Do you use big - truly big - lenses for any of this? If so, I am really interested in seeing how the A9 works for you when combined with adapted supertelephotos.
I've become discontent with my Canon gear, and am considering either switching to Sony or upgrading to a better Canon DSLR. I would love Sony's big DSLR (that new one that came out not too long ago, with 40+ megapixels), but then I would still get that dreaded shutter/mirror noise.
Whatever body I get, I would be using it primarily with a 300-800mm f5.6 Sigma. If you use your A9 on anything similar, please share your insights with me.
There was a video here posted on someone using a canon 500 f4/5 prime and it focused fine lol