I've noticed that a number of m43 forum contributors (MAubrey, Robbie, Amin etc) have moved to Sony FF as their full time camera. I am wondering what the motivators are? For me I can't see any significant reason to move from m43 for the kind of shooting I do a lot of. The primary reason is there seems to be no FE mount long telephotos and only one recommended APS-C Sony lens (SAL70400G 70-400mm f/4-5.6 G SSM) which is A-mount. If I am going to use APS-C I don't see a big reason to move from m43. An example of the sort of images I would shoot: 150f2 (300mm FF FOV) 150f2+EC20 (600 FF FOV) For landscapes I see a real reason to move to FF (E-M5ii aside assuming it is really still), but I don't see other compelling reasons. What am I missing?