Hi Maddog
I use a GPHB4 with a 3.8mm 3rd party lens and a ND8 filter to slow down the shutter speed.
Camera settings - Resolution: 4k, 25fps, Auto Exposure, FOV: Wide, Spot Meter: Off, Color: Gopro (Protune), White Balance: Auto, Sharpness: Low, ISO Limit: 400, EV Comp: -0.5.
For the edit I...