Hello from Pennsylvania USA. New to Sony. Switched from Nikon. Have A1 and A9ii. Waiting on the 600 f/4 looks like it is 2-4 months out. Using my Sony gear for wildlife and birds. Sony's autofocus is a game changer.
Using the A1 primarily, but the A9ii is still a stellar camera. I keep the 200-600 on the A1 and the 100-400 on the A9ii. I keep both at the ready. Still waiting on my 600 F/4. I have put in the order and now looks like I may have it within a month. A dream come true. Really hoping that Sony comes out with a 300 F/2.8 or a 200-400 F4 for low light situations.