Connecting Your Camera to Your Mac
It's gotten a bit crazy with all the "daisy chaining" required! But, it does work!
First you need a 9 pin to 4 pin Firewire cable which is plugged directly into your DV camcorder. You'll plug this into the first adaptor, a Thunderbolt 2 to Firewire adaptor:
You then plug this into the second adaptor, a Thunderbolt 3 (USB-C)to Thunderbolt 2 adaptor.
Finally plug this into your USB-C port on your Mac.