The Atomos line of monitor/recorders has allowed DSLR and Mirrorless shooters to exceed the inherent compression-induced image quality and recording duration limitations of their cameras when shooting video. For cameras that have "clean" HDMI output, meaning that information is passed from the sensor without any menu information, the Atomos monitors enabled recording of footage at the highest resolution, frame rate and quality possible without the recording duration limits of the camera. Resolution, frame rate, and quality vary from camera to camera.
The HDMI 1.4 standard allows for transmission of frame rates up to 30p at 4K resolution with the highest quality settings and has long been supported in Nauticam housings using the standard HDMI bulkhead and monitor housings such as the Nauticam Atomos Flame for the Atomos Ninja Flame and Shogun Flame/Inferno monitor/recorders. With cameras such as the Panasonic GH5 offering DCI 4K output at a 60p frame rate, the HDMI 1.4 standard is not capable of handling the bandwidth for the signal with full color-rendering quality.
The Atomos Ninja V and HDMI 2.0
The HDMI 2.0 standard is capable of supporting faster 60p frame rates at DCI 4K resolution with 10-bit color and 4:2:2 chroma subsampling. The Atomos Ninja V and Shogun Inferno monitor/recorders, when matched with supported cameras can record this 4K 60p 4:2:2 10-bit video in a variety of formats. ProRes RAW recording from the Nikon Z7 and Z6 is currently under development as well for the Ninja V.
To harness this jump to HDMI 2.0, Nauticam has redesigned its HDMI interface. The system is built around the new end-to-end HDMI 2.0 cable. With HDMI 1.4, there were fittings at the bulkheads from which a separate cable was used inside the camera and monitor housings to go from the bulkhead to the camera or monitor. With the Nauticam HDMI 2.0 cable system there are no longer fittings at the bulkheads, there is a continuous connection from camera to monitor. The NA-Ninja V housing therefore ships without an included cable. The appropriate length and connector-type cable must be selected based on the camera that will be used. This continuous cable will help to insure signal fidelity from camera to recorder. To support these new cables, we've developed the larger bore M28 bulkhead.
The standard HDMI 1.4 bulkhead on the left and the new M28 continuous HDMI 2.0 cable on the right
The list of currently supported housings and their highest quality output specifications are below:
|Camera Model||Resolution||Frame Rate||Chroma Subsampling||Bit Depth|
|FujiFilm X-T3||DCI 4K||60p||4:2:2||10-bit|
|BlackMagic Pocket Cinema Camera 4K||HD||60p||4:2:2||10-bit|
|Panasonic GH5S||DCI 4K||60p||4:2:2||10-bit|
|Olympus OM-D E-M1X||UHD 4K||30p||4:2:2||8-bit|
|Nikon Z7/6||UHD 4K||30p||4:2:2 and ProRes RAW*||10-bit|
*=planned future release
**=requires a paid firmware update to be released in July 2019
V-Edition housings for GH5/GH5S and Nikon Z6/Z7 Cameras
The NA-GH5 and NA-Z7 housings feature the M16 bulkhead which supports an HDMI 1.4 connection. To support the new HDMI 2.0 connection, Nauticam is producing the NA-GH5V and NA-Z7V housings that feature the larger-bore M28 Bulkhead.