bwcolor
Veteran
I see this kind of comment often about non-DSLR cameras. Didn't people take great pictures of sports before autofocus? Couldn't they do the same now?
...and birds need DSLR autofocus? I guess someone will have to break the news to Douglas Herr, because he seems to have not gotten the memo.
I shoot soccer with an RTS III and manual focus Zeiss 100-300mm and it isn't easy. My 1DMKIII and equivalent autofocus works much better and I bet a modern 1D is better yet. I know very little about birds, but other than sitting on a branch, or hovering, they can certainly move quickly.
So, if someone wants the best tool for fast moving sports, I don't think that we are yet considering mirrorless cameras. That will probably change over the next five years, or less.