in-body stabilization (IBIS) providing up to 5.5 stops of stabilization and the ability to record 4K video either from the full sensor width or a Super35 crop at up to 30p to dual UHS-II SD card slots.  

Both cameras are capable of clean HDMI video output up to UHD 4K 4:2:2 8-bit at up to 25p.

The Sony a7R IV Camera

The Sony a7R IV is the company's fourth generation, high-resolution full-frame mirrorless camera. The 61.0-megapixel full-frame Exmor R CMOS sensor combined with BIONZ X imaging engine delivers unprecedented resolution, fine gradation, and low noise. Relative to previous generations, it promises more robust build quality, refined controls, the company's latest autofocus.

The a7R IV also received a serious upgrade from a7R III to its electronic viewfinder (EVF) in a 1.6x bump in resolution to an impressive 5.76-million-dots of UXGA OLED display, the highest of any mirrorless full-frame camera.  

Sony Alpha a7R IV Key Specifications

  • 61MP BSI CMOS full-frame sensor
  • Fast Hybrid AF with tracking 
  • 10 fps burst shooting (12-bit Raw mode) with AF Tracking
  • 5.76M dot OLED viewfinder
  • 4K video from full sensor width (sub-sampled) or oversampled from Super35 crop
  • S-Log 2, S-Log 3 and 'HLG' video modes (8-bit only)

The Sony a9 II Camera

The a9 II is the flagship full-frame mirrorless camera in Sony's lineup and features a 24.2MP Exmor RS BSI CMOS sensor.  The original a9 set the bar for high speed shooting with an incredible 20fps without EVF blackout, a trait passed on to the a9 II.  It's 693 phase-detection pints cover over 93% of the sensor's surface which, combined with the BIONZ X processor leads to fast and accurate autofocus, even while tracking.  Placing only 24.2 megapixels on the sensor, the a9 II prioritizes dynamic range and excellent low-light sensitivity over resolution.  

Sony Alpha a9 II Key Specifications

  • 24.2MP BSI CMOS full-frame sensor
  • 20fps continuous shooting without EVF blackout
  • Fast Hybrid AF with Tracking
  • 3.69M dot OLED viewfinder
  • 4K video from full sensor width (sub-sampled) or oversampled from Super35 crop

The Nauticam NA-α2020 Underwater Housing

Nauticam has supported the Sony Alpha full-frame line since the original a7 with professional grade aluminum housings that offer intuitive access to all the controls and functions of the cameras.  As the cameras have evolved, so have the Nauticam housings.  The Nauticam NA-α2020 takes our commitment to the Sony full-frame mirrorless line to another level by delivering the first housing that will support both the a9 II and the a7R II with full access to all controls without modification or restriction.

Integrated DSLR-housing styled handles with ergonomic rubberized grips and stainless steel stiffening brackets add stability and accessory mounting points.  The NA-α2020 also features dual rear thumb-levers that are easily reached from the handle that access three of the most-used controls on the rear of the camera.  The right lever actuates the AF-ON and RECORD buttons while the left lever is mapped to the PLAY button.  

Atop the housing on the left side are controls specific to the a9II in the form of a MODE dial and FOCUS mode lever.  The C1, C2 buttons as well as the EV compensation dial also have direct access from the top of the housing.  The C3, which is typically assigned to control switching between the EVF and the LCD screen is easily reachable on the rear of the housing from the left handle.

Accessory Ports

The NA-α2020 has both and M24 port at the front of the housing for both HDMI 1.4 and HDMI 2.0 connectivity (see sidebar for recommendations) as well as an M14 at the rear for the optional Vacuum Valve (25624).  The housing comes with electronics pre-installed for Nauticam's Vacuum Check and Leak Detection system.  This monitoring system provides constant updates on the water tight and safe-to-dive status of the housing. A simple color coded LED lighting system lets the user know that the vacuum is solid, or that the housing is losing vacuum. Leak detection is built into the same circuit, so if there is water intrusion, an audible and visual indication will occur. The Nauticam system is temperature compensated, eliminating false alarms caused by a change in outside temperature, or from a camera heating up on an action packed dive.

Premium Professional Optics

Nauticam's wide range of ports and in-house corrective optics are the perfect compliment to the NA-α2020's inherent flexibility.  Built around the N100 Port System, the NA-α2020 supports a wide variety of Sony FE mount lenses, as well as EF mount lenses via adapters.  In addition, there are several options available to use the groundbreaking WACP and WACP-2 wide-angle corrective lenses as well as the more compact and in-water removable WWL-1.  

For example, With the Sony SEL1635GM FE 16-35mm F2.8 GM, the WACP 2 brings the original 105º field-of-view to an impressive 128º with sharper corners, an ~0" minimum focus distance and a more natural looking image than would be provided by a standard glass dome port.

Flash Triggering

Both fiber-optic and electrical strobe triggering options are available.  The Nauticam Universal Fiber Optical cables attach to the built-in bulkheads atop the housing and feature modular connections for both Sea&Sea-style bushings and INON threaded connections.  Triggering is achieved using the optional Nauticam Mini Flash Trigger for Sony (26302) which uses LEDs powered by an on-board coin-cell battery to generate a manual signal that is transmitter via the optical cables to compatible strobes.

  • NA-α2020 Housing
  • 90120 Spare main O-ring, O-ring remover and lubricant
  • 2x Optical bulkhead caps
  • 2x Handles with mounting balls
  • Panasonic CR-2032 Battery (for moisture alarm)
  • Set of Allen Keys
  • Manual instruction card
  • Padded housing bag and shoulder strap
  • 25624 M14 Vacuum Valve II (Pushbutton Release)
  • 32201 Nauticam 180˚ straight viewfinder
  • 32203 Nauticam 45˚ viewfinder
  • 26302 Mini Flash Trigger for Sony (compatible with NA-A7/A7II/A9) – compatible with YS-D2
  • 26216 Universal Optical Fiber Cable
  • 28130 Hand Strap for 28113 (For NA-1DXII/D500/D5/80D/A9)
  • 25218 Mounting Ball Set for Tripod (for NA-A9/A7RIII/BMPCC/XT3)
  • 37302 Nikonos adaptor for NA-A7II/A9/A7RIII/A7RIV/a2020
  • 25081 M24-M16 Step Down Adaptor
  • 25056 M14 Nikonos 5-pin bulkhead with universal hotshoe connection
HDMI Output Accessories

For HDMI 2.0

  • 25086 M24 adaptor for HDMI 2.0 cable (incl. tightening tool)
  • 25087 M24D2R200-M28A1R170 HDMI 2.0 Cable (for NA-A7RIV to use with Ninja V housing)

For HDMI 1.4

  • 25081 M24-M16 Step Down Adaptor
  • 25046 HDMI (D-D) cable in 200mm length (for internal housing connection)
  • 25033 standard HDMI bulkhead with M16 thread
 Dimensions 339mm(W) x 170mm(H) x 123mm(D)
Weight In Air 2.71kg
Weight in Water 0.63kg
Depth Rating 100m
Port Mount N100
Compatible Cameras Sony a7R IV and Sony a9 II

How long will it take for my order to arrive after I make payment?

That depends on where you live and whether we have an item in stock or not. While we do have many items in stock, we don't carry everything. If you need an item in a hurry, it's a good idea to contact us and find out if your item is in stock.

If we have it in stock, we can usually send it out as soon as we receive payment, or you can pick it up. If an item is not in stock, we'll need to order it from our suppliers, which means it can take 1-2 weeks to arrive at your door (usually closer to a week).

Sometimes delivery can take longer, if our manufacturers are out of stock, for example, but this is unusual - we let customers know as soon as possible if something like this happens.

How do you ship my orders?

We use New Zealand Post and CourierPost to ship orders. Our default is courier, though you may organise an alternative with us by contacting us directly. CourierPost aims for next day delivery nationwide between major towns and cities in the North Island. South Island delivery can take two days. If you require next-day delivery in South Island, choose the express shipping option for the South Island. If you spend over $250 get your shipping for free!

Covid-19

We hope you, your families and friends are safe and healthy during the current Covid-19 situation.

As you may know we are a small team at Sea Tech Ltd. Our team has zero close contact with people outside our bubble.

We wish to assure you, that when we begin fulfilling orders on 28 April, we will be following the government health guidelines surrounding safe operating procedures. Hygiene basics such as hand washing, coughing/sneezing protocols as well as the wearing of appropriate protective equipment such as face masks.


We are continuing to follow the regular updates to government health guidelines and initiatives regarding Covid-19.


Please do not hesitate to contact us if you wish to discuss any aspect of our delivery service via Courier Post New Zealand.

We wish you all the best during these challenging times.

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