Hi all, here are the settings i use and have tried - AF-C, single focus spot at center, or 9 section dynamic, focus priority, or release priority, shutter speed to avoid motion blur due to cropping/300mm lens - 1/1250-1/1600, f8 for the sweet spot of the lens, VR on in Normal mode as i am on firm ground and not in a moving vehicle, i have tried it with Vr off but i can not keep the aircraft even steady in the viewfinder let alone track it.
When i use the viewfinder as LV is no good for this kind of work, in AF-C mode the 2 left and right arrows each side of the focus confirm dot, go mad in a fast dance - in the manual and as i have been told, indicates that focus can not be done and to try another focus method or focus on another object.
I have to overcome this by switching to either manual focus set to a hyper focal focus distance, that renders subjects within the dof - in focus(this has not been very accurate with pin point micro focus with cropping afterwards) or for AF i have to use the cam's auto mode AF-A that firstly tries to use a single focus mode AF-S and then applies predictive focus tracking if it detects movement, in this mode the focus brackets do not lite up and focus dot confirms focus, and seems to track the subjects like the AF-C mode should be doing.
I also want to add i have the Lock-on switched off as this just delays the focus time.
Something is odd here as it seems in my cam AF-C and AF-A are behaving back to front.
P.