Hello- just watched your video about back button focusing. I have a D60 and had to set up bit differently because I don't have Af activation. I used controls and then assign AE-L/AF-L button. The focus on pics does seem great. When I press AF back button to lock focus sometimes the focus lock in view finder just keeps acting like it can't grab focus, other times the focus indicator works before or when I press shutter. Am I right in that I shouldn't count on that function when using back button? Have it set to AF-C. Thanks!