Just last week I was chatting with someone that runs a golf tournament. In the past they would hire a photographer but last year they didn't. What happened? Nothing. As folk carry their own smart phones and can take snaps the market for the pro photo person vanished.
Another issue is there is no best one. I see great results from Sony, Nikon, Canon, RED and others because as we all know "the camera does not take the shot."
Discussing about the camera brands available for professionals, which among them is the best one