>>4263941>f9 constant>300-800>only a 1.2x built in tc (might as well crop)if the money isnt a big deal for you an r5-2+200-800 f6.3-9 is way better, about the same size, and might be able to use a 2x tc. you can also opt for much faster zooms than mft has.
just assuming that lens alone you get way more reach than mft can hope for without speedbooster adapting cope from the near-20mp aps-c crop as an option while retaining more of a wide end for getting closer or just keeping that glorious high res ff quality
