The all new Nikon Z9 has made its entrance with a big loud bang - Read all about it here
Hi Wally, it's the 70-200mm f4 not the f2.8. I've modified the topic title!
For anything above 24 MPix I would recommend the TC14 III, a net improvement in performance.
Thanks. I have an f4, and have just ordered a used TC14II :-)