Love the PowerBank idea, plus if you have EF lens with the ND Adapter, apparently you can control the ND Filter wheel. Not sure how this actually works, whether its a port with Focus Knob control, or it uses one of the two Focus/zoom knobs. "For EF lens the RF to EF adapter with a variable ND filter can be used with an optional control kit."
Hi, Im Hugh from South Australia, have been diving since the 80's and shooting Video and Photos on and off ever since as a hobby in the Ocean and Caves. Still learning! Have a Z-Cam S6 in Nauticam Cinema Housing. Looking and moving to Nikon ZR for ease of travel and with a view to shooting photos again in addition to video. Regards Hugh