I am going to try back button focusing with my D7200 and understand their are 2 steps to do this under "Custom Setting Menu":
(1) f Controls - f4 - AF-ON
(2) a Autofocus - a4 AF activation - AF-ON only
Before shooting using BBF I mostly used AF-C and switched between the Release & Focus options. Does it matter if a1 AF-C priority selection is in Release or Focus when using BBF.