I also recently purchased A7R4+200-600G. This is my first mirrorless/Sony experience and i use it alongside my Nikon gear. Haven't had enough time to test this combo well enough but here is what i got from my test shots. Problem with this combo seems to be the inconsistent autofocus performance on moving targets. Would like to wait for a while and see if Sony comes up with a firmware fix. Has anyone here had any luck with adapted canon/ sigma glass for BIF?
