Nope, A9 only arrived today. It's fine on the A7R3 too but not on the A7R4, That combo is literally 60%+ miss rate for me with many shots just totally out of focus. The last time i was out, I took 100 shots of a tree creeper testing all the settings to try and work it out, only 2 were any good and I've not used the combo since. I thought it was me at first but its so common and I've never had an issue with the 100-400 on the R4 or with the 200-600 on the A73 or A7R3, I even bought a second 200-600. There's a guy on one forum who returned his R4 and the replacement was even worse lol so I'm thinking its body related and possibly IS related, even at 1/2500 in mode 3 I can get issues on the R4.