The EOS R was still around when the decision was made to add the 100-400mm IS II and 1.4X extender. Changing to the R6 took it from a relative reach of about 616mm to roughly 500mm, which is less than my preferred minimum reach. And for some reason, these copies of TC and lens don’t mesh well.
With the two fresnel lenses giving better results and weighing far less, the EF zoom is the odd “man” out. Interestingly, my shopkeeper friend mentioned yesterday that Canon will be bringing an RF 200-600mm to the market.
My friend, who also chases birds in his free time, also mentioned (without knowing I was on my way to get the Sony 200-600mm) that the Sony zoom and A9 (with TC when needed) are currently the best birding combination available. I wish he hadn’t said that part about the a9, which I ruefully regretted passing over at the time the a7r IV was introduced.
Out the better part of a hot, sunny day with the a6400 and 200-600, critters weren’t as available as they are in overcast weather. But the ones out there were a little more confiding than usual, like the pipit below. Maybe it was just too hot to run away.
For a budget crop sensor camera, the a6400 using wide AF area with animal detection was particularly good at allocating the focal plane except on more distant subjects, and didn’t miss a single BIF opportunity. It’s not in the same league as the R6, not even close; but it gets the job done.
Just came to realize it was still on human detection earlier today, so I guess it did remarkably well! 🥴 Well, tomorrow’s another day . . .