Very cool butterfly shots! I have an a6300 and am considering moving up to the 6400 or 6700. As someone who has owned a 6400 and 6700, can you speak to any differences in autofocus ability that you are noticing? I am on the fence between the a6400 and a6700 and am trying to see if the AI autofocus of the 6700 is much of a real upgrade over the 6400. Either AF system would be a nice upgrade over my 6300.
Once you've used object recognition its difficult to go back;
First it was humans, eye/face
Then it was birds and animals
Now its insects, cars, planes too.
Thing is, I've long had a problem with the size of their smallest af box, outside of the S-AF cross-hair option, getting pin-point accuracy in C-AF of insects is difficult, this is why I showed those picture, even with pin-point on many cameras, you literally take hundreds of pictures and nothing is accurate. Even the a6700 isn't perfect, these insects are also tiny and moving, so its helpful that we have these technologies, you have to work with it and use it and sometimes it still misses, other times it doesn't, but, would I be without it now, no, not ever! For birds the hit rate and use case goes up massively, its got more to play with and the camera will be picking out birds eye's perfectly, its insane.
If you don't do wildlife and can live with the a6400 shortcomings in this area and the other new stuff, uhs-ii, bigger battery, fas screen etc then maybe a6400 can suffice, for sure. Personally, the a6700 is more than just skin deep, its all about the scan speed of the sensor and the quality of this new sensor, especially color, its also allegedly 14bit in lossless compressed too so overall when pushed image quality and color should be up there with any FF camera, including for low light long shutter over 30 seconds, this is a real game-changer for Sony at this level imo. The only reason to choose FF if indeed the 14bit actually is validated on the a6700 is for the noise/color/dr and additional stop of dof. Seriously the stop of dof is not really an issue any more with 1.2/1.4 primes, how much do you want in focus? So, for me, personally I'd see the a6700 as a real long term camera system that will grow with you, no need to feel second best to FF, no way you are going to get 26mp at 11fps at 750-900mm with object tracking with the performance of the a6700 on FF any time soon except with compromises of some sort, size, weight, cost? Even then, currently, it will change in the future, the a1 can't do what the a6700 can do and lets be honest if I decide to fit a small prime or the 18-55 2.8, 10-20 f4 it will never be as compact, even in crop mode!
I shoot a lot of closeup/macro and would be very interested to hear how of your experiences with macro/closeup focusing/tracking of the a6400 and a6700. Thanks in advance for any insights you can provide.
The a6700 for your use case, remember it also has focus bracketing built-in will be a much better long term investment imo.