I have a Sony a7RM3 and the Sony FE100-400 GM lens. I have been photographing birds for a few months now, and have tried several different setting. I'm currently using "Lock on - Expanding Flexible spot" as recommended by Mark Galer, a Sony Global Imaging Ambassador. I do often get sharp results, but not as often as I would like. Mark makes his recommendations on Youtube:
, but he is not photographing birds in flight. I'm wondering if anyone here has experience with birds in flight, and what they have found works best.
Thanks,
John