70-200 2.8 with 1.7 teleconverter. I know I have to stop down...I am taking this in small steps so I can get to your point one day...well, probably not with this lens, but it'll get me a heck of a lot closer than I was.well if you want the head of an egret in flight in focus the only option is stop down. no way your going to hit focus on the head in flight
also what lens are you using