Sony Alpha a7S MkIII - Nauticam NA-A7SIII Housing 17428
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Sony Alpha a7S MkIII - Nauticam NA-A7SIII Housing 17428

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  • Product SKU: NAU-17428
$5,852.50

NA-A7SIII for Sony A7SIII Camera

17428

The long awaited Sony a7S III brings high frame-rate 4K video with incredible low-light sensitivity to the A7 full frame mirrorless lineup. The video-centric follow up to the a7S II adds internal 10-bit 4:2:2 4K capture at up to 120fps while building on the a7S II's already segment leading low-light capabilities. Upgrades also extend to the 9.44M dot OLED viewfinder, 759-point phase detection autofocus and reduced rolling shutter.

Technical Specifications

 Dimensions 339mm(W) x 170mm(H) x 125mm(D)
Weight in air 2.7kg
Weight in water 0.56kg (incl. camera and battery)
Depth Rating 100m
Compatible Cameras Sony a7S III

Introducing NA-A7SIII

The Sony Alpha a7S III Camera

Built around a new 12.1MP Exmor RS BSI CMOS sensor coupled with a BIONZ XR image processor, the a7S III is a powerful video oriented mirrorless full-frame camera. The long awaited follow up to the a7 SII, which set the standard for low-light capabilities in the full-frame mirrorless segment, brings not only improvements to that key spec but also a host of other notable upgrades.Key Camera Specs

  • 12.1MP Exmor RS BSI CMOS sensor
  • ISO sensitivity of 40-409600
  • 4K Video Capture at up to 120fps
  • Internal recording at up to 10-bit 4:2:2 color sampling
  • No recording time limit
  • 16-bit raw video output over HDMI-A
  • 759-Point phase-detection autofocus with 92% coverage
  • Dual UHS-II card slots
  • S-Log2/3 or HLG/BT.2020 gamma curves
  • 5.5 Stop IBIS

The new sensor features 759 phase-detection and 425 contrast-detection autofocus points that cover approximately 92% of the image area and promises sensitivity down to -6 EV. Customizable seven-step AF transition speed and five-step AF subject shift sensitivity allows for fine tuning of the autofocus system. As expected, ISO sensitivity is expanded to ISO 40-409600.A 5-axis in-body stabilization system provides 5.5 stops of camera movement, even with adapted lenses, which combined with the 120fps frame-rates help deliver ultra-smooth handheld video.Video can be recorded in either All-I XAVC S-I at up to 600Mbps or XAVC HS which uses H.265 compression for smaller file sizes. Internal 4K recording uses 1:1 pixel readout at up to 120fps with 10-bit 4:2:2 sampling. The a7S III offers extensive color customization including the S-Log2 and S-Log3 gamma curves that can deliver 15+ stops of dynamic range. HLG and BT.2020 color spaces are also available. Recording time limits have been removed and improved heat dissipation has been added to the camera body's design. Internal recording is to UHS-II rated dual card slots that support CFexpress Type A or SD cards. External recording of 16-bit raw video is possible via the full size HDMI port when used with compatible recorders.

Nauticam NA-A7SIII Underwater Housing

Nauticam is the leader in producing intuitively designed precision manufactured aluminum underwater housings for the Sony a7 camera line and continues to innovate with the new NA-A7SIII housing. 

The NA-A7SIII is designed to maximize the video-centric capabilities of the Sony a7S III camera while maintaining it's strong still image potential.  The NA-A7SIII is built around the N100 port system that is shared with the rest of the Nauticam housing lineup for the Sony full-frame mirrorless a7 series.  The N100 system includes a dull range of both macro and wide-angle ports as well as delivering access to the lineup of Nauticam's professional wet optics that are optimized for underwater imaging such as the WACP-1/2 and the SMC-1/2 lenses.  These optics deliver unparalleled image quality underwater expanding what is possible with the powerful a7S III camera.

HDMI Output

The a7S III can output 16-bit raw video signal over HDMI and the NA-A7SIII features an M24 bulkhead that supports the HDMI 2.0 standard.  This allows the NA-A7SIII to be used in conjunction with either a recording monitor such as the Atomos Ninja V in the NA-NinjaV housing  via HDMI 2.0 or standalone monitors such as the SmallHD 502 Bright in the NA-502B housings via HDMI 1.4.  

Optional Magnifying Viewfinder

The a7S III camera features an updated 9.44M-dot OLED viewfinder with a 120fps refresh rate.  Nauticam's line of optional magnifying viewfinders, available in both an angled 45º (32203) or straight 180º (32201) configuration provide enhanced viewing ability as well as a dioptric adjustment knob that can used underwater.  Installation can be achieved without tools in less than a minute.  

Mission Control

Nauticam engineer's Mission Control design philosophy means controls are intuitively placed where they are needed most regardless of their position on the camera.  The NA-A7SIII features a double thumb lever within easy reach of the right handle that triggers the AF-ON and RECORD controls of the camera.  A thumb lever on the left side toggles the PLAYBACK button.  The back panel of the housing provides access to all other rear camera controls including a multidirectional pad.

Patented Port Locking System

Unveiled on the very first Nauticam DSLR housing in 2009, this locking lever has become a signature of the Nauticam brand.  No twisting or threading action is required to mount a port, and it locks securely in place with this lever.  Nauticam also offers locking port extensions, meaning a dome will never twist, even when used with a long extension ring.

Housing Locking Latches

The industry's easiest to use housing closure system, requiring very little hand strength to operate, secures the housing back in place. The latches are safely locked to prevent accidental opening, but are easy to open when needed for a quick battery or memory card change.

HDMI Output

The NA-A7SIII supports the HDMI 2.0 standard allowing connection to optional external monitors and recorders to take advantage of the a7S III raw video HDMI output.

Mission Control

Controls on the NA-A7SIII are intuitively placed to provide quick and responsive access to essential camera controls resulting in fewer missed shots and a smoother operating experience.

Vacuum Check and Leak Detection System

The Nauticam vacuum check and leak detection system is shipped with NA-A7SIII as standard equipment. With the addition of the optional M14 Vacuum Valve (25624) 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.


NA-A7SIII for Sony A7SIII Camera

17428

The long awaited Sony a7S III brings high frame-rate 4K video with incredible low-light sensitivity to the A7 full frame mirrorless lineup. The video-centric follow up to the a7S II adds internal 10-bit 4:2:2 4K capture at up to 120fps while building on the a7S II's already segment leading low-light capabilities. Upgrades also extend to the 9.44M dot OLED viewfinder, 759-point phase detection autofocus and reduced rolling shutter.

Technical Specifications

 Dimensions 339mm(W) x 170mm(H) x 125mm(D)
Weight in air 2.7kg
Weight in water 0.56kg (incl. camera and battery)
Depth Rating 100m
Compatible Cameras Sony a7S III

Introducing NA-A7SIII

The Sony Alpha a7S III Camera

Built around a new 12.1MP Exmor RS BSI CMOS sensor coupled with a BIONZ XR image processor, the a7S III is a powerful video oriented mirrorless full-frame camera. The long awaited follow up to the a7 SII, which set the standard for low-light capabilities in the full-frame mirrorless segment, brings not only improvements to that key spec but also a host of other notable upgrades.Key Camera Specs

  • 12.1MP Exmor RS BSI CMOS sensor
  • ISO sensitivity of 40-409600
  • 4K Video Capture at up to 120fps
  • Internal recording at up to 10-bit 4:2:2 color sampling
  • No recording time limit
  • 16-bit raw video output over HDMI-A
  • 759-Point phase-detection autofocus with 92% coverage
  • Dual UHS-II card slots
  • S-Log2/3 or HLG/BT.2020 gamma curves
  • 5.5 Stop IBIS

The new sensor features 759 phase-detection and 425 contrast-detection autofocus points that cover approximately 92% of the image area and promises sensitivity down to -6 EV. Customizable seven-step AF transition speed and five-step AF subject shift sensitivity allows for fine tuning of the autofocus system. As expected, ISO sensitivity is expanded to ISO 40-409600.A 5-axis in-body stabilization system provides 5.5 stops of camera movement, even with adapted lenses, which combined with the 120fps frame-rates help deliver ultra-smooth handheld video.Video can be recorded in either All-I XAVC S-I at up to 600Mbps or XAVC HS which uses H.265 compression for smaller file sizes. Internal 4K recording uses 1:1 pixel readout at up to 120fps with 10-bit 4:2:2 sampling. The a7S III offers extensive color customization including the S-Log2 and S-Log3 gamma curves that can deliver 15+ stops of dynamic range. HLG and BT.2020 color spaces are also available. Recording time limits have been removed and improved heat dissipation has been added to the camera body's design. Internal recording is to UHS-II rated dual card slots that support CFexpress Type A or SD cards. External recording of 16-bit raw video is possible via the full size HDMI port when used with compatible recorders.

Nauticam NA-A7SIII Underwater Housing

Nauticam is the leader in producing intuitively designed precision manufactured aluminum underwater housings for the Sony a7 camera line and continues to innovate with the new NA-A7SIII housing. 

The NA-A7SIII is designed to maximize the video-centric capabilities of the Sony a7S III camera while maintaining it's strong still image potential.  The NA-A7SIII is built around the N100 port system that is shared with the rest of the Nauticam housing lineup for the Sony full-frame mirrorless a7 series.  The N100 system includes a dull range of both macro and wide-angle ports as well as delivering access to the lineup of Nauticam's professional wet optics that are optimized for underwater imaging such as the WACP-1/2 and the SMC-1/2 lenses.  These optics deliver unparalleled image quality underwater expanding what is possible with the powerful a7S III camera.

HDMI Output

The a7S III can output 16-bit raw video signal over HDMI and the NA-A7SIII features an M24 bulkhead that supports the HDMI 2.0 standard.  This allows the NA-A7SIII to be used in conjunction with either a recording monitor such as the Atomos Ninja V in the NA-NinjaV housing  via HDMI 2.0 or standalone monitors such as the SmallHD 502 Bright in the NA-502B housings via HDMI 1.4.  

Optional Magnifying Viewfinder

The a7S III camera features an updated 9.44M-dot OLED viewfinder with a 120fps refresh rate.  Nauticam's line of optional magnifying viewfinders, available in both an angled 45º (32203) or straight 180º (32201) configuration provide enhanced viewing ability as well as a dioptric adjustment knob that can used underwater.  Installation can be achieved without tools in less than a minute.  

Mission Control

Nauticam engineer's Mission Control design philosophy means controls are intuitively placed where they are needed most regardless of their position on the camera.  The NA-A7SIII features a double thumb lever within easy reach of the right handle that triggers the AF-ON and RECORD controls of the camera.  A thumb lever on the left side toggles the PLAYBACK button.  The back panel of the housing provides access to all other rear camera controls including a multidirectional pad.

Patented Port Locking System

Unveiled on the very first Nauticam DSLR housing in 2009, this locking lever has become a signature of the Nauticam brand.  No twisting or threading action is required to mount a port, and it locks securely in place with this lever.  Nauticam also offers locking port extensions, meaning a dome will never twist, even when used with a long extension ring.

Housing Locking Latches

The industry's easiest to use housing closure system, requiring very little hand strength to operate, secures the housing back in place. The latches are safely locked to prevent accidental opening, but are easy to open when needed for a quick battery or memory card change.

HDMI Output

The NA-A7SIII supports the HDMI 2.0 standard allowing connection to optional external monitors and recorders to take advantage of the a7S III raw video HDMI output.

Mission Control

Controls on the NA-A7SIII are intuitively placed to provide quick and responsive access to essential camera controls resulting in fewer missed shots and a smoother operating experience.

Vacuum Check and Leak Detection System

The Nauticam vacuum check and leak detection system is shipped with NA-A7SIII as standard equipment. With the addition of the optional M14 Vacuum Valve (25624) 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.


  • NA-A7SIII Housing
  • 90120 Spare main O-ring, O-ring remover and lubricant
  • 2x Handles with mounting balls
  • Panasonic CR-2032 Battery (for moisture alarm and vacuum dector)
  • 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
  • 28130  Hand Strap for 28113
  • 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)
  • 37305 N100 to N120 35.5mm Port Adaptor II (NA-A7SIII is not compatible with 37303 or 37301 N100 to N120 Port Adaptor)
HDMI OUTPUT

Please contact Sea Tech for assistance

Required accessories for HDMI 2.0 Cable System:

  • 25086 M24 adaptor for HDMI 2.0 cable (incl. tightening tool)
  • 25094 M24A3R210-M28A1R170 HDMI 2.0 Cable (for NA-A7SIII to use with Ninja V housing)

*Support RAW 16bit 4.2K (4264 x 2408) up to 59.94p output

Monitor 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)

Required accessories for HDMI 1.4 Cable System:

  • 25081 M24-M16 Step Down Adaptor
  • 25095 HDMI (D-A) cable in 220mm length (for connection from HDMI bulkhead to camera)
  • 25033 standard HDMI bulkhead with M16 thread

*25033 is included in NA-058/502H/ 502B-H monitor housing

Monitor Options:

  • 17906 NA-502H housing for Small HD 502 5-inch HD monitor
  • 17920 NA-502B-H Housing for SmallHD 502 Bright Monitor

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.

Update 18/12/2020: There are some production delays at present that may increase wait times on items like housings. We apologise for the inconvenience. If there are any delays with your order, we will communicate this immediately.

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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