Nauticam NA-502B-S Housing for SmallHD 502 Bright Monitor (with HD-SDI input support)

NauticamSKU: 17921

Sale price$2,690.00


The SmallHD 502 Bright monitor is an incredibly light and sharp 5-inch daylight viewable field monitor and the perfect complement to a Nauticam underwater video system. The Bright version of the 502 adds 1000 nit daylight viewable brightness to the already stunning 5″, 1920 x 1080 Full HD Display. The 441 PPI monitor comes equipped with an amazing suite of software tools for image monitoring in a compact form factor. This version of the NA-502B is setup for an HD-SDI camera connection, see NA-502B-H for an HDMI camera connection.


Depth Rating 100m
Weight in Air 1.41kg
Weight in Water -20g
Dimensions 222mm (W) × 122mm (H) × 77mm (D)



There aren’t enough good things that can be said about this screen. Pixel density (the specification that results in sharpness) now sits at 441 PPI (higher than an iPhone 8). The monitor is capable of displaying 100% of the REC 709 color space allowing for accurate judgement of color and exposure even in bright daylight conditions.

The monitor feels immediately familiar, almost identical in size to your favorite smart phone. A rubberized joystick is used to effortlessly flip through video “pages”. Each page accepts multiple imagine analysis tools, configured by the user for their individual needs.



This overlay mode "paints" areas of the image that have reached a certain brightness value allowing the shooter to see what parts of the image may be over or underexposed. The colors used to show these luminance values can be customized as well.


A slightly simpler version of the Exposure Assistant this tool "paints" areas of the image with a stripe pattern when they reach a pre-set brightness value allowing you to quickly see areas that may be in danger of being over or under-exposed. You can run two zebra overlays at once allowing you to monitor both highlights and shadows simultaneously. This tool does not change the underlying color of the image on the display making it a less obtrusive option than False Color overlays.


The waveform shows you the brightness of the image as a map, matching the screen from left to right. This tool can also be set to RGB mode in which case it monitors Chrominance (Color) as well as Luminance (Brightness). The RGB and RGB Parade modes will also help judge color balance (i.e. white balance), especially useful to underwater shooters.


This tool shows an RGB Luminance Histogram that allows for easy judgement of each channel and the overall image's exposure.



Zoom in on any page by simply pushing the joystick up. This allows for accurate judgement of critical focus.


This mode highlights the sharpest areas of the image with an assignable color. This allows for quick an accurate judgement of focus without having to zoom into the image.


This is a more subtle version of Focus Assist that does not change the underlying image as much yet still shows the outline of the sharpest parts of the image in an assignable color.


Nauticam has supported both the 501 and 502 models of SmallHD montiors and continue to evolve and innovate with the new NA-502B for the 502 Bright Monitor. With more cameras offering video capability the need for an efficient and bright external monitor is only growing. With Nauticam's bulkhead system, attaching and detaching the cable system can be done quickly in the field. This means you can easily switch from a still photo setup to a video setup in between dives, quickly removing the monitor and even installing a magnifying viewfinder to the housing.

The NA-502B housing provides access to all monitor controls, and the complete menu system is available in the housing, and at depth.

The Nauticam NA-502B housing features the rugged build quality and advanced manufacturing expertise our user base has come to expect. The joystick navigation system used by the 502 Bright monitor is translated to four directional arrows, a center select button, and the dedicated “back” button. The interface is simple, but elegant, and perfectly suited to the underwater environment.

The form factor of 502 Bright monitor is perfectly suited for an underwater housing, with HDMI / HD-SDI cables nestled between two readily available Canon LP-E6 Batteries that power the monitor.

HDMI and HD-SDI are both supported by a single housing, providing an extremely broad range of camera support in a single underwater monitor system.

NOTE: This housing (17921) comes with an HD-SDI connection pre-installed. Unlike previous 502 models the 502 Bright is only available in one configuration that includes both HD-SDI and HDMI so choose the housing model that is appropriate for your camera, i.e. 17920 for HDMI and 17921 for HD-SDI.


The 502 Bright monitor can also function as a passthrough monitor, passing SDI to a surface monitor. The NA-502B housings feature a second M16 opening that can accommodate another HD-SDI cable. HD-SDI can travel over longer distances making this ideal for surface monitoring. Nauticam HD-SDI Cable Accessories provide a reliable way of transporting a video signal over long distances.

Accessory Ports

Front Top: 1 x M16 pre-installed with 25625 Vacuum Valve II

Rear Bottom: 1 x M16 (normally used for 25028 M16 SDI Bulkhead for SDI-out)



      What's In The Box:

      • 17921 NA-502B Monitor with HD-SDI Input Support
      • 17916 Monitor hood for NA-501/502 Housing
      • 25625 M16 Vacuum Valve II (Pushbutton Release)
      • 25060 SDI cable in 0.3m length (for connection from camera to underside of SDI Bulkhead)
      • 25058 M16 SDI Bulkhead
      • 25072 SDI cable in 0.75m length (for connection from SDI bulkhead and 502 monitor)
      • Mounting ball
      • CR2032 Battery


      • 25058 M16 SDI Bulkhead
      • 25059 SDI cable extension adaptor
      • 25060 SDI cable in 0.3m length (for connection from camera to underside of SDI Bulkhead)
      • 25062 SDI cable in 5m length (for connection between SDI Bulkheads)
      • 25063 SDI cable in 30m length (for connection between SDI Bulkheads)
      • 25064 SDI surface monitor cable in 15m length (for connection from SDI Bulkhead to Surface Monitor on land)
      • 25065 SDI surface monitor cable in 45m length (for connection from SDI Bulkhead to Surface Monitor on land)
      • 90136 Replacement o-ring





      An oversized rotary latch seals the housing, and securely locks in place without risk of accidental opening.  No control functions need to be preset or aligned when installing the monitor, it simply drops into the housing and is ready to use.


      A removable monitor shade, held securely in place with four small screws is included with the NA-502B housing and provides better monitor visibility in bright conditions.


      The NA-502B provides access to all the controls of the SmallHD 502 Bright monitor including the joystick and a dedicated "back" button.


      The NA-502B Housing includes Nauticam's Vacuum Check and Leak Detection system with an M16 Vacuum Valve II pre-installed.  This temperature compensated system provides constant visual confirmation of watertightness through a multicolor LED.


      The 502 Bright monitor drops right in and is secured using two rotating latches.  Cable routing is simple as is direct access to the batteries without having to remove the monitor from the housing.

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