NA-A7C for Sony A7C Camera

Sony’s latest full frame mirrorless camera, the a7C offers the underwater image maker one of the most compact and travel friendly full frame systems available on the market today. The a7C features Sony’s latest stellar autofocus and a much improved battery life thanks to its use of the larger Z series battery. The BIONZ X processor delivers superb low-light performance and faster image processing. For video shooters, the a7C features internal UHD 4K capture in the wide-dynamic range HLG image profile at up to 30p.

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Technical Specifications

Dimensions	307mm (W) x 172mm (H) x 103mm(D)
Weight (in air)	1.78kg
Weight (in water w/ camera)	0.19kg
Depth Rating	100m
Port Opening	N100

Introducing NA-A7C

The Sony a7C Full Frame Camera

The 24MP Sony a7C is Sony’s newest and smallest full frame camera. It resembles a body size closer to the APS-C sensor Sony a6600, yet offers the same hybrid, real-time tracking autofocus system as the higher-end alpha models from Sony.  It offers 5-axis image stabilization and can shoot bursts up to 10fps with auto focus.  

Key Camera Specs

• 24MP BSI CMOS full frame sensor
• “Real-time tracking” AF System
• Oversampled 4K video up to 30p (1.2x crop), including 8-bit S-Log and HLG
• Continuous shooting up 10fps
• 3.0″ 921.6k-Dot Vari-Angle Touchscreen
• 2.36m-Dot OLED Electronic Viewfinder
• 5-Axis In-Body Image Stabilization
• Large ‘Z-type’ battery, rated to 740 shots per charge

While the a7C shares a great deal in common with the a7 III, the biggest standout difference is the size. According to Sony, the a7C is the world’s smallest full frame interchangeable lens camera with in body stabilization. Not only is it much smaller, but the a7C also gained Sony’s latest auto focus technology making this a clear competitor in the compact mirrorless market.  Along with the a7C, Sony also introduced the compact FE 28-60mm f/4-5.6 lens which is fully compatible with both the Nauticam WWL-1B and WACP-1.  

The Nauticam NA-A7C Underwater Housing

Nauticam is the industry leader in mirrorless interchangeable lens underwater camera support. Nauticam has housed more mirrorless cameras, and more Sony E Mount cameras than any other housing manufacturer. This experience results in the most evolved housing line with broadest range of accessories available today.

Pioneering optical accessories elevate performance to a new level. Magnifying viewfinders, the sharpest super macro accessory lenses ever made, and now the highest quality water contact wide angle lenses (the WWL-1B and WACP-1) combine with the NA-A7C housing to form a complete imaging system.

Nauticam is known for ergonomics, and an unmatched experience. Key controls are placed at the photographer’s fingertips. 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.

NA-A7C features an integrated handle system. This ergonomic style provides exceptional control access, even with thick gloves, with ideal placement of the shutter release and a thumb-lever to actuate the AF-ON button from the right handle.

Nauticam build quality is well known by underwater photographers around the globe. The housing is machined from a solid block of aluminum, then hard anodized making it impervious to salt water corrosion. Marine grade stainless and plastic parts complete the housing, and it is backed by a two year warranty against manufacturing defects.

Premium Optics

Several in-house Nauticam optical designs, designed by founder and Managing Director Edward Lai, are the perfect lenses to pair with an a7C underwater system. The magic of the water contact lenses is their tremendous versatility, paired with outstanding in-water performance. Both macro and super wide angle optics are available to the underwater photographer on the same dive. These lenses are completely engineered for use in water, providing the highest image quality available today in a water contact optic.  While there are many options, we’ll focus on the most compact and versatile setup to match the travel friendly size of the a7C.  

WWL-1B is a wide angle conversion lens, compatible with the Sony FE 28-60mm f/4-5.6 lens, providing 130 degree diagonal field of view with full zoom through! The WWL-1 offers class leading center sharpness, corner sharpness, and contrast resulting in some of the best wide angle images possible underwater.

CMC-1 and CMC-2 provide the best macro performance for the Sony FE 28-60mm f/4-5.6 lens, with two different magnification strengths, suitable for a wide variety of macro subjects.  CMC-2 is less strong, making it easier to use with more accurate autofocus. CMC-1 is best suited for the smallest of macro subjects. Macro enthusiasts will surely want both!

Fast and Reliable Flash Triggering

Reliable rapid fire manual flash triggering is available with the NA-A7C for a variety of optically fired flashes when used with the LED Flash Trigger (26302). The NA-A7C comes fiber optic ready and accepts the Universal Fiber Optic Cable (26216).

Strobes and light arms can be attached to the housing via included 1″ accessory mounting balls. 

Electrical strobe triggering is still an option for those with an investment in legacy lighting gear, requiring the purchase of an accessory electrical bulkhead (25056).

Integrated Vacuum Check and Leak Detection System

The Nauticam vacuum check and leak detection system is available with NA-A7C as standard equipment. Combined with an optional vacuum valve (PN 25624), this monitoring system provides constant updates on the water tight and safe-to-dive status of the housing. A simple 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.

Resources

NA-A7C PDF Manual Download

In The Box

• NA-A7C Housing
• 1x 90139 Spare Main O-ring , O-ring remover and lubricant
• Housing Cap
• CR-2032 Battery (for Moisture Alarm)
• Set of Allen Keys
• Padded housing bag and shoulder strap
• 2x Stainless Steel Handle Brackets
• 2x Handles with mounting balls

Accessories

• 25624 M14 Vacuum Valve II (Pushbutton Release)
• 25226 20cm lanyard with shackles
• 32204  Nauticam 180˚ straight viewfinder
• 32205  Nauticam 45˚ viewfinder
• 26302 Mini Flash Trigger for Sony
• 26216  Universal Optical Fiber Cable
• 25081  M24-M16 Step Down Adaptor (required to use Nikonos 5-pin Bulkhead)
• 25056 M14 Nikonos 5-pin Bulkhead with Universal Hotshoe Connection (X and Ground Connection Only)
• 25226  20cm lanyard with shackles
• 25412 23cm lanyard with 2 snap hooks

HDMI Recommended Configurations

Monitor Options

• 17906 NA-502H Housing for SmallHD 502 Monitor
• 17920 NA-502B-H Housing for SmallHD 502 Bright Monitor 
• 17923 NA-Shinobi-H Housing for Atomos Shinobi 5.2″ 4K HDMI Monitor with

  HDMI 1.4 input

For HDMI 2.0 Cable System

• 25086 M24 adaptor for HDMI 2.0 cable
• 25098 M24D3R140-M28A1R170 HDMI 2.0 Cable (for NA-A7C to use with Ninja V housing)
• 17922 Nauticam Atomos Ninja V Housing for Atomos Ninja V 5″ 4Kp60 4:2:2 10-bit Reorder/Monitor/Player (excl. HDMI 2.0 cable)

For HDMI 1.4 Cable System

• 25033 Standard HDMI Cable with M16 Thread
• 25081 M24-M16 Step Down Adaptor
• 25076 HDMI (D-D) 1.4 Cable in 200mm Length for NA-XT2/XH1/A6400/R5/A7C  (for internal connection from HDMI bulkhead to camera)
• *25033 is included in monitor housing