Thank you so much,
@maxxus46! Definitely sounds similar in regards to the A1 with 200-600 and how purchasing the 300mm GM would require the 2x tele. Right now, I'm ready for a 600mm f4 and understand the cons regarding price and weight. I also need more than 600mm so the 300mm GM is a no-go for me.
I have had the z9 for 5 days and am impressed! I am guessing this is the same as your z8. I agree, the AF is more reliable and stickier on the z9 vs the A1 at least in the Nikon rental and my A1 with a Sony 600mm GM rental. The auto AF is fantastic and I agree the bird eye recognition is also great. I realize everyone is different, but I was expecting it would be "sub-par" but it is top notch. It was tough paying for another rental but so glad I did. Well worth it!
Also, the Nikon 600mm TC is a game-changer! That is so useful for what I do. Like you, I am a birder, and much of what I do is documentation in addition to art. Being able to get to 840mm with a flick of a switch helps with IDs, documenting behaviors, and producing views that 600mm can't.
What I'm struggling a bit with is nailing my exposure. I love Sony's "blinkies/zebras" and those have really helped remind me that I need to adjust my exposure comp. I'm hoping someone could help me with that. If the only option is viewing the histogram, that slows things down which isn't ideal when you're constantly changing exp comp like I do.
Thanks again,
@maxxus46! Enjoy your z8 and 600mm PF! Take care!