Underwater housing Nauticam OM system OM-1

The Nauticam NA-OM1 underwater housing for Olympus / OM systems OM-1 camera.

In The Box!

• NA-OM1 Housing with two handles and mount balls
• 90136 Spare main o-ring, o-ring remover and lubricant
• 2x plugs for optical fiber cable mount
• Panasonic CR-2450 battery (for moisture alarm and leak detector)
• Set of Allen Keys
• Manual instruction card
• Padded housing bag and shoulder strap

The housing

The OM Systems OM-1 is characterized by its combination of extreme customizability and impressive stabilization in a compact hybrid-shooting package. The Nauticam NA-OM1, similar to the OM-1 is a refinement of it's predecessors. Nauticam has produced housings for a wide range of Micro Four Thirds offerings from both Olympus and Panasonic. One of the most intuitive and easy to use housings available. The NA-OM1 features a thumb lever, easily accessed from the ergonomic rubberized right handle that actuates the AF-ON control with a dedicated red record button close by. This back-button autofocus method prevents the camera from refocusing between shots, allowing the user fine control over a shot's focus and is critical whether shooting macro or fast moving wide-angle subjects.

Strobes & optics

The OM-1 can be used with the optional Olympus FL-LM3 flash inside the NA-OM1 to provide accurate TTL flash triggering through the integrated Sea&Sea style fiber optic bulkheads. For high-speed manual flash triggering, the optional Mini Flash Trigger for Olympus (26306) can be used. Nauticam's extensive line of dome and flat ports support a wide variety of Micro Four Thirds lenses. For even higher image quality and versatility, the NA-OM1 can be used in conjunction with Nauticam's lineup of Water Contact Optics. For example, with the Olympus 14-42mm f/3.5-5.6 EZ Lens, the Nauticam WWL-1 provides a full zoom through ultra wide-angle 130º field of view.

Vacuum system

The Nauticam vacuum check and leak detection system is available with NA-OM1 as standard equipment. Combined with an optional M14 Vacuum Valve II (PN 25624), this monitoring system provides constant updates on the water tight and safe-to-dive status of the housing.

A little about the camera

The OM-1 is built around a completely new 20MP Stacked CMOS image sensor. Stacked sensors are the next generation of technology beyond BSI designs, combining layers of semiconductor to allow more complex designs and faster readout.

The sensor has 20 million microlenses and a Bayer array with 20 million color patches, but there are four photodiodes behind each of these, which are combined to form each pixel. These sub-pixels can be read-out individually, giving the camera four fractionally different perspectives on the world. These are compared to derive depth information about the scene, giving phase difference autofocus in an X-shaped pattern.

With 80 million individual photodiodes to read out, it's perhaps not surprising that Stacked CMOS design only delivers a readout speed twice as fast as that of its predecessor. We've measured the rate at around 1/125th seconds, which is twice as long as the fastest full-frame stacked CMOS chips take, despite the smaller size.

It's still quick enough to improve the performance of the various multi-shot modes the OM-1 offers. For instance, Hand-held High Resolution mode, which shoots eight images with slight offsets to give 50MP images can now be shot with less risk of subject movement between shots, and can be combined much quicker, thanks to the OM-1's more powerful processor.