Niko v1 autofocus @ f8 with ft1

I am not sure if it's common knowledge, but the nikon v1 actually autofocus with a f4 lens and tc2III attached, and it was overcast with snow, the speed was actually not extremely bad, and i am really curious to see how it performs with sunny weather

shooting at f8 and long focal lengths means either a tripod with shutter release, or high iso ( especially when it is not sunny), i dont really like shooting high ISO with the v1

But i think in sunny weather , it could be even more surprising!