Olympus OM-D E-M5 III - Nauticam NA-EM5III housing - 17815

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NA-EM5III housing for Olympus OM-D E-M5 III camera

At first glance, the Olympus OM-D E-M5 Mark III is an E-M1 Mark II in a more compact and lighter package.  In fact, the E-M5 Mark III shares the same 20MP Live MOS sensor and autofocus system as the E-M1 Mark II.  With the E-M5 Mark III there is also 4K DCI video recording at 24p, UHD at up to 30p and 10fps burst shooting with continuous autofocus. To help nail focus and exposure, the electronic viewfinder is also now an OLED display with 60fps refresh rate.  

Introducing NA-EM5III

The Olympus OM-D E-M5 Mark III Camera

Weighing in at under one pound, the E-M5 Mark III packs an outsized punch.  The E-M5 Mark III is built around the same 20Mp Live MOS sensor and Dual F.A.S.T Autofocus system as the larger OM-D E-M1 Mark II.  New for the Mark III is the addition of a 121-point hybrid AF system which, combined with the powerful TruePic VIII processor allows for 10fps burst mode capture with AF-C.  The Mark III's EVF has been upgraded to an OLED display with 60fps refresh rate.  The 5-axis in-body stabilization also receives an 0.5 stop bump to 5.5EV.  

The E-M5 Mark III also steps up in the video category with DCI 4K at 24p or stabilized UHD 4K at 30p using the full width of the sensor to maintain field-of-view.  HDMI output supports the 1.4 standard with 8-bit 4:2:2 at up to 30p quality.

Key Camera Specs

  • 20MP Live MOS Four Thirds Sensor
  • 121-point Hybrid AF System
  • 10 fps burst shooting with AF-C
  • DCI 4K/24p and UHD 4K/30p video
  • HDMI Output
  • 5.5EV of image stabilization (CIPA-rating)
  • 2.36M-dot OLED EVF

With the OM-D E-M5 Mark III, Olympus brings a host of features from their flagship Four Thirds models into an economical and compact package that is ideal for the traveling image maker.  

The Nauticam NA-EM5III Underwater Housing

The OM-D E-M5 Mark III places the power of the E-M1 Mark II in a compact travel-friendly package and so does the NA-EM5III. Building on our strong lineup of mirrorless camera housings, the NA-EM5III is a feature-rich underwater imaging tool. Our Mission Control design philosophy insures that critical controls are clearly labeled and easy to access with intuitive placement.

The NA-EM5III is built around the extensive N85 port system. Optimized port solutions for a wide variety of Micro Four Thirds lenses and access to our Underwater Corrective Optics makes the Nauticam NA-EM5III a superior image-making platform. 

Stainless steel stiffening brackets and a shutter release extension, which are compatible with the optional Easitray II or Flexitray II tray systems are included with the NA-EM5III. An M10 threaded accessory mounting point is also ready to accept the optional M10 strobe mounting ball for additional accessory mounting flexibility.

HDMI Connectivity

A forward M16 bulkhead can be used for the optional HDMI 1.4 Bulkhead for use with external monitor housings such as the NA-502 or NA-502B for the SmallHD 502 and 502 Bright monitors.  See sidebar for recommended configurations.

Viewfinder Options

The E-M5 mark III has an upgraded OLED Electronic Viewfinder.  A clear view for fine focus and composition is critical for successful underwater photography, and nothing beats a magnifying viewfinder. These viewfinders use distance, not closeup vision, and provide a large, clear view of the high resolution Olympus electronic viewfinder. Available in Angled 45º (PN 32205) and Straight 180º (PN 32204) formats, both viewfinders have external dioptric adjustments for dialing in perfect correction matched to the photographer’s eyesight.

Rapid Fire Optical Flash Triggering

The E-M5 Mark III camera with the included FL-LM3 flash is limited to 2-3 fps continuous shooting, even when a low manual power is selected in the camera flash menu. In situations where continuous optical shooting is required, Nauticam’s Mini Flash Trigger for Olympus (26306) can trigger external strobes over fiber optic at up to 10 frames per second! The trigger is powered by onboard coin style lithium batteries, with thousands of flashes available from a set.  

The NA-EM5III comes fiber optic ready and accepts standard Sea & Sea style bushing connections. Nauticam Universal Fiber Optic cables provide exceptional light transmission for accurate TTL performance.

Electrical triggering of legacy wired strobe systems is possible via an electrical Nikonos style bulkhead (optional).

Integrated Vacuum Check and Leak Detection System

The Nauticam vacuum check and leak detection system is available with NA-EM5III as standard equipment. Combined with an optional vacuum valve (PN 25624 or 25625), 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.


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.


The secure single rotating housing latch opens the housing back allowing for quick and easy battery or media changes.

Mission Control

Essential controls exactly where you need them to be.  Our mission control design philosophy delivers intuitive control placement, all within easy reach of a natural hand position.

Flash Control 

The NA-EM5III supports the use of Olympus' FL-LM3 flash or the optional Nauticam Mini Flash Trigger (26306) for fiber-optic flash triggering via built-in Sea&Sea style bushing connections. 

In The Box
  • NA-EM5III housing
  • 2x Optical bulkhead plugs (Pre-mounted)
  • 90139 Spare O-ring, O-ring remover and Lubricant
  • Panasonic CR-2032 Battery (for Moisture alarm)
  • A set of Allen key
  • Set of handle brackets with shutter release extension
  • 32204 Nauticam 180˚ straight viewfinder for MIL housings
  • 32205 Nauticam 45˚ viewfinder for MIL housings
  • 36316 Hand strap for Mirrorless IL camera & compact camera housing (Standard)
  • 25221 M10 strobe mounting ball for housing
  • 25624 M14 Vacuum Valve II (Pushbutton Release)
  • 25625 M16 Vacuum Valve II (Pushbutton Release)
  • 26306 Mini Flash Trigger for Olympus
Monitor Mounting Options:
  • 17906 NA-502H housing for Small HD 502 5-inch HD monitor (with HDMI 1.4 input support)
  • 17920 NA-502B-H Housing for SmallHD 502 Bright Monitor (with HDMI 1.4 input support)

Accessories for HDMI Connectivity (1.4)**
  • 25028 Socket extension for 25032 HDMI bulkhead with M16 thread
  • 25032 Custom HDMI bulkhead to use with socket extension
  • 25076 HDMI (D-D) Cable in 200mm Length (for internal connection from HDMI bulkhead to camera)

**These three parts are included in the monitor housing.

Dimensions 196mm(W) x 166mm (H) x 99mm(D)
Weight in air 1.4kg
Weight in water 0.18kg (incl. camera and battery)
Depth rating 100m
Port opening N85

April/May 2022 Delays:

Due to further Omicron outbreaks in China, some products may be delayed. Not all brands or products will be affected by this. As some products are kept in stock as a matter of course, these should not be affected.

If you need things urgently please contact us and check ETA on the items you require.

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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.

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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!


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

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Want to know more?

These Nauticam housings are non-returnable, non-refundable, non-cancellable, and may be subject to extended lead times as they are manufactured on demand. We always do our best to meet trip deadlines so please advise us if you have a trip coming up!

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