I think Canon will be oh-so-close. but not quite there. I noticed on Jared's 1DX Mark III video that it still seemed a little erratic for primary use. They are also still missing animal AF.As a heavy user of the R, I am skeptical that the next generation of mirrorless will have advanced sufficiently to compete with a DSLR for nature or action. I'd like to be wrong, but I'll wait until the R5 is actually released and out in the field before getting my hopes up.
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