deltoidjohn
Veteran
I have the Nikon D850, but have never messed with the video. what exactly do you use with it for audio, if you don't mind specifying that.
I've got two Sennheiser G3 wireless receivers going into the Shogun Inferno via the included XLR breakout cable. The D850 has a Rode Video mic plugged into it for nat sound, and that also goes into the Shogun Inferno over the HDMI so files from the Shogun Inferno all have 4 audio channels (though because I'm not using a stereo mic channel 3 & 4 are duplicates). I've got 4 frames of offset on the analog inputs to make it line up with the HDMI input.
I monitor from the Shogun but it only lets you monitor a "pair" of channels - either 1 & 2, or 3 & 4, so I'm usually monitoring the lavs with the headphones, and glancing at the meters to check that the Rode mic on the D850 is at a level somewhere in the ballpark.
One cool thing I've found about using this setup, is that I can shoot slow-motion and still have sound at the same time - while recording a silent, 100p version in camera, the Shogun will record a 50p real-time stream which includes the audio from the XLR's. Great for action where you want to be shooting slow-mo but also want to be getting some audio grabs.