Does anybody know if this flash is compatible with external battery packs and if so which ones.
I believe the Mk1 is not but I am having trouble finding out about the Mk2.
Thanks for your help.
I would also any other opinions you may have on this flash gun.
Canon 1DX, 7D2, 16-35 F4 L IS, 24-70 F2.8 V2, 100 F2.8 Macro, 100-400 L IS Mk2, 300 F2.8 L IS, 800 F5.6 L IS, Holga Pinhole lens.