When it doesn't fit anywhere else
 #168560  by PLS30820
I've used a Black Magic Pocket Cinema Camera for everything from my drone to streaming live on my pc. It does fairly well in dark lighting, when i've recorded bands at bars/festivals and you can shoot in RAW so it can be touched up in post. Not the new 4 or 6K version, but the 1080p version.

edit* it also has audio input and meters so you can link up any type of mic you have