NA-A1 Technical Specifications

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Sony A1 Key Specifications

• 50.1MP Exmor RS BSI CMOS full-frame sensor
• 759 point Fast Hybrid AF with tracking
• 30 fps burst shooting with electronic shutter
• 9.44M dot OLED viewfinder with 240fps refresh rate
• 8K 30p and 4K 120p video in 10-bit
• 4.3K 16-bit Raw video output
• Dual UHS-II / CFexpress Type A card slots

The Nauticam NA-A1 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 NA-α1 underwater housing provides fingertip access to all key camera controls in a rugged and reliable aluminum underwater housing. Ergonomic camera control access is one of the defining strengths of a Nauticam housing, and the NA-α1 continues this tradition.

Integrated DSLR-housing styled handles with ergonomic rubberized grips and stainless steel stiffening brackets add stability and accessory mounting points. The NA-α1 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 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-α1 has both an 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.

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 transmitted via the optical cables to compatible strobes.

Resources

What's In The Box:

• NA-α1 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
• Padded housing bag and shoulder strap

Recommended Accessories:

•  Conversion Kit to Convert NA-α1 for use with Sony A7SIII Camera
• M14 Vacuum Valve II (Pushbutton Release)
• Nauticam 180˚ straight viewfinder
• Nauticam 45˚ viewfinder
• Mini Flash Trigger for Sony (compatible with NA-A7/A7II/A9) – compatible with YS-D2
• Universal Optical Fiber Cable
• Hand Strap for 28113 (For NA-1DXII/D500/D5/80D/A9)
• Mounting Ball Set for Tripod (for NA-A9/A7RIII/BMPCC/XT3)
• Nikonos adaptor for NA-A7II/A9/A7RIII/A7RIV/a2020
• M24-M16 Step Down Adaptor
• M14 Nikonos 5-pin bulkhead with universal hotshoe connection

HDMI Output Accessories

For HDMI 2.0

• M24 adaptor for HDMI 2.0 cable (incl. tightening tool)
• 25099 M24A2R200-M28A1R170 HDMI 2.0 Cable (for NA-α1 to use with Ninja V housing)

Monitor housing:

•  Nauticam Atomos Ninja V Housing for Atomos Ninja V 5” 4Kp60 4:2:2 10-bit Reorder/Monitor/Player (excl. HDMI 2.0 cable
•  Nauticam Atomos Ninja V-S Housing for Atomos Ninja V 5” 4Kp60 4:2:2 10-bit Reorder/Monitor/Player (excl. HDMI 2.0 cable) with Atomos AtomX SDI Module

For HDMI 1.4

• M24-M16 Step Down Adaptor
• 25100 HDMI (D-A) cable in 190mm length for NA-a1 (for connection from HDMI bulkhead to camera)
• standard HDMI bulkhead with M16 thread

Monitor housing:

•  NA-502B-H Housing for SmallHD 502 Bright Monitor
•  NA-Shinobi-H Housing for Atomos Shinobi 5.2" 4K HDMI Monitor with

  HDMI 1.4 input