Strange. I get all kinds of sharp photos chasing a 2.5 year old around that is camera shy. Many, many more than I ever did with my 5D Mark III. I turned continuous focus on and use eye-AF. Voila! Even get the little pores the eyelashes emanate from and can see myself clearly in his brown eyes.Mirrorless is not there yet. I am still trying to get used to the focussing an tracking system. Of is not as nearly as good as the 1dx or the 5d IV. Try to get birds or even kids with the r. It is hard .... to catch a sharp picture with all that mouvement.