Underwater housing Nauticam for Sony a7R IV, a9 II

With the NA-α2020 Underwater Housing, you now can choose the right camera for the job while using the same housing, lenses and ports.

What's In The Box?

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

The housing

The NA-α2020 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.

Ports and special optics

Nauticam's wide range of ports and in-house corrective optics are the perfect compliment to the NA-α1's inherent flexibility. Built around the N100 Port System, the NA-α1 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-1B.
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

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. Nauticam produces a “straight” 180º enhanced viewfinder and a 45º angled enhanced viewfinder to enhance the ease of close quarters work often associated with macro shooting. Both viewfinders have high quality optics, and allow bright viewing of the entire image.

The Nauticam vacuum check and leak detection system is shipped with NA-A7RIV as standard equipment. Combined with an accessory vacuum valve (#25624), this monitoring system provides constant updates on the water tight and safe-to-dive status of the housing.

Lens port is required

A compatible lens port is required for underwater use (sold separately). Choose the correct port components for the lens you will be shooting.

Nauticam Port charts

Recommended Accessories:

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

Specifications
Depth Rating: 100m
Weight: 2.43 kg
Dimensions: 348mm x 200mm x 118mm W x H x D
Battery for Vacuum system: CR2032