Cause I check on Nissin website and it state Nikon D7000 only use Di622 mark II.
Currently I have nikon D5000 with Nisin Di622 mark I, plan to sell my D5000 and buy D7000.
If Di622 mark I can use on D7000, then I will not sell it.
I am using Di622 Mark II with my D7000, no problem.
Good flash, chosen cos doesn't want to spend $$$ on Nikon flash as I'm a non professionel and how often using a flash?