Nauticam Ships Housings for SmallHD 503 Monitors

Nauticam has announced two new housings for SmallHD 503 UltraBright monitors. The NA-503 monitor is available in either HDMI (NA-503-H)or 3G-SDI (NA-503S) input versions. Both take two Sony NP-F750 batteries, via the SmallHD L series backing plate. It has 2 ports, one M16 and one M28. The latter allows for HDMI or SDI throughput with an appropriate bulkhead.

The NA-503-H and NA-503-S are shipping now, priced at $2,586.

From Nauticam

NA-503-H Housing for SmallHD 503 UltraBright On-Camera Monitor (With HDMI 1.4 input)


SKU # 17925

The SmallHD 503 UltraBright monitor is an incredibly compact and sharp 5-inch daylight viewable field monitor and the perfect complement to a Nauticam underwater video system. The UltraBright version adds 2200 nit daylight viewable brightness to the already stunning 5″, 1920 x 1080 Full HD Display. The 443 PPI monitor comes equipped with an amazing suite of software tools for image monitoring in a compact form factor. This version of the NA-503-H is set up for an HDMI camera connection, see NA-503-S for an HD-SDI camera connection.




There aren’t enough good things that can be said about this screen. Pixel density (the specification that results in sharpness) now sits at 443 PPI (higher than an iPhone 11). 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 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 the 501, 502, and 502 Bright models of SmallHD monitors and continue to evolve and innovate with the new NA-503 for the 503 UltraBright 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-503 housing provides access to all monitor controls, and the complete menu system is available in the housing, and at depth.

The Nauticam NA-503 housing features the rugged build quality and advanced manufacturing expertise our user base has come to expect. The joystick navigation system used by the 503 UltraBright monitor is translated to four directional arrows, a center select button, dedicated “back/power” button, along with the “F1” and “F2” buttons underneath. The interface is simple, but elegant, and perfectly suited to the underwater environment.

The SmallHD 503 UltraBright does require the addition of the SmallHD L-Series Battery Plate for 503/703 UltraBright. The Nauticam NA-503 housing accepts up to two Sony NP-F750 batteries which provides up to 4.5 hours of run time.

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.


The 503 UltraBright monitor can also function as a passthrough monitor, passing either HDMI or SDI to a surface monitor. The NA-503 housings feature a M28 opening that can accommodate another HD-SDI or HDMI cable.

The SmallHD 503 UltraBright also features a cross-conversion feature meaning an HDMI input from the camera can be converted to an HD-SDI signal by the monitor and passed through a second bulkhead to a surface monitor. HD-SDI can travel over longer distances making this ideal for surface monitoring even from a camera that only features HDMI output. Nauticam HD-SDI Cable Accessories provide a reliable way of transporting a video signal over long distances.

Accessory Ports

1 x M16 pre-installed with 25625 Vacuum Valve II
1x M28 pre-installed with M28 to M16 Step Down Adapter


What’s In The Box:


Optional Monitor Mounting System: