I played hookie at work this morning in order to go out warbler hunting, and found a nice little spot along a creek a few miles from my house. Had a good deal of Yellow-rumps, and single copies of Palm and Pine Warbler. It just felt fantastic to be out shooting again with birds I'm actually excited about.
Using the 800PF and 400 4.5 + 1.4TC, both lenses were used effectively depending on how close I was able to get. A 600 TC would be the ultimate lens for this though, but I'd be fine w/ a 600 f/5.6 or even f/6.3 PF lens.
These are full non-cropped shots from the Z9 and 800PF; don't think I could ask for anything more in terms of sharpness and clarity. As of now, if I'm going out warblering, I'll choose the 800 over the 400 4.5.
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View attachment 59644