Let me start by saying I am an amateur, I do not plan to make money with photography. I take photos because I love doing it and it makes me happy. I do not plan to ever spend $7000 on a camera body $1500 is more my max, this is a hobby. I love taking sports shots of my son playing soccer, currently I just use a sony NEX-F3. Its my learning tool, with a small pancake lens its point and shoot size and with a 55-210 I can grab some nice shots on the soccer field. I am looking to take my first step into the world of DSLR, but I have learned I need a few things and they can get expensive. I know I can not afford 15 frames a second, but I also know I can live with 4-5fps if positions myself correctly and anticipate the shot I want. I have also learned that focus speed is super important, nothing worse to me than missing a shot because my camera was struggling to find focus at distance. So I still have to decide if I was an APS-c or full frame, but what I am really trying to figure out is what camera is going to give me the best bang for the buck if I need fast focusing and a good zoom lens. Does it matter if the focus motor is in the camera body or the lens? I thought the Nikon D5200 brought some pretty nice focus speeds for a decent price, but I liked using the Canon T4 better. Does the camera body really matte much in this respect or will a great lens focus really fast regardless? I do not feel like I know enough to make this decision, I do not understand enough about what makes a DSLR able to focus quickly and I want to find the most cost effective combo to get what I am looking for. One of the Moms uses a Canon 5D Mark III with some 100-400 lens and gets amazing photos, but I am not looking to spend that much.